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DC56 R&D Goals, Schedule and Status

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Presentation on theme: "DC56 R&D Goals, Schedule and Status"— Presentation transcript:

1 DC56 R&D Goals, Schedule and Status
IhnJea Choi COMPASS DC56 Review 14/11/2012 11/14/12 IhnJea Choi

2 DC56 R&D Goals DC56 relies on well-known DC4 technology 1) Build DC56 group at ACU and UIUC and familiarize DC56 team with DC4 technology 2) Prepare wire chamber construction at UIUC and FNAL 3) Evaluate performance of DC56 front end electronics 4) Study possible improvements of DC4 technology for DC56 based on experience with DC4 in COMPASS 11/14/12 IhnJea Choi

3 DC56 R&D Goals 1) Build DC56 group at ACU and UIUC and familiarize DC56 team with DC4 technology 2) Prepare wire chamber construction at UIUC and FNAL - Build two prototypes DC56 A and B at UIUC - Acquire prototype DC4 from CEA Saclay - Setup clean room and cosmic ray test stand at UIUC - Prepare and carry out beam tests at FNAL - Learn to use wire winding machine at FNAL Lab6 - Evaluate PC-board/G10 milling facility at FNAL Lab8 11/14/12 IhnJea Choi

4 DC56 R&D Goals 3) Evaluate performance of DC56 front end electronics
- The CMAD chip test board from INFN will be tested with a) MWPC PA06 at COMPASS (Nov. 2012) (study noise level, threshold settings) - The DC56 FEE prototype from Academia Sinica(IPAS) will be tested with a) Proto. DC56-A at CERN (Dec. 2012) b) Proto. DC4 and Proto. DC56-B at FNAL ( April – June 2013 ) (study noise level, timing resolution, position resolution, efficiency using test beam and reference detectors with high position resolution) - Manpower for FEE test Cosmic ray test : UIUC DC56 FEE prototype test : INFN + Academia Sinica + CEA Saclay + UIUC Beam Test at FNAL : ACU + UIUC + Academia Sinica 11/14/12 IhnJea Choi

5 DC56 R&D Goals 4) Study possible improvements of DC4 technology for DC56 based on experience with DC4 in COMPASS a ) Strength of mechanical support for detector frames b ) Stability of graphite coating on cathode plane - Evaluate re-analysis of mechanical strength. (Dec ~ March 2013) Bartoszek Engineering and engineering from CEA Saclay - Study graphite coating procedures for cathode plane a) explore graphite coating technology from MPI Munich used in several wire chambers (P0~8, PB9,10,11 in COMPASS, E665 at FNAL and NMC+SMC at CERN) b) use for prototypes DC56-A and B (This already has started ) c) analyze chamber wires after operating for several months under radiation to test for carbon deposition and diameter of wires DC4 will be taken to CEA Saclay for anode wire replacement. (2013) UIUC staff will participate in the DC4 repair at CEA Saclay. 11/14/12 IhnJea Choi

6 DC56 R&D Schedule Milestones: R1 R2 R3 Jan Feb Mar May June July Aug
April May June July Aug Sep Oct Nov Dec 2012 asdfadsfasdfasdfasdfasdfasdfasdf 2013 Milestones: R1 Completion of prototypes DC56-A and B R2 Graphite stability test R3 Beam test at FNAL Proto. DC56-A Design & Assembly Cosmic ray test at UIUC Proto. DC56-B D&A DC56 design 1st FEM prototype R1 CMAD Chip INFN R2 Prototype DC56 – A (UIUC) Test at CERN D & A Graphite stability test DC56 construction Prototype DC56 – B (UIUC) DC56 2nd FEM prototype 1st and 2nd DCM FEE test FEE mass production DC56 FEE prototype (IPSA) Beam Test at FNAL R3 11/14/12 IhnJea Choi

7 Milestones Completion of prototypes DC56-A and B (March 2013)
Beam test at FNAL (July 2013) Graphite stability test (July 2013) 11/14/12 IhnJea Choi

8 DC56 R&D Status 11/14/12 IhnJea Choi

9 INFN FEE board for CMAD chip test
(INFN, Torino - M. Chiosso, A. Maggiora) CMAD chip test CMAD chip CMAD board + Readout board CMAD chip Tests will be carried out using COMPASS PA06 starting this week 11/14/12 IhnJea Choi

10 Lab6, Lab8 at FNAL LAB 8 CMS CSC LAB 6 LAB 8 Wire winding machine
at LAB6 in FNAL PC-board/G10 milling facility at LAB8 in FNAL Started negotiating the use of these facilities LAB 6 11/14/12 IhnJea Choi

11 Clean Room at UIUC For prototype DC56A and B assembly
Air In Air Out For prototype DC56A and B assembly -Two filtered fans keep blowing air into the clean room - Gowning area - Assembly area - Flexible plastic strip door Gowning area Assembly area Flexible plastic strip door 11/14/12 IhnJea Choi

12 Prototype DC56-A Design Prototype DC56-A
Pedro Montuenga(UIUC) Prototype DC56-A 50 cm long (2) Cathode plane (Kapton(Orange) + carbon(Black)) (3) Sense wires (20um), ~ +2kV (Luma W-Rh3%-Au plated) (4) Field wires (100um), -300V (Luma 681 W-Rh3%-Au plated) (1) Gas Window (Aluminized foil) (5) Top Al frame (7) O-ring (6) Top G10 frame (spacer) Cross section view across wires 6/16 inch (~9.5 mm) 6/16 inch (~ 9.5mm) (8) Mixed Gas : CF4 5%, C2H6 50%, Argon 45% 11/14/12 IhnJea Choi

