 Thu Nov 28 15:58:20 2019, Matej Roguljic, General, Activities 26.-29.11.2019. 
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26.11.
Prepared the tools for RD53A digital module assembly in the assembly lab
Investigated if the latest pXar commit solved the issue with PhOptimization, now called Ph, and it runs successfully.
Investigated the bump bonding issue in which pXar reports bad bumps, but we suspected that was not the case. And indeed, putting a source on top of the chip reported to have bad bumps and taking data shows that there are no bad bumps as reported by pXar. Our conclusion was that the BB test developed by PSI is not applicable for bumps bonded by Helsinki. BB2 seems to be appropriate.
27.11.
Assembled a Phase 2 digital module using good ROCs - 1A48, 1A47, 1A43, 1A42; being ROC 0,1,2 and 3, respectively.
Used X-ray box to confirm our BB findings yesterday and the results agree that there are no defective bumps (as reported by pXar) on M1534.
28.11.
Took a look at the assembled module and it seems that one corner of the HDI was not properly glued. There are also solder marks on a couple of pads so we decided not to wire-bond it.
Measured the alignment of the two assembled module (one module was assembled during my last visit) using the microscope. The discrepancies in the distance between HDI wire-bond pads and ROC wire-bond pads are around 200 microns. If we take the length of the module to be 4cm, this is less than half a degree of tilt.
Worked on presentation reporting these activities for the tracker week. |
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Thu Sep 26 17:38:07 2019, Matej Roguljic, General, Activities 25.-26.9.
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| It was planned to test a batch of HDIs these 2 days but the shipment was late. Dinko and Andrei were shown the HDI testing procedure. Matej further worked on the script used to test the HDIs. Dinko glued caps on 2 dummy modules and on M1522. New HDIs arrived on 26th and it looks like the kapton will have to be put underneath them during the testing to prevent sparking. |
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Mon Jan 20 18:09:50 2020, Matej Roguljic, General, Activities 20.-31.01.2020.
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20.01.
Expanded the HDI testing setup to be able to mount wire-bonded HDIs to HDI handles. Tested 12 HDIs (v7.2), all of them passed the tests. HDIs were given to Silvan and are located in the storage box in the assembly lab. They will be used for module production.
21.01.
Tested 4 HDIs, version 7.1. All passed the electrical tests.
Tested 16 v7.2 HDIs. All but one passed the electrical tests.
Glued a protection cap on a pre-production module (M1535).
22.01.
Investigated problems with full qualification setup, narrowed it down to communication between PC and Keithley.
23.01.
Tested 23 HDIs. One failed the test, rest of them passed.
24.01.
Tested 15 HDIs. All of them passed the tests.
Investigated problems with threshold/trim tests in full qualification when going to -20. Suspecting wrong DACs used in the test.
27.01.
Continuing to investigate problems with threshold in trimming procedures. The problem seems to be in the DAC 'ctrlreg' which was set to 17. Setting it to 9 removed the problem for M1529.
28.01.
Confirmed that 'ctrlreg' works also at room +20 degrees. Did reception test on modules 1529, 1536, 1537 and 1538. After this, caps were glued to modules 1537 and 1538. Did fulltest@-20, IV@-20, fullltest@+10 and IV@+10 for modules 1534, 1532, 1529 and 1536.
29.01.
Ran reeption on moules 1539 and 1540. Ran full qualification on modules 1536, 1537, 1538, 1540. Module 1539 turned out to have broken wirebonds on one TBM, reported this to Silvan and he re-bonded it. Assembled a second cap-gluing station. |
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Tue Aug 6 15:15:00 2019, Matej Roguljic, General, Activities 19.6.-4.7.2019.
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17.6.-21.6.
Andrei and Matej were at PSI working on the cap gluing setup
Andrei cap glued M2029 (Box9,T110)
Matej cap glued M2331
M2331 was tested before and after cap gluing
M2233 was taken to Zagreb for irradiatio, cable of the mdule is in Box4, T040
1.7.
HDIs 3019 and 3020 were tested and both failed, results in the HDIresults
Performed characterization on one v4 chip, it will be irradiated in Zagreb and restested
2.7.
Silvan bonded the M1520 so Andrei and Matej performed full qualification on it (-20 and +10) and it took 5 hours
3.7.
Glued caps on 3 dummy modules with 3 different glues.
HDI 1317-3-008 with two component epoxy glue
HDI 1317-3-010 with SG-20 silicon glue
HDI 1317-3-004 with WS-200 silicon glue
4.7.
3 dummy modules taken to Zagreb for irradiation by Matej
M1508 was also taken |
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Thu Sep 12 10:32:27 2019, Matej Roguljic, General, Activities 10.9.-19.9.2019.
