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HO Upgrade: QC and Production Preparation in India

Shashi Dugad

India-CMS Meeting, BARC

30 July 2010

Shashi Dugad, ECR Meeting, 28 July 2010

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– 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

SiPM Control Board Status

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

Shashi Dugad, ECR Meeting, 28 July 2010

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Summary of B28 Results

Shashi Dugad, ECR Meeting, 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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I2C Box

Slow Control

Amp Bias Monitor

Data Taking SETUP at CRL, Ooty

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Shashi Dugad, ECR Meeting, 28 July 2010

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First results – Day 1LED + Pedestal Distributions

Pedestal

LED

Tail

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Shashi Dugad, ECR Meeting, 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

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• 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

Data taking setup

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Shashi Dugad, ECR Meeting, 28 July 2010

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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

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