Aachen – III B Thomas Hermanns CMS Week December 07th 2004
Results on 198 TEC-Modules
Module Test Meeting CMS Week
07th December 2004
G. Flügge, T. Franke, Th. Hermanns,J. Mnich, O. Pooth, M. Pöttgens
III. Physikalisches Institut BRWTH Aachen
Aachen – III B Thomas Hermanns CMS Week December 07th 2004
Overview
in total since July 2004:253 modules ARC-tested215 modules LT-tested
presentation of some results of 198 modulesdata of normal modulesdata of repaired modules(e.g. modules pitch-adapter–sensor overlap)
no data of current repair centre modules
some results on LT-test
Aachen – III B Thomas Hermanns CMS Week December 07th 2004
Summary of the results
total: 0.73 % bad channels
abs. % abs. % abs. % abs. % abs. % abs. % abs. % abs. % abs. % abs. %total per problem
opens 0 0,00 2 0,01 4 0,09 2 0,03 2 0,03 4 0,03 69 0,27 2 0,05 85shorts 11 0,05 0 0,00 0 0,00 0 0,00 0 0,00 0 0,00 2 0,01 7 0,17 20
pinholes 0 0,00 0 0,00 0 0,00 0 0,00 0 0,00 0 0,00 4 0,02 13 0,32 17saturated 9 0,04 10 0,03 0 0,00 0 0,00 0 0,00 2 0,01 0 0,00 0 0,00 21
noisy 58 0,27 205 0,51 1 0,02 5 0,08 23 0,30 383 2,41 73 0,29 14 0,34 762unidentified 0 0,00 1 0,00 1 0,02 0 0,00 0 0,00 1 0,01 3 0,01 7 0,17 13total per type 78 0,36 218 0,55 6 0,13 7 0,11 25 0,33 390 2,46 151 0,59 43 1,05
0
NO DATA NO DATA
Ring 68
Ring 5s Ring 7500
Ring 3 Ring 4 Ring 5nRing 2n Ring 2s15 316 8
Ring 1n Ring 1s28 52
Grade A 158Grade B 26Grade C 14
800
Ring 2n28 52 6
Ring 2s Ring 3 Ring 4 Ring 5n Ring 5s Ring 6 Ring 7 total0 50 88 15 31 0
2
600
473
Ring 1n Ring 1s
2710
620
1500
71212
NO DATA NO DATA4280
Grading:
aspects to discuss: - noisy channels at Ring 4- Ring 6 modules
evaluation with cuts defined in ..._testsettings0.2.xml+ pinhole-max-cut = 10 (identification of saturated channels)
Aachen – III B Thomas Hermanns CMS Week December 07th 2004
Number of Faults per Module
modules with 4 APVs? noisy Ring 4 data? ST-Sensors
modules with 6 APVs? good quality
A B
A B
Aachen – III B Thomas Hermanns CMS Week December 07th 2004
Details on Noisy Channels
no correlation between data and testboxesno low baseline (tests with VPSP=35)
Ring 4 modules:slight modification of noise cut by 0.05 ADC counts (old values in parentheses)
? reduction of noisy channels to 134 (383)? 119 of them are APV-edge channels
(additionally: 9 neighbouring the APV-edge channels)
re-gradingA: 21 (7), B: 10 (12), C: 0 (12)
twotestboxes
Aachen – III B Thomas Hermanns CMS Week December 07th 2004
Ring 6 CM-Subtracted Noise
36 HPK-modules14 ST-modules
HPK: mainly noisy channels ? modification of noise cutST: mainly opens (unbonded pinholes)
mean leakage current at 450 V: 0.6 ± 0.1µA , 1.9 ± 0.7µA
Aachen – III B Thomas Hermanns CMS Week December 07th 2004
Longterm-Tests
10 modules per LT-TestLT-Test = 10 Cycles between 15°C and –20°Cregulation-software ACDCTCP/IP to ARCS
sequentially read out by ARCS (15°C, 3?-20°C, 15°C)
193 of 198 modules LT-tested (including modules with PA-sensor overlap)
Aachen – III B Thomas Hermanns CMS Week December 07th 2004
Cold Box Noise Performance(Ring 6 data)
comparison: testbox and cold box at room temperature
testboxcold box
comparison:cold box at 15°C and –20°C
cold box at 15°Ccold box at –20°C
Aachen – III B Thomas Hermanns CMS Week December 07th 2004
Longterm-Tests II
comparison between CM Subtracted Noise, Peak Time and Gain Slope before and after cooling (module-evaluation related quantities)
example of a prepared modulePeakInvOn: Difference CM Subtracted Noise PeakInvOn: Difference Peak Time
En
trie
s
En
trie
s
Difference Peak Time [ns]Difference CM Subtracted Noise [FADC counts]
Separation of opensSeparation of opens
by type
NO LT-TEST INDUCED DEFECTS DETECTED!
Aachen – III B Thomas Hermanns CMS Week December 07th 2004
Plans for X-Mas and New Year
send LT-data to DB (creation by defect analyser)
further LT-Tests of modules that are re-set valid by repair centre
Very LT-test of 10 modulestime: some weeks, constant temperature: -15°CHV and LV permanently switched onmonitor leakage currents, noise behaviour,...(some software modifications to be done)
our proposal:10 modules of good quality2nd VLT-Test with modules showing problems(mainly modules with suspicious hybrids)