Shashi Dugad
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Transcript Shashi Dugad
HO Upgrade: QC and Production
Preparation in India
Shashi Dugad
India-CMS Meeting, BARC
30 July 2010
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SiPM Control Board Status
– 2009 version of SiPM control board fabricated and
assembled in Jan 2010
• It was tested at FNAL by Sergey…. worked flawlessly.
– Order for production version has been placed with
same company in June-2010
• Pilot production PCB fabrication is in process
• Pilot production boards will be tested at FNAL/CERN
after which bulk order for fabrication for all 3 rings can
be given.
– Plan to make control boards for entire HO in India
• Quality control of all boards to be done at CRL, Ooty
Shashi Dugad, ECR Meeting,
28 July 2010
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SiPM Control Board
Fabricated in Indian company by CRL, Ooty in Jan.2010
Shashi Dugad, ECR Meeting,
28 July 2010
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Quality Control of SiPM Board
– QC testing of SiPM boards at CRL, Ooty
• Standalone DAQ
• External amplifiers (developed by Princeton) will be used for
SiPM readout (no QIE Electronics)
• 3 preamp boards required for testing were fabricated by
Princeton (Chris etal.) in April-2010. Will be read out via VME.
• Prototype test stand for QC set up.
• Team: Arjan, Rajesh, Shashi
Shashi Dugad, ECR Meeting,
28 July 2010
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Test Setup developed at CERN with Cascade-Amplifier as Front End
Team: A. Heering, B. Rajesh, Shashi
Shashi Dugad, ECR Meeting,
28 July 2010
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Results from CERN-B28 Setup
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28 July 2010
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Summary of B28 Results
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28 July 2010
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Quality Control of SiPM at CRL, Ooty
• Standalone DAQ at CERN and Ooty developed with VME
readout under Linux
• Trigger rate of > 1kHz achieved with good data integrity
• Prototype system with Princeton’s amplifier works well
(single p.e. resolution)
• This working prototype framework will be expanded to
further automate quality control of SiPM boards
Shashi Dugad, ECR Meeting,
28 July 2010
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Data Taking SETUP at CRL, Ooty
Amp Bias Monitor
I2C Box
Slow Control
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28 July 2010
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First results – Day 1
LED + Pedestal Distributions
LED
Pedestal
Tail
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28 July 2010
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Amplifier Bias voltage 9.5 ( file No 220)
1 pixel ~ 5.2 counts
1 pixel ~ 4.91 counts
Shashi Dugad, ECR Meeting,
28 July 2010
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Data taking setup
• The I2C cable shielded with Aluminum foil and the I2C box
kept away from the control card
• Amplifiers mounted on Perspex and bias connected for all 3 cards
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Summary
• Pilot production version of Control board will be
ready within a month after receiving all files (Gerbers
& assembly) from FNAL
• Production and QC of all control boards and SiPM
mounting board to be carried out at CRL, Ooty
• Good progress on the quality control setup at CRL,
Ooty
• Data taking at CRL, Ooty able to resolve single p.e.
after modifying mounting arrangement for amplifiers
Shashi Dugad, ECR Meeting,
28 July 2010
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