MICE Collaboration meeting at Berkeley 9 – 12 February 2005 AFC Module progress Presented by Wing Lau --with input from AFC group members

Action Who Progress made status Implement central repository for drawings -- need detector information to add to official drawing WL Basically complete. On-going liasing with Mississippi on CKOV1 drawings; with Tortora on Calorimeter etc Diffuser still to be added Hyperlink to drawing gallery is now available Done. Instrumentation for absorbers must be specified and incorporated into design (temperature sensors, liquid level sensors, …) SI Proposal now available (see Shigeru’s summary talk) and will be discussed among the AFC group as an on going action for Absorber R&D Done Define absorber heater implementation YI / SI Ditto Done Continue working to define worst-case magnet forces and collect magnet design notes into design report MG/ YI/ SY Yury and the team at RAL has now completed that work. Stephanie completed the FEA on forces and displacements. We are now homing in on the rail and anchoring design details Done Check if a 1600mm gap between AFC & Tracker matching coils WL/ UB Ullisee has completed the calculations and advised that either gap distance (800mm or 1600mm) is acceptable as far as forces and current density are concerned. However, the group has a preference to the 800mm gap. Done Revise absorber vent pipe size to make it adequate for He case WL Agreed to increase this to 15mm diameter. Drawing being updated Done Get RAL seismic design criteria and verify that designs meet them WL/ PD This is not considered significant as RAL site has relatively low floor response. A static “G” of 0.3 would be sufficient for all components with a natural frequency of above 33Hz. Comp lete. Status of Progress

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI MICE Absorber R&D will be carried out at KEK for the 1 st absorber. We are still in discussion with Shigeru on whether the thermal test of the 2 nd & 3 rd absorbers should be done at KEK or RAL. On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Action Who Progress made status Window QC – round robin exercise WLWork is on-going. On- going Understand QC requirements for absorber windows and assign oversight responsibility WL Need to discuss with the group on who is the best person to do this On going Hydrogen system R&D TB / EB Progress being made. See the previous summary talk. On -- going

Action Who Progress made status Implement central repository for drawings -- need detector information to add to official drawing WL Basically complete. On-going liasing with Mississippi on CKOV1 drawings; with Tortora on Calorimeter etc Diffuser still to be added Hyperlink to drawing gallery is now available Done. Instrumentation for absorbers must be specified and incorporated into design (temperature sensors, liquid level sensors, …) SI Proposal now available (see Shigeru’s summary talk) and will be discussed among the AFC group as an on going action for Absorber R&D Done Define absorber heater implementation YI / SI Ditto Done Continue working to define worst-case magnet forces and collect magnet design notes into design report MG/ YI/ SY Yury and the team at RAL has now completed that work. Stephanie completed the FEA on forces and displacements. We are now homing in on the rail and anchoring design details Done Check if a 1600mm gap between AFC & Tracker matching coils WL/ UB Ullisee has completed the calculations and advised that either gap distance (800mm or 1600mm) is acceptable as far as forces and current density are concerned. However, the group has a preference to the 800mm gap. Done Revise absorber vent pipe size to make it adequate for He case WL Agreed to increase this to 15mm diameter. Drawing being updated Done Get RAL seismic design criteria and verify that designs meet them WL/ PD This is not considered significant as RAL site has relatively low floor response. A static “G” of 0.3 would be sufficient for all components with a natural frequency of above 33Hz. Comp lete. Status of Progress

TOF0Chev 2TOF 1&2Magnetic Shield Detector Module Radiation Shield AFC modules 1 & 3 Coupling Modules 1 & 2 visible ☑☑☑☑☑☑☑ Comp.

