SiD Stripscintillator Muon System R

1
SiD Strip-scintillator Muon System RD and Cost
Estimate

• R. Abrams, R. Van Kooten
• Indiana University
• M. Wayne, M. McKenna, A. Roberts
• University of Notre Dame
• P. Karchin, A. Gutierrez
• Wayne State University
• G. Fisk, C. Milstene, E. Ramberg
• Fermilab

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Outline

• MTest Setup
• Status of Tests
• ADC Calibration
• Pulse height Spectra/Min-I Response
• First data with Italian SiPM
• Scintillator Muon System Cost Estimate

3
Current Status of Testing

• Four (1.25m X 2.5m) prototype modules with 64
  strips built at Notre Dame in 2005.
• Planes set up in Fermilab MTest beam (aka MTBF).
• Test run in February with very preliminary
  results at LCWS06 in Bangalore in March 2006.
• Running resumed from end of June to mid-July and
  then from mid-August through mid-September.
• Many problems, mostly DAQ-related, were solved
  and good data were obtained on pulse height vs.
  position.

MTest is off for modifications will return to
an operational state in 2007.
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Muon Detector Setup
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Monitoring and Positioning
Video monitor and Motor controls for remote
adjustment of the carts position.
96 inch horizontal motion along rail, Hydraulic
scissors jack cart has 45 inch vertical travel.
Beam position is established on the detector
planes with horizontal and vertical laser levels.
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Single Module Layout
Clear fibers to cookie (S Readout Side)
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Cookie
Prototype S Strips at 45º
S
43
22
MAPMT
64
Clear fibers to cookie (S- Readout Side)
Prototype S- Strips at -45º
S-
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Layout of Dual Readout Modules

Clear fibers to cookie (Da Readout Side)
Da
Fibers to Da
Db Fibers
Prototype D Strips at 45º. Fibers from far End
go to Db
MAPMT
Cookie
Db
Clear fibers to cookie (Db Readout Side)
Clear fibers to cookie (D-b Readout Side)
D-b
Fibers to D-a
D-b Fibers
Prototype D- Strips at -45º. Fibers from far End
go to D-b
D-a
Clear fibers to cookie (D-a Readout Side)
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MAPMT Beam Pulse
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Schematic Measurement Grid
Horizontal Scribed Lines
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-30
-46
-58
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-14
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Circles show points that were measured. Numbers
indicate strip numbers
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Calibration of ADCs

• Pulser to 12X fanout to 12 ADCs at a time.
• Record pulses on digital scope and Integrate to
  get charge.
• Bypass the 10X amplifiers used in beam tests to
  stay within ADC ranges.
• Measure response of the ADCs.
• Calibrate with 3 different sized pulses.
• Compare to LeCroy spec 0.25 pC/chan

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Pulses and ADC Calibrations
2.77 e-09 V-sec Q 55.4 pC
7.25 e-09 V-sec Q 145 pC
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ADC Calibration
107.2 e-10 V-s Q214 pC
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Measurements

• Position detector so that beam hits particular
  (, -) pairs of counters.
• Measure
• multiple strips with beam at center or comparable
  points
• at different positions along strips.
• near boundaries between strips
• Also record coincidence rates of each signal with
  beam with CAMAC scalers.

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Pulse Height Spectrum
Mean 219.7 channels RMS 193.8 channels Ped
18.7 channels Calib .255pC/ch Ped subtracted
Mean charge 5.12pC
Strip 38 Center S- ADC channel
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Schematic Measurement Grid
Horizontal Scribed Lines
-26
-30
-46
-58
-34
-38
-42
-50
-54
-22
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-18
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-6
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Circles show points that were measured. Numbers
indicate strip numbers
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Scans along strips
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Italian SiPM Beam Test
Bias -36V Mean 304 s 180.5
A. Driutti and G. Pauletta INFN
Trieste/Udine INFN/Udine test of ITC-Irst SiPMs
at SiDet using prototype LC muon scintillator
plus WLS fiber. MTest data Sept 2006. 25 x 25
pixels with each pixel 40m X 40m Gain 1.6 x
107 Noise 0.7 MHz http//sipm.itc.it
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Conclusions

• Collected good sets of test beam data.
• Data collection rate limited to 40/sec by
  CAMAC/DAQ. Requires 1-2 hours per 12000 events.
• Plan to replace aging CAMAC system.
• Additional running is planned with Minerva
  electronics statistics from all strips?
• Useful information is being derived from our data.

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Backup Slides
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