| Status |
ExpNbr |
Date |
Author |
Type |
Category |
Target-Source |
Subject |
| Fixed | e768s |
Thu Aug 1 15:46:43 2019 |
OttoRun | RUN | General | 3-alpha | Run318 |
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Run : 318
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Start at 2019-08-01 15:43:10.932359
Run 318 in MugastX/mugast
Alpha run pedestal supp
Calib after manip
Stop at 2019-08-01 15:55:33.476653
Stop comment: Das didn't take into account the piedestals suppression
Stop at 2019-08-01 16:00:27.768308
Stop comment: type your message here |
| Fixed | e768s |
Thu Aug 1 15:50:41 2019 |
OttoRun (ou pas) | RUN | General | 3-alpha | run 317 |
| Run 317 no pedestal supp alpha run |
| Fixed | e768s |
Thu Aug 1 16:01:16 2019 |
OttoRun | RUN | General | 3-alpha | Run 319 (Alpha calibration with pedestal suppression) |
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Run : 319
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Start at 2019-08-01 16:00:31.525552
Run 319 in MugastX/mugast
Alpha run pedestal supp
Calib after manip
Stop at 2019-08-02 09:39:57.536485
Stop comment: end of alpha run
Stop at 2019-08-02 09:53:34.227950
Stop comment: type your message here |
| Fixed | TEST |
Thu Oct 17 12:01:09 2019 |
Franco & Marlène | GRIT | Hardware | 3-alpha | Test of configuration with 4 MUVI and 3 GAMERS |
The electronics set-up for MUGAST2020 has been tested with 4 MUVI on 4 VXI crates, 1GMT for MASTER and 3 GAMERS for slaves.
Configuration file is named mugast.das
We have modified the mugast.detector and the parameters for MUVI4 with names:
- MUVI4_ch1 : MG2
- MUVI4_ch2 : MG6
- MUVI4_ch3 : MG8
- MUVI4_ch4 : MG12 (not used and not tested)
For the 3 first channels of MUVI4 we connected MG1, MG3 and MG4.
Cables for MUVI4_ch2 is not working (to be repaired).
With the alpha source (double side) we were able to run during all night and it was stable (attached are pictures of alpha source).
We notice that the rate of MG7 is lower (1/3) than the other ones (as usual). We tried to increase bias but leakage current is also increasing proportionally.
We also notice that 3alpha source shows lower statistics in the last (higher energy) peak but all detectors backward see the same.
The rates of MG2 and MG8 are consistent (there was no pedestal suppression).
We performed a pulser test of MUVI4 putting 5000Hz rate. The dead time is about 97%. It is consistent with MUVI1 in the same condition (5000 Hz and no pedestal suppression). The dead time is 90% when we suppress the pedestals.
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| Attachment 1: Mugast_alpha_17102019
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| Attachment 2: Mugast_alpha_17102020_2
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| Fixed | TEST |
Thu Jan 23 14:06:51 2020 |
Franco&Marlène | GRIT | Hardware | 3-alpha | Status of detectors on 23-01-20 |
Short alpha source run (not saved on disk) to test the detectors.
