 Sat Feb 8 20:48:11 2020, Dinko Ferencek, Full test, FT for 4 modules: 1550, 1551, 1552, 1553 
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1550: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs. IV: 0.45 uA at +10 C, slope 1.09
1551: C/C/C (-20/-20/+10). Mean noise >200e for some ROCs, dead trimbits in ROC 13, but trimmed Vcal threshold distribution and distribution of trim bits look OK. IV: 0.33 uA at +10 C, slope 1.09
==> Manually regraded to B
1552: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs. IV: 0.23 uA at +10 C, slope 1.10
1553: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs, double-column readout problem in ROC 11 (see attached plot). IV: 0.41 uA at +10 C, slope 1.70
Chiller operational procedures:
Chiller temperature set and kept at 3.5 C throughout the entire test. This was done after observing that during tests at +10 C and with the chiller left at +3.5 C, the Peltiers were mostly inactive and there was no excessive heating occurring. This seems to suggest that the coolant temperature at +3.5 C is a good balance against the ambient temperature and heat produced by working modules to keep the temperature at +10 C. The temperature history plot is attached. |
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Fri Feb 7 20:35:44 2020, Dinko Ferencek, Full test, FT for 4 modules: 1545, 1547, 1548, 1549
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1545: C/C/C (-20/-20/+10). Problematic ROC 14: mean noise >320e, many dead trimbits, wide trimmed Vcal threshold distribution. IV: 0.20 uA at +10 C, slope 1.09
1547: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs. IV: 0.41 uA at +10 C, slope 1.08
1548: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs. IV: 0.13 uA at +10 C, slope 1.10
1549: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs. IV: 0.33 uA at +10 C, slope 1.12
Chiller operational procedures:
Chiller temperature was initially set to 4 C and the coldbox was able to reach -19.7 C which is within the require 0.5 C margin and the Fulltest could start. About 1 hours into the Fulltest, it was observed that the coldbox temperature rose to 19.0 C. At that point the chiller temperature was lowered to 3.5 C and the coldbox was able to lower and keep the temperature in the -19.2 to -19.3 C range. Once the test at -20 C were done, for the Fulltest and IV at +10 C the chiller temperature was initially raised to +11 C and after about one hour (midway through the Fulltest), it was lowered to +10 C because at one point the coolant temperature rose to +13 C. The temperature history plot is attached. |
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Fri Feb 7 19:40:27 2020, Dinko Ferencek, Reception test, RT for 6 modules: 1557, 1558, 1559, 1560, 1561, 1562
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Reception test is done and all 6 modules were graded A.
Protective caps were glued to 4 modules: 1557, 1558, 1559, 1560 |
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Thu Feb 6 00:45:25 2020, Dinko Ferencek, Cold box tests, Lost at least one Peltier in the coldbox
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During an overnight (Feb. 4-5) FullQualification run with modules 1545, 1547, 1548, and 1549 the coldbox lost the ability to maintain the temperature at -20 C. As can be seen from the attached temperature log, the problems already started during the temperature cycles where the last 2 cycles were noticeably longer than the first 3 and finally during the second Fulltests at -20 C the temperature started rising and stabilized around -10 C. Based on these observations it looked like at least one Peltier stopped working.
Silvan took apart the coldbox and will install new Peltiers. Based on measurements Andrey did with the old Peltiers it indeed looks like one Peltier stopped working but the remaining 3 also appear to be at different stages of degradation. |
 Thu Feb 6 17:28:23 2020, Dinko Ferencek, Cold box tests, New Peltiers installed
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Today new Peltiers were installed and tested. Unfortunately, we had trouble reaching -20 C with this new set of Peltiers (they are of different type than the ones that were taken out). After better insulation ofthe sample compartment and lowering the chiller temperature from 11 to 6 C, the coldbox was able to reach close to -19.8 C after about half an hour
After lowering the chiller temperature to 5 C, the coldbox was able to reach -20 C
and hold it for about 1 hour when the test was stopped
The plan is to order a new set of Peltiers that are better suited for our use case and in the meantime we will use the newly installed ones with the chiller temperature set lower.
