ELOG Layer 1 Replacement

L1 replacement web page updated

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.

113

Wed Mar 18 15:23:27 2020

New rules at PSI

From today only two persons from the group allowed to be present. We are working in shifts: Urs in the morning start full qualification and I in the afternoon test HDIs, run Reception, glue caps and switch the cold box, chiller etc after the full test finished.
Silvan is building usually 4 modules and 6-8 HDIs per day.

212

Tue Apr 14 17:29:46 2020

ROC4 or ROC12 defects

Starting from M1650 almost every module has a cluster of dead pixels or broken bump bonds on
ROC4 or (more often) ROC12. The number of defects varied from 20 to 40.
It's almost excluded that such damage is made at PSI, since both of us: Silvan and me, first time connected the cable
to the module.
It would be interesting to check whether these bare modules arrived all together.

222

Tue Apr 21 15:34:57 2020

Retesting starts today

From today we will retest modules that have been tested with pXar SW versions earlier than March 18.
There were a few changes before this date:
1) trimming VCal: 40->50
2) threshold at which trim bit test is done
3) improvements in PH optimization algorithm

No changes in test algorithm have been introduced since March 18.

All modules have been tested with CtrlReg=9, for this several modules failed at +10C.
From now on for test CtrlReg=17 will be used.

Ft will be shorter: only one test at -20C, no T-cycling and one test at +10C. Leakage current will be measured up to 200V.

249

Mon May 4 15:28:14 2020

M1660

M1660 is taken from gel-pak and cabled for retest.
This module was graded C only at second FT at-20C, the first FT at -20C and FT at +10C give grade B. Massive trimming failure of pixels in ROC7 was not observed.
The module will be retested.

280

Fri May 29 15:41:40 2020

M1546

ROC10 of M1546 has 107 pixels with trimming problems:
in a VCal threshold scan after trimming 81 has a threshold underflow, means <0, and 26 pixels are outside 40-60VCal window (around Vcal 50) at +10C only.
Trimbit distribution looks reasonable.
It has been checked that using trimming parameters VCal threshold distribution is fine (checked at +20C). See plots attached:

VCal threshold distribution in p10_1 test:

Trim bits distribution in p10_1 test:

VCal threshold distribution taken with trim parameters at +20C:

286

Fri Jun 5 16:22:19 2020

Cleaning L1_DATA directory

To be able to analyse Xray data and keep Total Production overview in a proper state we need to clean L1_DATA directory.
Reasons:
1) if one analyse Xray test results with flag -new, then all deleted with -d flag tests will be analysed again and Total production overview will have problems
2) if one analyse Xray test results with flag -m, then, first, it's very time consuming and, second, again all tests of this module will be analysed and again this module in total production overview will not have information and hence not ranged.

Solution:
leave only directories with relevant tests: one from cold box test and one from Xray tests.

I also started to remove directories with Reception test.

This should be completed next week of June 8th.

293

Sun Jul 5 13:20:55 2020

Disk cleanup on the lab PC (pc11366.psi.ch)

Home folder was cleaned up by deleting old pXar output .log and .root files. The full list is in the attached file. This released around 11 GB of disk space.

In addition, the following MoReWeb output folders which are no longer needed were deleted

/home/l_tester/L1_DATA/WebOutput/MoReWeb/FinalResults/REV001/R001/M1549_FullQualification_2020-02-04_23h22m_1580854955/
/home/l_tester/L1_DATA/WebOutput/MoReWeb/FinalResults/REV001/R001/M1595_FullQualification_2020-03-12_11h05m_1584007524/
/home/l_tester/L1_DATA/WebOutput/MoReWeb/FinalResults/REV001/R001/M1598_FullQualification_2020-03-12_11h05m_1584007524/
/home/l_tester/L1_DATA/WebOutput/MoReWeb/FinalResults/REV001/R001/M1646_FullQualification_2020-04-02_08h41m_1585809682/

This released around 805 MB of disk space.