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10.9.
Modules 1504,1505,1520 brought to PSI after irradiation to 1.2 MGy in Zagreb. All 3 were not working when put under test with pXar. 1504 and 1520 couldn't set Vana at all. 1505 could set Vana, but timing couldn't be found and pixels weren't responding. Inspection under the microscope showed some "white-greenish" deposits on the metal pads on the HDIs which are most likely shorting the ROC pads causing the module to be non-responsive
11.9.
Removed cap from 1504 to take a better look under the microscope and some photos. The good news is that the glue holds really well. The deposition looks like a crystal growth. It reminded Danek of the humidity issues they had at CERN in 2014. Touching it with a needle showed that it is not completely solid, like "wet-snow", however, on some pads, the deposition was more solid. There was also small transparent liquid deposits observed. Prepared 3 modules for cap gluing training; 1047, 10X1, 10X2. Only 1047 works (partially) and Reception test was performed on it. Two gluing jigs prepared in the assembly lab.
12.9.
Ran reception on 1509, it will go to ETH for irradiation (not really sure if it's ETH). Further tested modules 10X1 and 10X2. X2 should have hubID set to 17,25 after which the ROCs are programmable, however, there is no readout. X1 should have hudID 31,30; but only TBM with hubID 30 works, ROCs are programmable, but no readout as well. Glued protection cap to a module 10X1. Roughly 4 minutes after the start of mixing, the glue starts to become fairly solid which gives us a constraint on the time it takes us to apply it to a module.
13.9.
Glued caps on 1508 and 1047 using the jig further from the entrance door of the assembly lab. 1508 was glued first and had an asymmetrically placed cap (one side of the cap quite close to the wirebonds). The stage was adjusted so the cap glued to 1047 was properly placed. An unused HDI was found 8-011, it was tested and found to be working until the HV test where it started sparking at -1000V, similar to 8-010. There are burn marks visible under the microscope on the same position as the ones on 8-010.
16.9.
Investigated further the sparking issue with the HDIs. Ed Bartz took a look at the photos and identified that the damaged part of the TBM is the protection diode of pin 46.
17.9.
Equipped the coldbox with 4 DTBs which makes it possible to do qualification on 4 modules at the same time. Investigated phase2 ROC-HDI gluing jig. |
 Thu Sep 19 14:20:07 2019, Matej Roguljic, General, Activities 10.9.-19.9.2019.
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| Matej Roguljic wrote: | 10.9.
Modules 1504,1505,1520 brought to PSI after irradiation to 1.2 MGy in Zagreb. All 3 were not working when put under test with pXar. 1504 and 1520 couldn't set Vana at all. 1505 could set Vana, but timing couldn't be found and pixels weren't responding. Inspection under the microscope showed some "white-greenish" deposits on the metal pads on the HDIs which are most likely shorting the ROC pads causing the module to be non-responsive
11.9.
Removed cap from 1504 to take a better look under the microscope and some photos. The good news is that the glue holds really well. The deposition looks like a crystal growth. It reminded Danek of the humidity issues they had at CERN in 2014. Touching it with a needle showed that it is not completely solid, like "wet-snow", however, on some pads, the deposition was more solid. There was also small transparent liquid deposits observed. Prepared 3 modules for cap gluing training; 1047, 10X1, 10X2. Only 1047 works (partially) and Reception test was performed on it. Two gluing jigs prepared in the assembly lab.
12.9.
Ran reception on 1509, it will go to ETH for irradiation (not really sure if it's ETH). Further tested modules 10X1 and 10X2. X2 should have hubID set to 17,25 after which the ROCs are programmable, however, there is no readout. X1 should have hudID 31,30; but only TBM with hubID 30 works, ROCs are programmable, but no readout as well. Glued protection cap to a module 10X1. Roughly 4 minutes after the start of mixing, the glue starts to become fairly solid which gives us a constraint on the time it takes us to apply it to a module.
13.9.
Glued caps on 1508 and 1047 using the jig further from the entrance door of the assembly lab. 1508 was glued first and had an asymmetrically placed cap (one side of the cap quite close to the wirebonds). The stage was adjusted so the cap glued to 1047 was properly placed. An unused HDI was found 8-011, it was tested and found to be working until the HV test where it started sparking at -1000V, similar to 8-010. There are burn marks visible under the microscope on the same position as the ones on 8-010.
16.9.
Investigated further the sparking issue with the HDIs. Ed Bartz took a look at the photos and identified that the damaged part of the TBM is the protection diode of pin 46.
17.9.
Equipped the coldbox with 4 DTBs which makes it possible to do qualification on 4 modules at the same time. Investigated phase2 ROC-HDI gluing jig. |
18.9.