IMPORTANT: Pipes inside the coldbox were left uninsulated. For now this is OK because of the low relative humidity in winter months but could lead to condensation in warmer part of the year when the relative humidity increases. |
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Thu Feb 6 17:19:12 2020, Dinko Ferencek, Reception test, RT for 6 modules: 1551, 1552, 1553, 1554, 1555, 1556
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Today reception test was run for 6 modules and looks OK for all module. The modules were graded as follows:
1551: A
1552: A
1553: B (Electrical grade B)
1554: A
1555: B (IV grade B)
1556: B (IV grade B)
Protective caps were glued to these modules. |
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Thu Feb 6 17:09:50 2020, Dinko Ferencek, Module assembly, Gluing stamp improvements
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| Silvan has made additional grooves on the gluing stamp which now sits stably on top of the module without any rocking motion and also allows better glue distribution to all the HDI components that are supposed to receive the glue. |
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Wed Feb 5 16:18:30 2020, Dinko Ferencek, Module transfer, Module location tracking added to the assembly spreadsheet
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| To keep track of the module location, two columns were added to the module assembly spreadsheet https://docs.google.com/spreadsheets/d/12m2ESCLPH5AyWuuYV4KV1c5O_NEy7uP5PQKzVsdr3wQ/edit?usp=sharing that contain the dates when a given module is shipped to ETHZ and when it is returned to PSI. |
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Wed Feb 5 16:07:03 2020, Dinko Ferencek, Module assembly, Module assembly spreadsheet migrated to Google Sheets
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Excel file stored on CERNBox containing the module assembly spreadsheet has been replaced with a Google Sheet https://docs.google.com/spreadsheets/d/12m2ESCLPH5AyWuuYV4KV1c5O_NEy7uP5PQKzVsdr3wQ/edit?usp=sharing. This change should make common editing of the spreadsheet easier.
The new spreadsheet has also been linked from the main L1 replacement web page http://cms.web.psi.ch/L1Replacement/ |
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Tue Feb 4 19:52:22 2020, Dinko Ferencek, Cold box tests, Blue coldbox setup for reception tests commissioned
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Today I continued where Matej left off with commissioning the blue coldbox setup for reception tests. All the necessary software (pXar and elComandante) Matej already installed (just had to add the BB2 section in testParameters.dat). What was a problem in communication with Keithley (Model 2400) which was fixed after changing the BAUD rate in elComandante/keithleyClient/keithleyInterface.py to 19200 (value set in Keithley's communications settings) and changing FLOW-CRTL in Keithley's communication settings to XON-XOFF.
The reception test was successfully run for modules 1545, 1547, 1548, 1549, and 1550 after cap gluing. |
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Tue Feb 4 19:51:10 2020, Dinko Ferencek, Module assembly, Cap gluing
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| Today protective caps have been glued to modules 1545, 1547, 1548, 1549, and 1550. |
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Tue Feb 4 19:35:38 2020, Dinko Ferencek, Module transfer, 7 modules prepared for transfer to ETH: 1536, 1537, 1538, 1540, 1541, 1542, 1543
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The following modules have been prepared today for transport to ETH for x-ray qualification:
1536, 1537, 1538, 1540, 1541, 1542, 1543
The FullQualification tar files for these modules have been copied to the common CERNBox folder shared with ETH. |
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Mon Feb 3 17:09:36 2020, Andrey Starodumov, Reception test, 2 modules RT failed: 1544, 1546
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Feb 03
- RT failed
-- 1544:
--- all ROCs are programmable
--- ROC14 no reliable Threshold found, ROC15 no threshold at all
-- 1546
--- all ROCs are programmable
--- no threshold found for all ROCs |
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Mon Feb 3 15:53:32 2020, Andrey Starodumov, Reception test, 5 modules RT: 1545, 1547, 1548, 1549, 1550
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Feb 03
- RT is done and OK for all modules. All 5 modules graded A. |
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Mon Feb 3 15:35:09 2020, Anrey Starodumov, Full test, 4 modules FT: 1539, 1541,1542, 1543
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Jan 29
- Reception test for 1539 OK
- Cap gluing
Jan 30
- Reception test for 1541, 1542, 1543 OK
- Cap gluing
- FT:
-- 1539: C/B/B. First -20 is C due to INCOMPLETE TEST: DTB stuck
==> Must be retested at -20C and then files merging
-- 1541: C/C/C. Electrical Test is C due to Trimbit test failure in ROC13. Threshold is reasonable (see attachment)
==> Manually regraded to B
-- 1542: C/C/C. Electrical Test is C due to RelGain of 0.200 instead of <0.1 (too wide Gain distribution).