Action Who Progress made status Implement central repository for drawings -- need detector information to add to official drawing WL Basically complete. On-going liasing with Mississippi on CKOV1 drawings; with Tortora on Calorimeter etc Diffuser still to be added Hyperlink to drawing gallery is now available Done. Instrumentation for absorbers must be specified and incorporated into design (temperature sensors, liquid level sensors, …) SI Proposal now available (see Shigeru’s summary talk) and will be discussed among the AFC group as an on going action for Absorber R&D Done Define absorber heater implementation YI / SI Ditto Done Continue working to define worst-case magnet forces and collect magnet design notes into design report MG / YI / SY Yury and the team at RAL has now completed that work. Stephanie completed the FEA on forces and displacements. We are now homing in on the rail and anchoring design details Done Check if a 1600mm gap between AFC & Tracker matching coils WL/ UB Ullisee has completed the calculations and advised that either gap distance (800mm or 1600mm) is acceptable as far as forces and current density are concerned. However, the group has a preference to the 800mm gap. Done Revise absorber vent pipe size to make it adequate for He case WL Agreed to increase this to 15mm diameter. Drawing being updated Done Get RAL seismic design criteria and verify that designs meet them WL/ PD This is not considered significant as RAL site has relatively low floor response. A static “G” of 0.3 would be sufficient for all components with a natural frequency of above 33Hz. Comp lete. Status of Progress

Heater/thermometer assemble for MICE absorber HTR CX-1050-SD AL. block

Thermometers in absorber AC Bridge 370S CX-1050-SD 3716; 16ch Scanner

L-H2/LHe Level sensor in absorber CX-1050-SD DC ~mA V4V4 V3V3  DC Current for L-H2/LHe should be optimized (KEK R&D). LHe LH2 

Wiring of thermometers, level sensor & heaters  4 wires measurement for thermometers and heaters  AC Bridge 370S with16ch Scanner Max. 16 CH  6 for absorber (8  6, 2 at top ) 2 for windows 2 for LH2 pipes 2 for C-He pipes 3 for Cryocooler 1 for magnet bore

PC MICE absorber monitor/control (R&D at KEK, plan) IEEE-488/RS232C Keithley 2700 READ OUTS 16 CX-1050SD’s3-HTR 5-CX-1050 P&VAC Sensors Abs. HTR-UP CRYOCOOL HTR DCPS Abs. HTR-DWN LAN Abs. LEVEL CX mA CRYOSTAT Inside Abs. DCPS cc1mA

PC / WS MICE absorber monitor/control (plan) IEEE-488 Keithley/ADCAC Bridge 370SDCPS READ OUTS 16 CX-1050SD’s DMR HTR 5-CX-1050 P&VAC&LEVEL Sensors Abs. HTR-UP CRYOCOOL HTR Programmable Controller or LOGIC DIO ALRAM, VALVES, CRYOCOOLER-OFF, HEATER-OFF… DCPS Abs. HTR-DWN LAN Abs. LEVEL CX-1050 cc 1mA DIRECT CONTROL CRYOSTAT Inside Abs. Contacts 2CH

Digital meter relay for MICE absorber/Cryocooler DMR; DIGITAL METER RELAY (Digital comparator) Watanabe (Japan) for example INPUT WSM-452HR-R3NNNX-22VD ; DC mV WSM-452HR-R3NNNX-32VD ; DC V WSM-452HR-R3NNNX-42VD ; DC V WSM-452HR-R3NNNX-52VD ; DC V OUTPUT( 4.5 digit set) HI-relay (NC, HO) LO-relay (NC, NO) Scaling; A-B (V)  C-D (Unit) DC24V

