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Muon Tracking FEE R.E. Mischke Los Alamos 10 September, 1999 presentation to the PHENIX Muon Arm Technical Advisory Committee.

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Presentation on theme: "Muon Tracking FEE R.E. Mischke Los Alamos 10 September, 1999 presentation to the PHENIX Muon Arm Technical Advisory Committee."— Presentation transcript:

1 Muon Tracking FEE R.E. Mischke Los Alamos 10 September, 1999 presentation to the PHENIX Muon Arm Technical Advisory Committee

2 Outline Scope of Project Status Results from CROC prototype Schedule Production cost Summary

3 Scope of Project Electronics tracking chambers to Phenix interface Associated Mechanical Structures Power and Grounding Ancillary Systems Installation Calibration


5 Chamber cathodes 8 CPA 2 AMUADC CROC FPGA ARCnet 24” cable CNTL Clink Glink DCM T&FC System components

6 Mechanics Status and Schedule In-magnet mechanics design and review complete fabrication in process (AMC at NMSU) deliveries on 1 Jan and 1 May, 2000 Platform design underway (B. Archuleta, J. Archuleta) installation in Feb, 2000 Cable routing preliminary design complete





11 FEE Design Spec Want 100 micron position resolution from 0.5 cm cathode strips read out at 1 cm input cap 0 - 150 pF; typical charge 80 fC noise requirement of 0.7% or 0.5fC (3125 e) dynamic range 11 bits (0.8fC to 800fC) gain: 3.5 mV/fC typical spacing of pulses is 100 m s pulse rise time 500 ns decay time less than 12 m s four samples per pulse reasonable power-up defaults; calibration control

12 CPA Status Reviewed in Dec 98 - Several Issues Additional measurements in Jan 99 power supply sensitivity, linearity, channel to channel gain variations, recovery from overload, cross talk, dynamic range Modifications fix serial out, change default offset DAC Final review Apr 99 Production order Jul 99 Delivery Oct 99

13 CROC Status Prototype board is being extensively tested repaired prototype CPA chips are used power-up defaults are unsatisfactory load serial strings via CPA test stand analog sections can be studied without CNTL board mounted in chassis with backplane test chamber and 24” cable used as a load and to inject signals








21 Results Gain: 2.5V/764mV/1pF = 3.3 mV/fC typical noise values for 64 CPA channels 0.6mV RMS (no load) 2 mV RMS (with test chamber) setup not optimal - additional testing planned no HV, jumper wires, temporary grounds, incomplete shielding, small scale, no digital Anode pulse - 1.3 V out/ 7.3 V in BLR (base line restore) concerns

22 CNTL and Glink Status CNTL board prototype almost assembled initial FPGA code written Glink/Clink design in layout cable tests underway soon



25 Status of Other Items Everything Else (non-critical items postponed for now) LV power Arcnet T&FC and DCM connections Ancillary systems Calibration pulsing of anodes has been shown to work system design just beginning

26 Milestones

27 Staff

28 Agreement with NIS4 will continue with present design of electronics through prototyping will support mechanical design as resources permit will not oversee electronics production, but will be available for consultation expect to complete work by 31 October

29 Schedule I CPA chips production chips expected first chips will be tested in Los Alamos remaining chips will be tested at BNL (Chi) CPA test stands (two from ORNL) modify for production (McGaughey) Stand alone ARCnet existing capability to inject serial strings (Hoover) implement for prototypes via spare CNTL (Liu) 31 Oct 5 Nov Jan, 00 15 Oct 1 Oct

30 Schedule II CROC board complete testing of analog portion (Cafferty) test digital part (awaits CNTL board) order corrected prototype board final tests with production CPA chips CNTL board (Robinson, Thornton) initial checkout and loopback tests communication with AMUADC T&FC and DCM links 15 Sep 10 Oct 1 Nov 10 Nov 15 Sep 10 Oct 20 Oct

31 Schedule III FEM review target date is early November chain test with production chips is prerequisite including data with real signals from test chamber Production of CROC and CNTL boards early parts orders in preparation (Hart) place most orders if funds available allow 3 1/2 months for board production 10 Nov 15 Sep 15 Nov Mar, 00

32 Schedule IV Board test stands Develop design (Liu) Assemble at LANL for use with prototypes Ready for production testing at BNL (Liu, Hoover, +) Calibration Begin detailed design (Leitch) Available for system checkout 1 Oct 1 Nov Mar, 00 1 Oct Jun, 00

33 Schedule V Glink/Clink (Echave, S. Archuleta) complete cable tests prototype boards packaging and location Power complete specs (Hart) Slow Controls (Hoover) Ancillary Systems (Pate) 30 Sep 31 Oct 30 Nov 1 Oct Feb, 00

34 Schedule VI Assembly and Installation (Sondheim) detailed plans need to be developed test and assembly at BNL Milestone targets look reasonable 1 Mar boards available 14 Apr install 1st CRA 11 Jul install last CRA 1 Nov Mar, 00 (Cross rib assembly)

35 Production Costs

36 Summary Performance of analog portion of prototype encouraging design specs have been met (with caveats) No show-stoppers expected with digital portions Most areas of project are being addressed Schedule is aggressive, but not unreasonable Production cost estimate conservative

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