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[Sphenix-electronics-l] sPHENIX poster abstract for Balazs Ujvari

From: Gabor David <david AT bnl.gov>
To: sphenix-electronics-l AT lists.bnl.gov
Cc: Ujvari Balazs <ujvarib AT gmail.com>
Subject: [Sphenix-electronics-l] sPHENIX poster abstract for Balazs Ujvari
Date: Tue, 25 Jun 2019 23:31:00 -0400 (EDT)

Hi,

I'm posting this proposed poster abstract on behalf of
Balazs Ujvari; I also added it to

https://paper.dropbox.com/doc/sPHENIX-QM-2019-contributions--AfwW8Jl6Y0Coz9h5_VorXSp3Ag-98IMEFhjHiQURsoBPMqoe

Gabor

Title: Testing the SiPMs for the sPHENIX electromagnetic and hadronic calorimeters

Possible presenter: Balazs Ujvari

Abstract: The electromagnetic (EMCal) and hadronic (HCal) calorimeters for the sPHENIX experiment will use about 100,000 Silicon Photo-Multipliers (SiPMs) as optical sensors (Hamamatsu S12572-33-015P). The effects of radiation damage in SiPMs from gamma rays has been measured and compared with the damage produced by neutrons. We designed and constructed an automated SiPM testing device that measures the breakdown voltage and gain curve with the IV scan and SPS (single photon spectrum) method. It is used to characterize the SiPMs for the sPHENIX calorimeters and prepare a database for SiPM sorting. We will report on the first few months of operational experience, including precision, stability and reproducibility of the measurements, consistency with the available factory data, and the projected effect
of the SiPMs on the overall calorimeter performance in sPHENIX.

[Sphenix-electronics-l] sPHENIX poster abstract for Balazs Ujvari, Gabor David, 06/25/2019