Action Who Progress made status Implement central repository for drawings -- need detector information to add to official drawing WL Basically complete. On-going liasing with Mississippi on CKOV1 drawings; with Tortora on Calorimeter etc Diffuser still to be added Hyperlink to drawing gallery is now available Done. Instrumentation for absorbers must be specified and incorporated into design (temperature sensors, liquid level sensors, …) SI Proposal now available (see Shigeru’s summary talk) and will be discussed among the AFC group as an on going action for Absorber R&D Done Define absorber heater implementation YI / SI Ditto Done Continue working to define worst-case magnet forces and collect magnet design notes into design report MG/ YI/ SY Yury and the team at RAL has now completed that work. Stephanie completed the FEA on forces and displacements. We are now homing in on the rail and anchoring design details Done Check if a 1600mm gap between AFC & Tracker matching coils WL/ UB Ullisee has completed the calculations and advised that either gap distance (800mm or 1600mm) is acceptable as far as forces and current density are concerned. However, the group has a preference to the 800mm gap. Done Revise absorber vent pipe size to make it adequate for He case WL Agreed to increase this to 15mm diameter. Drawing being updated Done Get RAL seismic design criteria and verify that designs meet them WL/ PD This is not considered significant as RAL site has relatively low floor response. A static “G” of 0.3 would be sufficient for all components with a natural frequency of above 33Hz. Comp lete. Status of Progress

Case No. Forces (MN) AFC 1RFCC 1AFC 2RFCC 2AFC Force profile received from Yury in January 2005

MICE cooling channel FEA model with the loading and boundary conditions Case 1:Forces (in MN) for Flip mode, Stage 6, p=240 MeV/c, β=42cm

Max reaction force in Y direction at the support base is N Case 1: FEA result

Super-module reaction forces

Rail – mounting concept Combined Roller Bearing

Force transfer concept - Y

Action Who Progress made status Implement central repository for drawings -- need detector information to add to official drawing WL Basically complete. On-going liasing with Mississippi on CKOV1 drawings; with Tortora on Calorimeter etc Diffuser still to be added Hyperlink to drawing gallery is now available Done. Instrumentation for absorbers must be specified and incorporated into design (temperature sensors, liquid level sensors, …) SI Proposal now available (see Shigeru’s summary talk) and will be discussed among the AFC group as an on going action for Absorber R&D Done Define absorber heater implementation YI / SI Ditto Done Continue working to define worst-case magnet forces and collect magnet design notes into design report MG/ YI/ SY Yury and the team at RAL has now completed that work. Stephanie completed the FEA on forces and displacements. We are now homing in on the rail and anchoring design details Done Check if a 1600mm gap between AFC & Tracker matching coils WL/ UB Ullisee has completed the calculations and advised that either gap distance (800mm or 1600mm) is acceptable as far as forces and current density are concerned. However, the group has a preference to the 800mm gap. Done Revise absorber vent pipe size to make it adequate for He case WL Agreed to increase this to 15mm diameter. Drawing being updated Done Get RAL seismic design criteria and verify that designs meet them WL/ PD This is not considered significant as RAL site has relatively low floor response. A static “G” of 0.3 would be sufficient for all components with a natural frequency of above 33Hz. Comp lete. Status of Progress

Ulisse Bravar 26 January 2005 This note presents the optic solutions for MICE Step III for a large number of different running conditions. Two gap distances between the two spectrometers are considered, 800 mm and 1600 mm. For the 800 mm gap, a table with forces and peak fields on coil surfaces for the worst case scenarios is attached, courtesy of H. Witte For the 1600 mm gap, all currents in the MICE coils are equal to or less than the worst case currents of the 800 mm gap. Hence, for the 1600 mm case, forces and peak fields are also lower than the ones in the 800 mm case. In conclusion, currents, peak fields and forces both in the 800 mm and in the 1600 mm gaps are within tolerances.