Attachment 1: pxar_junk_home.txt

/home/l_tester/L1_SW/pxar/data/M1546/pxar.log
/home/l_tester/L1_SW/pxar/data/M1546/pxar.root
/home/l_tester/L1_SW/pxar_20200318/data/tbm10d_procv4_pxar_old/pxar_20200313_091303.log
/home/l_tester/L1_SW/pxar_20200318/data/tbm10d_procv4_pxar_old/pxar_20200314_091540.log
/home/l_tester/L1_SW/pxar_20200318/data/tbm10d_procv4_pxar_old/pxar_20200312_104546.log
/home/l_tester/L1_SW/pxar_20200318/data/tbm10d_procv4_pxar_old/pxar_20200312_105022.log
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/home/l_tester/L1_SW/pxar_20200318/data/tbm10d_procv4_pxar_old/pxar_20200313_092743.log
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/home/l_tester/L1_SW/pxar_March12/data/M2129/pxar_20190620_135313.log
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Fri Aug 14 13:47:26 2020

new PH optimisation test and Total Overview

New PH optimisation is done at -20C as a FT, hence the results of this test are added to "DB" file as the second m20_1 test.
If there are more than one result per test in the DB file the total production overview is corrupted in a way that for such
modules # of defects is not calculated (due to ambiguity) and hence these modules are not rank according to the number of defects.
To correct this one has to remove from the DB file the second row with the same test. In our case one needs to remove the "old" m20_1 test.
While doing this I noticed that some new FT ended with grade C while the previous ones were fine (graded B) or some subtests are failed
wile grading remains B. Here is the list of such modules:
M1546 graded C
M1556 graded B but trimming completely failed (DTB_WRE1O5): TO RE-TEST
M1624 graded B but instead if 79 pixel defects it has 295 in 3 chips due to trimming problem (DTB_WRE1O5): TO RE-TEST
M1600 graded B but instead of ~50 pixel defects it has about 300 due to trimming problems (DTB_WXC03A): to retest

In general latest FT at -20C has shows less defective pixels and bumps but often leakage current is slightly higher.

Wed Nov 20 16:53:50 2019

Andrey

M1533 and M1534 FullQualification

FullQualification of two modules M1533 and M1534 has been done. Full time of the test is about 7hrs.
Test included: FT@-10C, IV@-10, 2Cycles from -10C up to +10C, FT@-10C, IV@-10C, Ft@1-C and IV@10C.
No issues observed.
To be understood:
1) why SCurves results (noise) empty?
2) why the number of ROCs with defects always -1?

Mon Dec 2 17:29:06 2019

4 modules FT

FullQualification of four modules M1526, M1529, M1521 and M1534 has been done. Full time of the test is about 5.5hrs.
Test included: FT@-20C, IV@-20, 3Cycles from -20C up to +10C, FT@10C and IV@10C.
Only M1521 passed the test (Grade B). Several issues observed in other modules:
1) 2-6 ROCs with TrimBit test failure for many pixels
2) Trimming id bad for some ROCs
3) test at +10C often better than at -20C
4) some ROCs hav issues with Thr and Gain distributions (out of specifications)

To be understood before the mass production!

Tue Dec 3 12:15:54 2019

4 modules FT

Andrey Starodumov wrote:

FullQualification of four modules M1526, M1529, M1521 and M1534 has been done. Full time of the test is about 5.5hrs.
Test included: FT@-20C, IV@-20, 3Cycles from -20C up to +10C, FT@10C and IV@10C.
Only M1521 passed the test (Grade B). Several issues observed in other modules:
1) 2-6 ROCs with TrimBit test failure for many pixels
2) Trimming id bad for some ROCs
3) test at +10C often better than at -20C
4) some ROCs have issues with Thr and Gain distributions (out of specifications)

To be understood before the mass production!

We have run with Urs TrimBit test for M1526 at room T (without turning ON coldbox)
and results are confirmed yesterday observations of TrimBit test failure of several ROCs.
Urs will take a look and try to understand the issue.

To illustrate the problem below two summary tables of M1526 at -20C and +10C are shown.

Attachment 1: M1526ATm20.png

Attachment 2: M1526ATp10.png

Mon Feb 3 11:28:38 2020

Anrey Starodumov

4 modules FT: 1536, 1537,1538, 1540

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

Attachment 1: 1537ROC10m20-TrThr.pdf

Mon Feb 3 15:35:09 2020

Anrey Starodumov

4 modules FT: 1539, 1541,1542, 1543

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.

