1. slide 117 th DCS Workshop – October, 10Francesca Poggio ZDC DCS Status Report Francesca Poggio Università degli Studi di Torino INFN, sezione di Torino

2. slide 217 th DCS Workshop – October, 10Francesca Poggio ZDC detectors two sets of calorimeters on both sides of the I.P. (side A, side C) –2 hadronic “spaghetti calorimeters” 1 for spectator neutrons (ZN) 1 for spectator protons (ZP) placed at 116 m from the I.P. ZP ZN a forward electromagnetic calorimeter (ZEM), placed at 7.5 m from the interaction point all ZDC are “spaghetti calorimeters” read by means of photomultipliers Beam pipes

3. slide 317 th DCS Workshop – October, 10Francesca Poggio CR4-X04/05 Detector PVSS II Ethernet Database(s) OPC client DIM client 36 High Voltage User interface PVSS II ZDC Control room (ACR) [FSM?] Crate Control VME 13/03/06 LHC Tunnel CR3 UA23/UA27 SY1527 CAEN OPCserver PVSS II OPC client E HV 22 ACC 1 CR3 PCI-CAN Wiener OPCserver PVSS II OPC client C CR4-X04/05 NIM 3 Control of the ZDCs position: ZDCs must be lowered during beam injection crucial importance  LHC interlock the system should supply, indipendently, HV to 36 channels: 5 PM/ZDC  5x4 = 20 channels (Hamamatsu R 329) 1 PM/ZEM  1x2 = 2 channels (Hamamatsu R 329) 2 reference PMs  2 channels 2 PM/ZP for calibration  2x2 = 4 channels 4 PM/ZN for calibration  4x2 = 8 channels

4. slide 417 th DCS Workshop – October, 10Francesca Poggio FSM proposal: detector oriented ZDC_DCS ZEM HV[1-2] reference calib HV[1-6] ZPZDCs HV[1-5] pos hv side A side A-C Legend CU DU LU 9 (max 9) 6 43 infra HV PS [1-2] PLC power

5. slide 517 th DCS Workshop – October, 10Francesca Poggio DCS Standard Diagram State Diagram GO_STANDBY CONFIGURE (run_mode) GO_BEAM_TUN GO_READY MOVING_BEAM_TUN MOVING_STBY_CONF MOVING_READY MOVING_BEAM_TUN CONFIGURE (run_mode) CALIBRATE GO_STBY_CONF GO_READY GO_STBY_CONF GO_BEAM_TUN CALIBRATE CONFIGURE LOCK OFF DOWNLOADING GO_OFF CONFIGURE (run_mode) GO_STANDBY CALIBRATING READY DOWNLOADING READY_LOCKED UNLOCK STBY_CONFIGUREDSTANDBY CALIBRATINGDOWNLOADING run_mode Cosmic rays Heavy ion Pp Calibration … BEAM_TUNING

6. slide 617 th DCS Workshop – October, 10Francesca Poggio Beam injection vs beam tuning all ZDCs must be lowered before the beam injection procedure starts when the ZDCs are in “safe position”, the injection can start all ZDCs must be placed back at the nominal position after the beam injection procedure has finished during the beam tuning, the ZDCs signals can be useful to optimize the tuning itself for ZDCs: beam injection  SAFE State ~ STBY_CONFIGURED beam tuning  READY State

7. slide 717 th DCS Workshop – October, 10Francesca Poggio CU ZDC_DCS State Diagram GO_STANDBY CONFIGURE (run_mode) GO_BEAM_TUN GO_READY MOVING_BEAM_TUN MOVING_STBY_CONF MOVING_READY MOVING_BEAM_TUN CONFIGURE (run_mode) CALIBRATE GO_STBY_CONF GO_READY GO_STBY_CONF GO_BEAM_TUN CALIBRATE CONFIGURE OFF DOWNLOADING GO_OFF CONFIGURE (run_mode) GO_STANDBY CALIBRATING READY DOWNLOADING STBY_CONFIGURED STANDBY BEAM_INJECTION? CALIBRATINGDOWNLOADING run_mode Cosmic rays Heavy ion Pp Calibration …

8. slide 817 th DCS Workshop – October, 10Francesca Poggio FSM proposal: detector oriented ZDC_DCS reference ZEM HV[1-2] ZPZDCs HV[1-5] calib HV[1-6] pos hv infra HV PS [1-2] side A side A-C Legend CU DU LU 9 (max 9) 6 43 PLC power

9. slide 917 th DCS Workshop – October, 10Francesca Poggio MOVING_DOWN MOVING_UP NO_CONTROL GO_NO_CONTROL GO_READY GO_STANDBY READYSTANDBY GO_STANDBY STOP GO_STANDBY STOP GO_READY ERROR RECOVER Device Unit State Diagram: position the ZDCs position is controlled with a PLC: - main circuit breaker incl. emergency stop implemented; - control part for the endswitches implemented.; - LVDT with signal conditioner implemented; - control part for closed loop control for the positioning implemented on the servo controller; -communication over profibus implemented. (August 2006, Thorsten Gallmeister) At present: 1.Thorsten Gallmeister: starting the programming of the PLC to establish the communication interface to PVSS 2.Francesca Poggio: defining the DPT structure + creating synoptic table with the PLC and PVSS variables

10. slide 1017 th DCS Workshop – October, 10Francesca Poggio Device Unit State Diagram: HV channel RAMPING_DOWN RAMPING_UP SWITCH_ON ON OFF SWITCH_OFF SWITCH_ON ERROR SWITCH_ON TRIPPED SWITCH_ON statelevel available action(s)condition ONOK (physics), GREENSWITCH_OFFactual.status=1 OFFOK (no physics), BLUESWITCH_ONactual.status=0 RAMPING_UPWARNING, YELLOWSWITCH_OFFbit0&bit1 set RAMPING_DOWNWARNING, YELLOWSWITCH_ONbit0&bit2 set TRIPPEDFATAL, REDSWITCH_ONbit8||bit9 set ERRORFATAL, REDSWITCH_ONelse actioncode SWITCH_ONsettings.onOff=1 SWITCH_OFFsettings.onOff=0

11. slide 1117 th DCS Workshop – October, 10Francesca Poggio FSM control: HV channel connection to real hardware

12. slide 1217 th DCS Workshop – October, 10Francesca Poggio FSM control

13. slide 1317 th DCS Workshop – October, 10Francesca Poggio Summary and planning installation: february 2007

14. slide 1417 th DCS Workshop – October, 10Francesca Poggio Grazie dell’attenzione! THANKS

15. slide 1517 th DCS Workshop – October, 10Francesca Poggio Backup slide!

16. slide 1617 th DCS Workshop – October, 10Francesca Poggio 2 SY1527, 2 boards A1833N per crate ZdcCrateSideA board00board01 Q1calibZN1 Q2calibZN2 Q3calibZN3 Q4calibZN4 QCcalibZP1 T1calibZP2 T2referenceA T3ZEM1 T4ZEM2 TC ZdcCrateSideC board00board01 Q1calibZN1 Q2calibZN2 Q3calibZN3 Q4calibZN4 QCcalibZP1 T1calibZP2 T2referenceC T3 T4 TC ZN ZP calibration: scintillator set to select cosmic rays  energy of the single photoelectron  energy calibration reference : ZEM laser referenceA: check the stability of the laser ZN ZP to Q1,…,QC to T1,…,TC check quarz fibers stability + PMs stability quarz fibers set