Decided on a final HDI irradiation test. We will have an HDI without components in a bag filled with nitrogen (N2 bag), HDI with components in N2 bag, Dummy module (HDI with cap glued on it) in N2 bag, Dummy module not in an N2 bag and and an HDI with components cleaned by Silvan not in an N2 bag. The idea is to expose them to irradiation in a dry environment to check if there will be weird deposits on the metallic pads of the HDI. With the 2 samples not in an N2 bag we will see if there are some deposits again. To do so, before irradiation we will inspect them under a microscope and take photos and inspect them immediately after irradiation.
Furthermore, a possible explanation for the HDI sparking problem was devised and solutions, if necessary. It is described in more details in a separate log entry. |
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Tue May 19 13:43:55 2020, Andrey Starodumov, Module transfer, 9 modules shipped to PSI
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Quick check: Leakage current, set Vana, VthrCompCalDel and PixelAlive
Module Current@-150V Programmable Readout
M1623 -0.335uA OK OK
M1630 -0.430uA OK OK
M1632 -0.854uA OK OK
M1634 -0.243uA OK OK
M1636 -0.962uA OK OK
M1637 -0.452uA OK OK
M1638 -0.440uA OK OK
M1639 -0.760uA OK OK
M1640 -0.354uA OK OK |
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Wed Feb 12 10:43:04 2020, Dinko Ferencek, Module transfer, 9 modules sent to ETH: 1539, 1545, 1547, 1548, 1549, 1550, 1551, 1552, 1553
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Yesterday the following modules were sent to ETH:
1539, 1545, 1547, 1548, 1549, 1550, 1551, 1552, 1553
The FullQualification tar files for these modules have been copied to the common CERNBox folder shared with ETH and the transfer dates have been added to the assembly spreadsheet. |
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Thu May 28 14:40:57 2020, Andrey Starodumov, Module transfer, 8 modules shipped to PSI
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Quick check: Leakage current, set Vana, VthrCompCalDel and PixelAlive
Module Current@-150V Programmable Readout
M1555 -6.000uA OK OK Current is rising up to 11uA with time after PixelAlive is done at +22C !!!
M1556 -1.282uA OK OK
M1557 -0.600uA OK OK
M1558 -0.835uA OK OK
M1559 -0.930uA OK OK
M1560 -0.745uA OK OK
M1561 -0.770uA OK OK
M1564 -1.755uA OK OK |
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Mon May 18 14:05:01 2020, Andrey Starodumov, Module transfer, 8 modules shipped to ETHZ
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M1555, M1556, M1557,
M1558, M1559, M1560,
M1561, M1564 |
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Tue Mar 24 15:16:56 2020, Andrey Starodumov, HDI test, 8 HDIs tested on Mar 23
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1014, 1016, 2001, 2003,
2004, 4013, 4015, 5014
All are good. |
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Mon Apr 6 17:07:23 2020, Andrey Starodumov, HDI test, 8 HDIs tested
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HDIs
4937 5043 5042 4040
2029 4019 4018 4017
are tested. All OK. |
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Wed Mar 11 17:22:57 2020, Matej Roguljic, HDI test, 8 HDI tests on 11.3.
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I tested 8 HDIs today: 5029,5030,5031,6034,6036,6035,1031 and 1032
All of them tested fine. |
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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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Thu Mar 26 17:43:06 2020, Andrey Starodumov, HDI test, 6+1 HDI tested
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HDIs: 6021, 3014, 2005, 2009, 2006 and 2010 are OK
HDI 6024 failed: SDA0 and SDA2 on Ch1 missing
Looks like lower than 800V measured effect relates to the cable.
After cable has been changed all measurements 790V |
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Thu Apr 2 17:08:03 2020, Andrey Starodumov, HDI test, 6 HDIs tested
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| 3013, 1046, 1047, 1048, 5038, 5039 are tested. All are OK. |
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Tue Apr 7 17:59:27 2020, Andrey Starodumov, HDI test, 6 HDIs tested
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HDIs
2030, 2031, 1021, 1022, 1023, 1035
are tested. All OK. |
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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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Thu Mar 12 12:19:43 2020, Matej Roguljic, HDI test, 5 HDI tests on 12.3.
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| I tested 5 HDIs on 12.3. 1030,1029,1040,1039 and 1038. 1039 failed all the electrical tests. All the others passed the tests. HDI 1038 has one wirebond which is connected to the pad on the HDI and then it extends back up (like this: TBM./\.HDI/). The connection is good, but I just want to check with Silvan later if this is a problem. |
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Wed Mar 25 18:30:23 2020, Andrey Starodumov, HDI test, 4+2 HDI tested
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2 suspicious HDIs retested and found OK: 5006/5007
5013, 5016, 3017, 3019 are OK. |
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