Action Who Progress made status Implement central repository for drawings -- need detector information to add to official drawing WL Basically complete. On-going liasing with Mississippi on CKOV1 drawings; with Tortora on Calorimeter etc Diffuser still to be added Hyperlink to drawing gallery is now available Done. Instrumentation for absorbers must be specified and incorporated into design (temperature sensors, liquid level sensors, …) SI Proposal now available (see Shigeru’s summary talk) and will be discussed among the AFC group as an on going action for Absorber R&D Done Define absorber heater implementation YI / SI Ditto Done Continue working to define worst-case magnet forces and collect magnet design notes into design report MG/ YI/ SY Yury and the team at RAL has now completed that work. Stephanie completed the FEA on forces and displacements. We are now homing in on the rail and anchoring design details Done Check if a 1600mm gap between AFC & Tracker matching coils WL/ UB Ullisee has completed the calculations and advised that either gap distance (800mm or 1600mm) is acceptable as far as forces and current density are concerned. However, the group has a preference to the 800mm gap. Done Revise absorber vent pipe size to make it adequate for He case WL Agreed to increase this to 15mm diameter. Drawing being updated Done Get RAL seismic design criteria and verify that designs meet them WL/ PD This is not considered significant as RAL site has relatively low floor response. A static “G” of 0.3 would be sufficient for all components with a natural frequency of above 33Hz. Comp lete. Status of Progress

Action Who Progress made status Implement central repository for drawings -- need detector information to add to official drawing WL Basically complete. On-going liasing with Mississippi on CKOV1 drawings; with Tortora on Calorimeter etc Diffuser still to be added Hyperlink to drawing gallery is now available Done. Instrumentation for absorbers must be specified and incorporated into design (temperature sensors, liquid level sensors, …) SI Proposal now available (see Shigeru’s summary talk) and will be discussed among the AFC group as an on going action for Absorber R&D Done Define absorber heater implementation YI / SI Ditto Done Continue working to define worst-case magnet forces and collect magnet design notes into design report MG/ YI/ SY Yury and the team at RAL has now completed that work. Stephanie completed the FEA on forces and displacements. We are now homing in on the rail and anchoring design details Done Check if a 1600mm gap between AFC & Tracker matching coils WL/ UB Ullisee has completed the calculations and advised that either gap distance (800mm or 1600mm) is acceptable as far as forces and current density are concerned. However, the group has a preference to the 800mm gap. Done Revise absorber vent pipe size to make it adequate for He case WL Agreed to increase this to 15mm diameter. Drawing being updated Done Get RAL seismic design criteria and verify that designs meet them WL/ PD This is not considered significant as RAL site has relatively low floor response. A static “G” of 0.3 would be sufficient for all components with a natural frequency of above 33Hz. Comp lete. Status of Progress

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI MICE Absorber R&D will be carried out at KEK for the 1 st absorber. We are still in discussion with Shigeru on whether the thermal test of the 2 nd & 3 rd absorbers should be done at KEK or RAL. On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI MICE Absorber R&D will be carried out at KEK for the 1 st absorber. We are still in discussion with Shigeru on whether the thermal test of the 2 nd & 3 rd absorbers should be done at KEK or RAL. On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI MICE Absorber R&D will be carried out at KEK for the 1 st absorber. We are still in discussion with Shigeru on whether the thermal test of the 2 nd & 3 rd absorbers should be done at KEK or RAL. On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI MICE Absorber R&D will be carried out at KEK for the 1 st absorber. We are still in discussion with Shigeru on whether the thermal test of the 2 nd & 3 rd absorbers should be done at KEK or RAL. On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Hydrogen System Baseline layout Pressure gauge Non-return valve - PP VP Vacuum pump Bursting disk Pressure relief valve Valve Pressure Coolant Out In Metal Hydride storage unit (20m 3 capacity) Purge valve 0.5 bar 0.9 bar H 2 Detector P P VP1 VP2 Purge valve Chiller/He ater Unit 1 bar P P 0.5 bar 0.9 bar Helium supply Hydrogen supply High level vent Buffer vessel Vent outside flame arrester Extract hood H 2 Detector P P Nitrogen supply P P P P 1 m 3 Hydrogen zone 2 Vent manifold P1 PV1 PV7 PV8 PV2 PV3 PV4 HV1 Fill valve Tbed HV2 HV3 P3 P P2 PV6 High level vent Non return valve 0.1 bar - PP VP Vacuum pump Bursting disk Pressure relief valve Valve Pressure regulator Coolant Out In Absorber window Metal Hydride storage unit (20m 3 capacity) Purge valve 0.5 bar 0.9 bar H 2 DetectorH 2 P P VP1 VP2 Purge valve Chiller/He ater Unit 1 bar P P 0.5 bar 0.9 bar Helium supply Hydrogen supply High level vent Buffer vessel Vent outside flame arrester Extract hood H 2 DetectorH 2 P P Nitrogen supply P P P P 1 m 3 Hydrogen zone 2 Vent manifold P1 PV1 PV7 PV8 PV2 PV3 PV4 HV1 Fill valve Tbed HV2 HV3 P3 P P2 PV6 High level vent Non return valve 0.1 bar Safety window

