| Status |
ExpNbr |
Date |
Author |
Type |
Category |
Target-Source |
Subject |
| Fixed | e793s |
Fri Feb 12 18:12:00 2021 |
Adrien | S1 | Hardware | N/A | Kapton change |
| Arnaud open today and change the Y Kapton (YA5) of the S1. Everything under vacuum/cooled again so I ran FSC, hopefully this will fix the issue we have with the Junction side. |
| Fixed | e793s |
Fri Feb 12 18:07:24 2021 |
OttoTime | RUN | General | N/A | TimeCalibratorRun |
*** Run Time Calibrator FSC ***
- Run: 614
- MUVI: MUVI2
- Side : MUFEE X (Junction)
- Telescope: 1, 2, 3, 4 |
| Fixed | e793s |
Fri Feb 12 08:52:30 2021 |
mugast | RUN | General | 3-alpha | run 613: long alpha run |
| all Muvi in trigger, mugast stand alone. all detector Bias on. |
| Fixed | e793s |
Mon Feb 8 16:33:22 2021 |
OttoTime | RUN | General | N/A | TimeCalibratorRun |
*** Run Time Calibrator FSC ***
- Run: 612
- MUVI: MUVI2
- Side : MUFEE Y (Ohmic)
- Telescope: 1, 2, 3, 4 |
| Fixed | e793s |
Mon Feb 8 16:20:42 2021 |
OttoTime | RUN | General | N/A | TimeCalibratorRun |
*** Run Time Calibrator FSC ***
- Run: 611
- MUVI: MUVI2
- Side : MUFEE X (Junction)
- Telescope: 1, 2, 3, 4 |
| Fixed | e793s |
Mon Feb 8 11:28:38 2021 |
OttoTime | RUN | General | N/A | TimeCalibratorRun |
*** Run Time Calibrator FSC ***
- Run: 610
- MUVI: MUVI3
- Side : MUFEE Y (Ohmic)
- Telescope: 1, 2, 3, 4 |
| Fixed | e793s |
Mon Feb 8 11:25:29 2021 |
Adrien and Freddy | S1 | General | N/A | FSC run |
we ran FSC on all card. S1 is dismounted.
Pulser goes on all channel and works well so electronic is fine.
We will ask Laurent to remount the detector and re run the test. |
| Attachment 1: fscE_08022023.png
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| Attachment 2: fscT_08022022.png
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| Fixed | e793s |
Mon Feb 8 11:16:18 2021 |
OttoTime | RUN | General | N/A | TimeCalibratorRun |
*** Run Time Calibrator FSC ***
- Run: 609
- MUVI: MUVI3
- Side : MUFEE X (Junction)
- Telescope: 1, 2, 3, 4 |
| Fixed | e793s |
Mon Feb 8 11:04:04 2021 |
OttoTime | RUN | General | N/A | TimeCalibratorRun |
*** Run Time Calibrator FSC ***
- Run: 608
- MUVI: MUVI2
- Side : MUFEE Y (Ohmic)
- Telescope: 1, 2, 3, 4 |
| Fixed | e793s |
Mon Feb 8 10:51:48 2021 |
OttoTime | RUN | General | N/A | TimeCalibratorRun |
*** Run Time Calibrator FSC ***
- Run: 607
- MUVI: MUVI2
- Side : MUFEE X (Junction)
- Telescope: 1, 2, 3, 4 |
| Fixed | e793s |
Mon Feb 8 10:39:35 2021 |
OttoTime | RUN | General | N/A | TimeCalibratorRun |
*** Run Time Calibrator FSC ***
- Run: 606
- MUVI: MUVI1
- Side : MUFEE Y (Ohmic)
- Telescope: 1, 2, 3, 4 |
| Fixed | e793s |
Mon Feb 8 10:27:23 2021 |
OttoTime | RUN | General | N/A | TimeCalibratorRun |
*** Run Time Calibrator FSC ***
- Run: 605
- MUVI: MUVI1
- Side : MUFEE X (Junction)
- Telescope: 1, 2, 3, 4 |
| Fixed | TEST |
Fri Feb 5 12:44:42 2021 |
Franco | GRIT | Hardware | N/A | Pulser on MG11 MUFEE Y |
I managed to obtain the spectrum with the pulser on the annular (Y side, namely sectors).
The raw strip numbers where I should have the 16 sectors are: 14, 16, 18, 20, 22, 24, 26, 28, 36, 38, 40, 42, 44, 46, 48 and 50.
The 5 strips I could see with the alpha source are: 20, 40, 44, 48, 50.
Now with the pulser I don't see the following strips: 14, 16, 18, 20, 22, 24, 26, 28, 36, 40, 42, 44, 48, 50.
So the pulser apparently doesn't go through most of the channels that are connected to a sector and all the channels that were ok with the alpha source now don't see the pulser...
The plots below are the pulser energy vs the raw strip number with a zoom on the region where I should have all the sectors. The plot below is the projection on X (strip number) of the first plot, now considering all the strips -> only strips connected to sectors don't show the pulser peak.