13 Prototype DC56-A Assembly
Clean Room Gas window with Al frame Aluminized foil and frame Cathode plane with G10 spacer Assembly Graphite coating Cathode plane G10 with cathode Wires and assembly Prototype DC56-A 11/14/12 IhnJea Choi Sense/Field wire

14 Completed DC56 Prototype Assembly
Prototype DC56-A Completed DC56 Prototype Assembly Gas Leak Test - (Total volume ~8 liters) Leak rate ~ 1cc/min 8 channels connected to LEMO cables 2 HV cables for sense and field wires 100 k Ohm resistor, 1800 pF capacitance 2 wires connected each cathode plane HV Test (Current monitoring) < 1 nA at 1kV 11/14/12 IhnJea Choi

15 Prototype DC56-A vs. B Prototype DC56-A 1 Plane 50 cm long
Pedro Montuenga(UIUC) Prototype DC56-A 1 Plane 50 cm long Prototype DC56-B Pedro Montuenga(UIUC) 2 Planes 163 cm long 6/16 inch (~ 9.5mm) One anode plane, 8 wires, 50cm long 2 planes, 16 wires/plane, 163cm, shielding between planes with Al-foil 11/14/12 IhnJea Choi

16 SEM Picture of Sense Wire
Material Science Lab at UIUC (7/2012) LUMA - 25um sense wire, Gold-plated Tungsten Sense wires will be surveyed after running for several months under radiation exposure. Wire samples will be tested at Material Science at UIUC. 11/14/12 IhnJea Choi

17 GARFIELD Simulation Drift chamber layout - Ran Bi (UIUC) e/ion
Sense wire 10GeV/c muon track Field Wire Drift chamber layout Cathode plane V e/ion Drift Lines Field wire V Sense wire 0 V [cm] Sense wire located at center of the plot/ field wire 4mm apart from the sense wire Signal Shape Cathode plane V Mixed Gas : CF4 5%, C2H6 50%, Argon 45% [ns] 11/14/12 IhnJea Choi

18 Drift Velocity Drift Velocity Drift time vs. distance Y-axis X-axis
Garfield Simulation Ran Bi (UIUC) 10 GeV/c muon Drift Velocity Drift time vs. distance DC04 Alignment data from A.Magnon Y-axis Last electron X-axis All electrons 8th electron 1st electron Y-axis X-axis Drift Velocity (Vertical direction) ~ 60 um/ns Drift time vs distance (Horizontal direction) ~ 60 um/ns 11/14/12 IhnJea Choi

19 Position Resolution vs. Charge Threshold
Position resolution vs. nth electron 200um - Garfield Simulation, Ran Bi (UIUC) Arrival time distribution of 5th e Δx 5th ~ 6th e Position resol. vs. nth electron and accumulated charge RMS Δt 200um C = drift velocity Studying resolutions with changing HV and geometry 11/14/12 IhnJea Choi

20 Cosmic Ray Test with First Prototype DC56-A
11/14/12 IhnJea Choi

21 Cosmic Ray Test Stand at UIUC
We are waiting for beam tests at FNAL starting in April 2013. Meanwhile, modify cosmic ray test stand to test prototypes DC56-A and B at UIUC This cosmic ray test stand was used for RPC R&D. Limited position resolution (~2mm) Top big Scintillator (Trigger) DC4 DC0 DC1 DC2 DC3 x3 y2 x2 y1 x1 y Bottom Big Scintillator (Trigger) Small Scintillator (Trigger) proto. DC56-A Tracking position resolution (~2mm) (prototype DC56-A resolution ~ 0.2mm) Drift Chambers tor tracking muon X axis Y axis Cosmic muons projected on the area of prototype DC56-A Cosmic Ray Test Stand at UIUC Test Stand Layout 11/14/12 IhnJea Choi

22 Radiographs From cosmic ray test stand at UIUC Y x Ch0 Ch1 Ch2 Ch3
proto. DC56-A Ch0 Ch1 Ch2 Ch3 ch7 Y [cm] – across the wire ch0 Ch5 Ch4 Ch6 Ch7 X [cm] X [cm] – along the wire 11/14/12 IhnJea Choi

23 Efficiency vs. Distance from sense wire
Ch0 Ch1 Ch2 Ch3 Efficiency sense wire -0.5 cm 0.5 cm Ch5 Ch6 Efficiency Ch4 Ch7 The low efficiencies of channels 5,6 were caused by poor cable connections. Detailed measurements of efficiency vs. position resolution will be carried out with test beam at FNAL. 11/14/12 IhnJea Choi

24 Time Spectrum and Efficiency vs. HV
DC04 – x1,x2 planes from A. Magnon Proto. DC56-A TDC distribution Efficiency vs. High Voltage [kV] All channels Efficiency Counts ~75ns 1 bin = 50ps kV Distance from field to sense wire : 3/16 inch (~ 4.7mm) Drift Velocity : ~ 62um/ns (60um/ns from Garfield simulation) In absence of DC56 FEE from IPAS, we are currently limited by low gain preamp Mixed Gas : CF4 5%, C2H6 50%, Argon 45% 11/14/12 IhnJea Choi

25 Summary Presented DC56 R&D plans, schedule and status
Detailed performance evaluation of DC56 prototypes and DC56 FEE will be obtained from test beam measurements at FNAL Aim to complete R&D by July 2013 as input to preproduction review of DC56 project 11/14/12 IhnJea Choi

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