Attachment 1: 1542ROC13-TrThr.pdf

Fri Feb 7 20:35:44 2020

FT for 4 modules: 1545, 1547, 1548, 1549

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.

Attachment 1: TemperatureCycle.pdf

Sat Feb 8 20:48:11 2020

FT for 4 modules: 1550, 1551, 1552, 1553

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.

Attachment 1: M1553_C11_AddressDecoding.pdf

Attachment 2: TemperatureCycle.pdf

Sun Feb 9 10:52:17 2020

FT for 4 modules: 1539, 1554, 1555, 1556

1539: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs. IV: 0.17 uA at +10 C, slope 1.08
1554: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs. IV: 0.44 uA at +10 C, slope 1.80
1555: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs. IV: 0.99 uA at +10 C, slope 1.30
1556: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs. IV: 0.87 uA at +10 C, slope 1.67

Sun Feb 9 19:34:55 2020

FT for 4 modules: 1557, 1558, 1559, 1560

1557: C/C/C (-20/-20/+10). Mean noise >200e for some ROCs, dead trimbits, failed trimming and mean noise >300e in ROC 4. IV: 0.20 uA at +10 C, slope 1.08
1558: C/C/C (-20/-20/+10). Mean noise >200e for some ROCs, dead trimbits in ROCs 2 and 12, mean noise just above 300e for ROC 2, possibly C* module. IV: 0.27 uA at +10 C, slope 1.07
1559: 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 1.09
1560: B/B/B (-20/-20/+10). Electrical grade is B due to mean noise >200e for some ROCs. IV: 0.24 uA at +10 C, slope 1.09

Fri Feb 14 09:48:27 2020

FT for 12 modules: 1561-1576 (1563, 1567, 1572, 1575 excluded)

Feb. 11

1561: C/B/B (-20/-20/+10). Mean noise >200e for some ROCs, dead trimbits in ROC 6, but trimmed Vcal threshold distribution and distribution of trim bits look OK. IV: 0.26 uA at +10 C, slope 1.07
==> Manually regraded to B
1562: TEST INCOMPLETE: pXar crashed during 2nd Fulltest@-20 (m20_2). For more details, see here.
1564: B/B/B (-20/-20/+10). Electrical grade B due to mean noise >200e for some ROCs. IV: 0.78 uA at +10 C, slope 2.25

Feb. 12

1562: C/C/C (-20/-20/+10). TEST INCOMPLETE: SCurves test failed for all ROCs in all 3 Fulltests with the following error message

ERROR: <PixTestScurves.cc/scurves:L277> no scurve result histograms received?!

Trimming does not work in ROC 2.
1565: B/B/B (-20/-20/+10). Electrical grade B due to mean noise >200e for some ROCs. IV: 0.39 uA at +10 C, slope 1.07
1566: B/B/B (-20/-20/+10). Electrical grade B due to mean noise >200e for some ROCs. IV: 0.37 uA at +10 C, slope 1.07
1568: B/B/B (-20/-20/+10). Electrical grade B due to mean noise >200e for some ROCs. IV: 0.13 uA at +10 C, slope 1.15
1569: B/B/B (-20/-20/+10). Electrical grade B due to mean noise >200e for some ROCs. IV: 0.16 uA at +10 C, slope 1.09
1570: B/B/B (-20/-20/+10). Electrical grade B due to mean noise >200e for some ROCs. IV: 0.18 uA at +10 C, slope 1.08
1571: B/B/B (-20/-20/+10). Electrical grade B due to mean noise >200e for some ROCs. IV: 0.43 uA at +10 C, slope 1.09

Feb. 13

1573: B/B/B (-20/-20/+10). Electrical grade B due to mean noise >200e for some ROCs. IV: 0.25 uA at +10 C, slope 1.09
1574: B/B/B (-20/-20/+10). Electrical grade B due to mean noise >200e for some ROCs, problems with bump bonding and trimming in ROCs 1 and 2. IV: 0.46 uA at +10 C, slope 2.14
1576: B/B/B (-20/-20/+10). Electrical grade B due to mean noise >200e for some ROCs. IV: 0.23 uA at +10 C, slope 1.09

Wed Feb 26 10:34:55 2020

Urs Langenegger