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI MICE Absorber R&D will be carried out at KEK for the 1 st absorber. We are still in discussion with Shigeru on whether the thermal test of the 2 nd & 3 rd absorbers should be done at KEK or RAL. On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI MICE Absorber R&D will be carried out at KEK for the 1 st absorber. We are still in discussion with Shigeru on whether the thermal test of the 2 nd & 3 rd absorbers should be done at KEK or RAL. On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Model

Absorber thermal model

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI MICE Absorber R&D will be carried out at KEK for the 1 st absorber. We are still in discussion with Shigeru on whether the thermal test of the 2 nd & 3 rd absorbers should be done at KEK or RAL. On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Case No.Max stress MPa Max displacement mm Max horizontal reaction force N Max vertical reaction force N FEA result summary

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI Detail arrangement is still being worked out between KEK & RAL On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Absorber test cryostat ATC-002 (dimensions) MICE (needs larger Cryocooler flange for pips) D2; Cryocooler flange W W H2 H1 D1

July 05 Oct 05 Jan 06 Apr 06 July 06 Oct 06 Jan 07 Apr 07 Phase 1 deliverable fully installed & tested Thermal performance test on 1 st absorber (KEK) Thermal performance test on 2 nd absorber Thermal performance test on 3 rd absorber Absorber R & D Initial design Detailed design & procurement Installation & commissioning Test programme Prelim. D & S review Hydrogen system R&D KEK test cryostat comes to RAL Permission to operate

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI MICE Absorber R&D will be carried out at KEK for the 1 st absorber. We are still in discussion with Shigeru on whether the thermal test of the 2 nd & 3 rd absorbers should be done at KEK or RAL. On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Lab G Solenoid Power Supply and Quench Protection

The MICE Coupling Coil Power Supply with Quench Protection

Note: The coil is shown split into two parts. The coil may be split into three or four parts instead of two parts.

Detector Magnet Power Supplies Match 1 Match 2End 1CenterEnd 2

Concluding Comments on Quenches The focusing and coupling magnets will have passive quench protection. The detector magnet will likely have an active quench protection system. The three focusing magnets should be in series. Each coupling magnet should have its own power supply to reduce the charge time. Like detector magnet coils can be put in series. A coupling coil quench will quench the rest of MICE. A focus coil quench will not quench a coupling coil.

Action Who Progress made status Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate merits of cryocooler heater vs. 3-stage cooler w/o heater MG Concluded that this is no longer an option for our current design Done Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Finalize interface between radiation shield and detector module - must forces be transmitted WL Stephanie has done the calc. Forces and displacement s at modules are acceptable for the 7 cases being considered. Done Consider participation in KEK and/or Fermilab absorber tests (some coordination maybe called for) YI / SI MICE Absorber R&D will be carried out at KEK for the 1 st absorber. We are still in discussion with Shigeru on whether the thermal test of the 2 nd & 3 rd absorbers should be done at KEK or RAL. On- going Evaluate magnet interaction during quench -- does one quench induce others EB / MG Work is by and large complete. It shows that the 3 focus coils should be powered in series. The 2 Coupling Coils could be powered up either in series or separately. Done Raise Change note on the radiation shield design SY / WL Done