-- 1543: B/B/B (-20/-20/+10). Electrical Test is B due to mean noise >200e. |
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Mon Feb 3 11:28:38 2020, Anrey Starodumov, Full test, 4 modules FT: 1536, 1537,1538, 1540
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Jan 28: Reception test for 1536, 1537, 1538 OK
Then cap gluing
Jan 29
- Reception test for 1540 OK
- FT:
-- 1536: B/B/B (-20/-20/+10). Electrical Test is B due to mean noise >200e. IV: 3umA for -20 and +10, slope >300
-- 1537: C/B/B. First -20 is C due ROC10 >200 TrimBits failure, noise >200e. IV: A
-- Trimbit test fails but Trimbit distribution is OK and Threshold reasonable (attachment)
==> Manually regraded to B
-- 1538: B/B/B (-20/-20/+10). Electrical Test is B due to mean noise >200e. IV: <0.2umA for +10, slope ~1
-- 1540: B/B/B (-20/-20/+10). Electrical Test is B due to mean noise >200e. IV: <0.8umA for +10, slope ~2.7 |
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Thu Jan 30 13:51:03 2020, Matej Roguljic, Cold box tests, Fulltest failure - psiAgente
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During the first fulltest@-20 of the full qualification procedure for modules: 1539, 1541, 1542 and 1543; an error message popped up "psi Agente: self.Testboards[0] failed - the following boards are busy: TB1(DTB...:M1541), TB2(DTB...:M1542), TB3(DTB...:M1543). This means that the first fulltest for module 1539 was not executed.
Second fulltest seems to be working fine (so far)
Cause of this problem is not clear. |
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Mon Jan 27 17:50:48 2020, Matej Roguljic, Cold box tests, Failing modules at -20
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| Friday, 24.1., it was noticed that the modules are graded as 'C' in similar fashion. Module is graded A/B at +10 degrees and then graded C at -20. The reason for grade C was that the trimming procedure was not successful on at least one of the ROCs on each module. This problem was further investigated on 27.1. Wolfram suspected that the problem lies in zero suppression mode since the pixels with failed threshold comes in groups of four pixels. The corresponding DAC 'ctrlreg' was set, as recommended, to 17, during previous tests and after changing it to 9, the problems at -20 seem to be gone. This will be further investigated. |
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Fri Jan 24 18:22:00 2020, Dinko Ferencek, General, L1 replacement web page updated
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This week several new links were added to the main L1 replacement web page located at the following URL
http://cms.web.psi.ch/L1Replacement/
The links point to other pages or information related to the replacement module qualification. |
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Fri Jan 24 18:16:09 2020, Dinko Ferencek, Module assembly, Protective cap gluing
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| Today I additionally practiced protective cap gluing by adding a protective cap to module M1536. |
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Fri Jan 24 18:12:00 2020, Dinko Ferencek, Software, MoReWeb code updates
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MoReWeb code updated to include the ROC wafer info in the XrayCalibration and XRayHRQualification pages:
https://gitlab.cern.ch/CMS-IRB/MoReWeb/commit/4de8ea39050600367ae0b8e959fcc00f29be45d8
In addition, two BB2 plots with wrong axis labels were fixed:
https://gitlab.cern.ch/CMS-IRB/MoReWeb/commit/3cfa18fc3aab1a29859ba9f0f81aa0ed4c59d5c8
https://gitlab.cern.ch/CMS-IRB/MoReWeb/commit/bb6627e6ab3f4d08eb54970a7e3d3b751983e15a |
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