Run2b Silicon Electronics
description
Transcript of Run2b Silicon Electronics
Run2b Silicon Electronics
Gustavo Otero Y Garzon
University of Illinois at Chicago
December 9, 2002
Spreadsheet Status
Laser measurements
L1 module measurementsPedestal distributions
Correlation between chips
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 2
Spreadsheet
“SVX4_MS_1.9.xls” can be found in d0server4\
users\gotero\spreadsheets\good_spreadsheets\
Not entirely documented yet. The
documentation of the previous version is in:
d0server4\projects\run2b\silicon\www\smt2b\testing\
testing\html
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 3
Spreadsheet’s New Features
Flag for “new” and “old” SASeqsDMC_1300 control (laser table movement)HV motherboards controlPedestal distribution plotsCorrelation plotsExport plots as GIF filesMaster/Slave mode (simultaneous readout
of up to 6 chains)
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 4
What’s Coming…
Automatic scan of strip’s response to laser signal
Depletion voltage measurements Leakage current measurementsDMA
(Done this week?)
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 5
L1 Laser Measurements
Used SASeq’s trigger mode, RTPS and read from pipeline cell #4 to see the laser signal (in 132ns mode)
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 6
L1 Module - Laser
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 7
L1 Module - Laser (2)
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 8
L1 Module (Data Mode)
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 9
L1 Module (trig. Mode)
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 10
L1-correlation (Data Mode)
RTPS on
RTPS off
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 11
L1-correlation (Trig- Mode)
RTPS on
RTPS off
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 12
L1-pedestals (Data Mode)
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 13
L1-pedestals (Trig Mode)
12/09/02 Run2B Electronics Gustavo Otero y Garzon- UIC 14
Conclusions
Need to reduce total noise (grounding issue) Laser
Signal seen by run2b silicon detectors Possible to measure Depletion V. and Leakage C.
Pedestals of L1 module Trigger mode (no difference seen from 0V to 20V)
RTPS turn huge fluctuations to be decent Data mode
RTPS on + 20V and RTPS off + no bias looks ok RTPS off + no bias and RTPS on +20V looks bad
Correlation Pedestal fluctuations of bonded chips are totally correlated
It reduces substantially with RPTS No mayor changes with bias (20V)