Action Who Progress made status Window QC – round robin exercise WLWork is on-going. On- going Understand QC requirements for absorber windows and assign oversight responsibility WL Need to discuss with the group on who is the best person to do this On going Hydrogen system R&D TB / EB Progress being made. See the previous summary talk. On -- going

Task Description An AFC Module window that was damaged during machining was used to test a non-contact measurement method. A standard CMM was also used for comparison. All measurements were made on both sides of the window with the thickness being determined indirectly from the two sets of data. Measurements consisted of 12 radial slices at 15º increments. The center 80 mm of the window is damaged. Measurement Methods Standard CMM with low contact force Vision machine with medium magnification lens Vision machine with high magnification (not yet complete) Summary of Results Best data obtained from CMM measurement Vision machine data shows more scatter Good portion of window is within 40  m of design thickness

Standard CMM MeasurementVision Machine Measurement

Discussion The vision machine works best when measuring horizontal, smooth surfaces The combination of a sloped surface and machining grooves in the window is likely responsible for the data scatter Preliminary results indicate that the higher magnification lens may provide better results than the medium lens Overall, the best results are achieved using contact CMM The following method would provide the highest accuracy:  Contact CMM using a low-force tip and appropriate approach angle resulting in no window deflection  The window mounted vertically to allow a single set-up

Action Who Progress made status Window QC – round robin exercise WLWork is on-going. On- going Understand QC requirements for absorber windows and assign oversight responsibility WL Need to discuss with the group on who is the best person to do this On going Hydrogen system R&D TB / EB Progress being made. See the previous summary talk. On -- going

Action Who Progress made status Window QC – round robin exercise WLWork is on-going. On- going Understand QC requirements for absorber windows and assign oversight responsibility WL Need to discuss with the group on who is the best person to do this On going Hydrogen system R&D TB / EB Progress being made. See the previous summary talk. On -- going

Action Who Progress made status Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Window QC – round robin exercise WLWork is on-going. On- going Understand QC requirements for absorber windows and assign oversight responsibility WL Need to discuss with the group on who is the best person to do this On going Hydrogen system R&D TB / EB Progress being made. See the previous summary talk. On -- going Revised Action list

Action Who Progress made status Evaluate the need for redundant LH2 relief paths EB / TB This is part of the on-going R&D activity on the Hydrogen System R&D. On- going Evaluate absorber heat load with more realistic assessment of surrounding temperatures (is proposed MLI adequate?) EB/ MG/ SY Thermal model set up. Elwyn and his team are making progress on this On- going Evaluate stresses at module interconnect flanges and bolts SV Steve Verostek had done detail FEA on bolt / flange connection and the work is still on- going On- going Define RFCC module tie-in to rail system SV This is now in he hands on the RAL design team On- going Work out gusset arrangement to transfer CC forces to RFCC module vacuum shell. SV Await Mike Green to finalise the Cold Mass support arrangement before deciding on how and where to put these gussets On- going Window QC – round robin exercise WLWork is on-going. On- going Understand QC requirements for absorber windows and assign oversight responsibility WL Need to discuss with the group on who is the best person to do this On going Hydrogen system R&D TB / EB Progress being made. See the previous summary talk. On -- going Obtain magnet force on AFC module during Stage IV test when only one AFC module is placed between the two detector solenoids EB / SY Initial guess is that the force is in the region of 30 tons. Force calculation will be carried out to verify this number. A new temporary bridging plate will be designed for the Stage IV test New action Revised Action list

Stage IV arrangement – 2 tracker solenoids + 1 AFC module in between

Magnet force of approx. 30 Tons due to asymmetric quench of magnets Magnet force of this magnitude may cause excessive bending here

Temporary bridging piece Reinforcement gussets