Summary :
- MG1,3,4,5 and 7 are all OK (few more strips missing on Y)
- MM1,2,4 OK
- MM3 has a lot of strip missing both in X and Y and current has increased wince last campaign (4uA)--> katpon should be checked |
| Attachment 1: mg_impact_alpha_23-01-2020.png
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| Attachment 2: mg_Y_raw_alpha_23-01-2021.png
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| Attachment 3: mg_X_alpha_23-01-2021.png
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| Attachment 4: mm_impact_alpha_23-01-2020.png
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| Attachment 5: mm_Y_alpha_23-01-2020.png
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| Attachment 6: mm_X_alpha_23-01-2020.png
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| Fixed | TEST |
Wed Feb 12 09:32:17 2020 |
mugast | RUN | General | 3-alpha | Run 500 - 3alpha - mugast standalone |
RUN 500
start: 11/02/2020 @ 19h00
stop: 12/02/2020 @ 10h00
alpha source test - cooling 14°C
Remarks:
- The two new detectors (MG2 and 6) seem functional;
- MG11 annular, ok for sectors (Y) but many rings have double peaks;
- MM1 current was oscillating yesterday evening with values around 3 uA, this morning it was stable at ~0.55 uA. |
| Attachment 1: MG_all_X_alpha_source_run500
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| Attachment 2: MG_all_Y_alpha_source_run500
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| Fixed | TEST |
Fri Feb 14 10:49:22 2020 |
Marlène & Franco | RUN | General | 3-alpha | MG11 issues |
We analyzed the behaviour of the annular. We realized that the 4-peaks behaviour on X was already present last year but only on one sector, now it's on two sectors. We noticed that there is a correlation between the malfunctioning sectors and the missing strips on Y. Last year there was only a missing strip on Y, affecting only one sector on X; now 3 strips are missing on Y, affecting 2 sectors on X. We believe that the fact that the boundings are missing have an impact on the grounding, therefore the sectors are not always biased properly, resulting in an oscillation of the pedestal. We estimate that this will cause a loss of efficiency of ~25% for the annular (from ~90% to ~67%).
| mugast wrote: | RUN 500
start: 11/02/2020 @ 19h00
stop: 12/02/2020 @ 10h00
alpha source test - cooling 14°C
Remarks:
- The two new detectors (MG2 and 6) seem functional;
- MG11 annular, ok for sectors (Y) but many rings have double peaks;
- MM1 current was oscillating yesterday evening with values around 3 uA, this morning it was stable at ~0.55 uA. |
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| Fixed | TEST |
Tue Feb 18 10:00:40 2020 |
mugast | RUN | General | 3-alpha | RUN 501 - missing info |
RUN 501
alpha run with cooling during the night from 13-14/02/2020 |
| Fixed | TEST |
Tue Feb 18 17:53:36 2020 |
Franco | GRIT | General | 3-alpha | Alpha calibration for exp e775s (run 0501) |
In attachment raw and calibrated spectra for run 0501 (alpha source) for MUST2 and Mugast.
Overall resolution of 36 keV on MUST2 and 40 keV on MUGAST detector. |
| Attachment 1: E_raw_MM.png
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| Attachment 2: E_raw_MG.png
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| Attachment 3: E_cal_MM.png
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| Attachment 4: E_cal_MG.png
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| Fixed | e775s |
Fri Mar 6 17:47:07 2020 |
OttoRun | RUN | General | 3-alpha | Run192 |
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Run : 192
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Start at 2020-03-06 17:44:54.624746
MUGAST run after exp.
Alpha run TEST
Stop at 2020-03-06 17:48:05.130462
Stop comment: |
| Fixed | e775s |
Fri Mar 6 17:52:10 2020 |
OttoRun | RUN | General | 3-alpha | Run193 |
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Run : 193
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Start at 2020-03-06 17:50:38.354778
MUGAST run after exp.
Alpha run start at -0deg so it might be interested not to use the beginning of the run...
Stop at 2020-03-09 11:11:27.038211
Stop comment:
Stop at 2020-03-09 16:32:45.419072
Stop comment: |
| Fixed | e775s |
Mon Mar 9 16:32:46 2020 |
OttoRun | RUN | General | 3-alpha | Run200 |
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Run : 200
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Start at 2020-03-09 16:26:05.126624
MUGAST run after exp.
Alpha run start at -0deg so it might be interested not to use the beginning of the run... |
| Fixed | TEST |
Mon Mar 9 16:48:25 2020 |
OttoRun | RUN | General | 3-alpha | Run524 |
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Run : 524
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Start at 2020-03-09 16:33:27.725289
MUGAST run after recovery of overheating problem.
Mugast is cooled down with the MUST2 cooling system. MUST2 is therefore not biased.
In attachment the raw spectra and the cal spectra using the calibration done before the e775s experiment. Some pedestals seem to have moved.
The energy resolution per strip on X and Y is around 40 keV (I took MG1 in this case).
