Date post: | 03-Jan-2016 |
Category: |
Documents |
Upload: | dorcas-reynolds |
View: | 215 times |
Download: | 0 times |
1
HO Upgrade: QC and Production Preparation in India
Shashi Dugad
India-CMS Meeting, BARC
30 July 2010
Shashi Dugad, ECR Meeting, 28 July 2010
22
– 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
3
SiPM Control Board
Fabricated in Indian company by CRL, Ooty in Jan.2010
Shashi Dugad, ECR Meeting, 28 July 2010
4
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
5
Test Setup developed at CERN with Cascade-Amplifier as Front End
Team: A. Heering, B. Rajesh, Shashi
Shashi Dugad, ECR Meeting, 28 July 2010
8
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
9
I2C Box
Slow Control
Amp Bias Monitor
Data Taking SETUP at CRL, Ooty
9
Shashi Dugad, ECR Meeting, 28 July 2010
10
First results – Day 1LED + Pedestal Distributions
Pedestal
LED
Tail
10
Shashi Dugad, ECR Meeting, 28 July 2010
1111
Amplifier Bias voltage 9.5 ( file No 220)
1 pixel ~ 5.2 counts
1 pixel ~ 4.91 counts
11
• 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
12
Shashi Dugad, ECR Meeting, 28 July 2010
13
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
13