Concerning the rings, most of them see the alpha source but only few of them (the ones between the two red lines in the last figure attached) correctly display three peaks. The others have many peaks as a result of missing sectors on the Y side. |
| Attachment 1: pulser_all_channels_MG11Y_05022021.png
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| Attachment 2: pulser_all_strips_MG11Y_05022021.png
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| Attachment 3: Working_rings_annular_05022021.png
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| Fixed | TEST |
Thu Feb 4 18:16:47 2021 |
Franco | GRIT | Hardware | 3-alpha | Problems with the annular persist |
We opened the chamber to verify the connections of the kaptons but they were all well connected. We checked with the tester the conductivity of the kapton YA5 and it was fine so we excluded any problem related to the kapton. The boards are working properly (the pulser is well seen). We have to conclude that the problem comes from the detector. We made another alpha source run and indeed the result is the same as yesterday -> 5 sectors working on Y. We also tried to rise the HV of the annular up to 95V instead of the nominal 80V: the current went to 19 uA but no new sector appeared in the spectra.
Apart from the usual spectra, attached are also the pedestals of MG11, the alpha spectrum for ch48 of MG11_Y (one of the working sectors). The HV were the same as yesterday. |
| Attachment 1: MM_raw_04022021.png
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| Attachment 2: MG_X_raw_04022021.png
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| Attachment 3: MG_Y_raw_04022021.png
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| Attachment 4: MG_impact_04022021.png
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| Attachment 5: MM_impact_04022021.png
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| Attachment 6: pedestals_MG11.png
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| Attachment 7: LV_04022021.png
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| Attachment 8: alpha_spectrum_ch48_MG11Y.png
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| Fixed | TEST |
Wed Feb 3 16:42:41 2021 |
Franco | GRIT | General | 3-alpha | Status of the set-up (February 3rd 2021) |
We re-mounted the annular, put the source and cooled down to 0 deg. Voltages and spectra are attached.
MG11 has a very high current (15 uA) but stable. MG9 started from 2 uA and its current is slightly increasing. The MUST2 detectors don't show anymore that oscillation in current that we observed one year ago. MM3 has a higher current (2.9 uA) with respect to the others.
Only 5 sectors are working for the annular, 8 less than last year. We need to check whether it is a problem of the kapton or of the detector itself. |
| Attachment 1: Voltages_03022021.png
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| Attachment 2: MM_raw_03022021.png
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| Attachment 3: MG_X_raw_03022021.png
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| Attachment 4: MG_Y_raw_03022021.png
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| Fixed | TEST |
Tue Feb 2 16:41:17 2021 |
Franco | VACUUM | Hardware | N/A | MUGAST undervacuum and powered up |
I put back the supply of MM1 to the channel 1 of the MUST2 box (as in the normal configuration) and polarized the detectors to make a rapid re-check. I didn't see any detector tripping. MM1, switched on only for a couple of minutes, had a stable current at 1.3 uA. The stability of the detectors over time should anyway be checked better tomorrow leaving them polarized for a longer time.
| Adrien wrote: | MUGAST is undervacuum thanks to Arnaud and Laurent.
I switch on all BT and HT. everything fine so far. Keeping the HV to check there is no trip on the silicon |
|
| Fixed | e793s |
Fri Jan 29 15:11:54 2021 |
Adrien | VACUUM | General | N/A | MUGAST undervacuum and powered up |
MUGAST is undervacuum thanks to Arnaud and Laurent.
I switch on all BT and HT. everything fine so far. Keeping the HV to check there is no trip on the silicon |
| | |
Tue May 19 12:23:57 2020 |
mugast | ONLINE | | | |
|
| Fixed | e793s |
Thu Mar 12 17:25:19 2020 |
mugast | GRIT | General | 3-alpha | run 0601 - alpha source with pedestals |
| Alpha source calibration run without pedestal suppression and cooling at 0 deg. |
| Fixed | e793s |
Thu Mar 12 15:48:58 2020 |
Franco&Marlène | GRIT | General | | Summary and TO DO list 12/03/2020 |
What remains to be done
- Do the time calibration of all boards (time calibrator has to be connected)
. When checking the pulser on all boards we saw that MG5 has no triggers on Y and MG9 does not see the pulser (neither X or Y). So we will not get time calibration for those
- Plug the STOP in the MUVI (either clean HF that was used in the previous experiment or CATS2 clean that was also prepared during the last experiment but should be connected)
- Rename parameters in the GECO of the experiment
. We now run only with 3 MUVI, MG9 (square) is put in channel 3 of MUVI2 (where MG6 was plugged before)
. We changed the names for the ACTION_mugast.CHC_PAR but it has to be done for the experiment file)
- Targets will be mounted last week before the experiment. The surveyor have to remeasure the position of all targets.
- hvm_watcher has to be modified according to the changes made on the distribution boxes :
. MG9 is on the LV/BT of the new distribution box on channel 6
. MM1 is on channel 5 of the MUST2 distribution box (instead of channel 1).
We noticed instabilities in the current of the MUST2 detectors : T1 is fluctuating from time to time and T2 current is increasing slowly but surely.
We now run with 60V on MM1 and MM2 and 70V on MM3 and MM4.
The fluctuations on MM1 are usually solved when cooling down to 0 degree.
!! We do not leave HV and LV on when there is nobody to check the temperature of the boards and the coolers. |