Stop at 2020-03-09 18:36:44.467422
Stop comment:
Stop at 2020-03-10 16:27:00.079221
Stop comment:
Stop at 2020-03-11 11:00:13.272842
Stop comment: |
| Fixed | TEST |
Tue Mar 10 11:05:40 2020 |
Franco | GRIT | Hardware | 3-alpha | Trip in the cooling system after e775s experiment |
In the weekend after the experiment e775s (7-8 March 2020) a problem with the cooling system of Mugast occurred. In particular, in the morning of Saturday 7th around 12h the cooling system tripped and some detectors remained switched on until Monday 9th in the morning. After a check, it looks like all Mugast detectors are ok except MG6, which cannot be biased anymore.
The alpha calibration run of the weekend (run_0193) is divided into 55 runs. Runs from .0 to .11 can be safely used for the post-experiment alpha calibration, those from .12 to .54 are probably useless to this aim.
In the first attachment is the evolution of the DSSD energy (of all telescopes together because it's the calibrated energy) for run .12, that started on Saturday 7th at 11.43 and ended at 12.55. At the end of the run it is evident that something wrong is going on with the detectors. In the following runs this behaviour is confirmed and going even worse.
In the second attachment is the evolution of the DSSD energy for MG6 and for MG1 in run .13, so right after the cooling system tripped, showing that MG6 immediately "suffered" much more the heating-up.
In the last 2 attachments are the raw energies for X and Y of MG11 in run 0524 done on Monday 9th afternoon after we re-biased the detectors compared with run 0193 (from .9 to .11) before the cooling system tripped. It looks like the part of MG11 X from strip 35 to 50, that before the heating was having the 4-peaks behaviour, now behaves normally, while the Y is still the same, with 3 missing strips. |
| Attachment 1: run0193_12_heat.png
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| Attachment 2: run0193_13_heat_MG6vsMG1.png
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| Attachment 3: run_0524_MG11XYraw.png
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| Attachment 4: run_0193_9_19_11_MG11XYraw.png
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| Fixed | e793s |
Wed Mar 11 19:02:54 2020 |
mugast | GRIT | General | 3-alpha | Alpha calibration for e793s - run 600 |
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At around 19h we started the alpha calibration run for Mugast+MUST2+square with pedestal suppression and cooling at 0 degrees.
We also took screenshots for HV and LV before and after the run.
Stop at 2020-03-13 15:18:45.084350
Stop comment: type your message here
Stop at 2020-03-13 15:18:50.125372
Stop comment: type your message here
Stop at 2020-03-13 15:18:50.616020
Stop comment: type your message here
Stop at 2020-03-13 15:18:51.086440
Stop comment: type your message here
Stop at 2020-03-13 15:18:51.566825
Stop comment: type your message here
Stop at 2020-03-13 16:25:12.126461
Stop comment:
Stop at 2020-03-13 16:25:12.753975
Stop comment:
Stop at 2021-02-10 16:52:24.698114
Stop comment:
Stop at 2021-02-10 16:52:24.864522
Stop comment: |
| Fixed | e793s |
Wed Mar 11 22:01:18 2020 |
mugast | GRIT | General | 3-alpha | Alpha calibration - run 600 |
After 2h30' of run we checked the temperatures of the boards and we noticed that MG7 had 63 degrees on both X and Y, which is very high; MG9 was around 56 on X and 26 on Y. There might be a problem in the loop of the cooling system because the other detectors are pretty fine, with temperatures around 20-25 degrees.
In attachment the evolution of the (calibrated) DSSD energy for MG7 during the run.
| mugast wrote: | At around 19h we started the alpha calibration run for Mugast+MUST2+square with pedestal suppression and cooling at 0 degrees.
We also took screenshots for HV and LV before and after the run. |
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| Attachment 1: MG7X_run600_Eevolution.png
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| Fixed | e793s |
Thu Mar 12 14:54:13 2020 |
Marlène & Franco | GRIT | General | 3-alpha | Run 0601 - alpha source calibration |
We start the alpha source calibration run with pedestal suppression (except for MG7 and MG9) and cooling at 0 deg.
The HV for MUST2 are in attachment. It is not clear whether they will remain unchanged during the experiment since some currents are high. |
| Attachment 1: HV_run601.png
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| 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 | 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 |
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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