1 HO Upgrade: QC and Production Preparation in India Shashi Dugad India-CMS Meeting, BARC 30 July 2010

Shashi Dugad, ECR Meeting, 28 July –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 SiPM Control Board Fabricated in Indian company by CRL, Ooty in Jan.2010

Shashi Dugad, ECR Meeting, 28 July 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 Will be read out via VME. Prototype test stand for QC set up. Team: Arjan, Rajesh, Shashi

Shashi Dugad, ECR Meeting, 28 July Test Setup developed at CERN with Cascade-Amplifier as Front End Team: A. Heering, B. Rajesh, Shashi

Shashi Dugad, ECR Meeting, 28 July Results from CERN-B28 Setup

Shashi Dugad, ECR Meeting, 28 July Summary of B28 Results

Shashi Dugad, ECR Meeting, 28 July 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 I2C Box Slow Control Amp Bias Monitor Data Taking SETUP at CRL, Ooty 9

Shashi Dugad, ECR Meeting, 28 July First results – Day 1 LED + Pedestal Distributions Pedestal LED Tail 10

Shashi Dugad, ECR Meeting, 28 July 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 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