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Fixed, , Thu Feb 27 15:54:09 2020, Marlène , RUN, General, , RUN 141 junk (problem at start)
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Fixed, TEST, Wed Jan 16 16:33:28 2019, Marlène, GRIT, General, 3-alpha, Status of detectors on 16/01/19 
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| MG1 has some issue with the HT cable (for the BT bias). There is a shortcut only under vacuum. We checked the connector but we have to do vacuum again to check it. |
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Fixed, , Tue Jan 22 11:15:15 2019, Marlène, GRIT, General, N/A, Square detectors
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MG9C (thin square detector coupled with thick square detector unplugged) noisy
On X channels --> no noise problem ( about 100 ORD in the dark)
On Y channels --> MATE 10 & 11 noisy ! (see picture below with noisy Y piedestals)
With internal pulser (trigered by CK_TST) the counting rate is OK only if the thresholds are set at 1 MeV. If they are set at 500 keV, the counting rate is 10 times higher than the CK_TST
For MG10C, ORD is OK ! |
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Fixed, , Wed Jan 23 12:24:10 2019, Marlène, GRIT, General, , Change cable MG1T - Exchange of detectors named MG9C & MG10C
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23/01/19
Change of the HT/BT cable of MG1T (the one that had a short cut before when the chamber was closed)
MG9C is now the square detector nb 4 (Micron number) and coupled with the thick detector --> this detector was working properly
MG10C is detector nb 3 (Micron number) --> this detector was noisy before |
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Fixed, , Fri Jan 25 17:02:25 2019, Marlène, GRIT, General, , Detectors numbering
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Fixed, , Tue Mar 12 10:21:17 2019, Marlène, MUST2, General, , Debug Calimero Y
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Debug of Calimero
test of channels (mate) masking : OK with DAS, OK with GECCO (see attachment) when done in the "disable channels" of GECCO
With calimero, when we are on Y, when we click right to mask a mate we see 'disable mate 2' instead of 'disable mate 10' !!! |
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Fixed, , Thu Apr 4 17:55:47 2019, Marlène, GRIT, General, , Scalers
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The scalers are
Scaler 1:
1-FAG
2-OR MUGAST
3-OR AGATA
4-OR VAMOS
5-
6-
7-100Hz pulser
8-DT n pulser 100Hz
9-OR BACK
10-OR MUST2
11-OR SQUARE
12-AGATA DIV
Scaler 2:
17-CATS1
18-CATS1 n FAG
19-CATS2 |
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Fixed, com2019, Fri Apr 5 00:47:16 2019, Marlène, OTHER, General, N/A, Game plan
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Fixed, e744s, Thu Apr 11 02:53:20 2019, Marlène, RUN, General, , TAc VAMOS-CATS
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Just before RUN 68
TAC VAMOS-CATS is now in TAC CATS1-CATS2 in order to check if we see something in the online spectra.
TCATS total delay = 300 + 500 ns=800 ns
TODO : put back the right ADC channel |
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Fixed, , Thu Apr 11 05:03:13 2019, Marlène, RUN, Hardware, CH2, TO DO list
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- 2 TACS are not working:
- T_Si_CATS1 (stop should be CATS n FAG --> to be checked)
- T_Si_VAMOS (seen now in T_CATS1_CATS2) --> check the signals (if CATS is the START we should use CATS n FAG, if it is the stop it should be delayed by 800 ns , the delay is prepared)
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Fixed, e744s, Thu Apr 11 18:08:12 2019, Marlène, OTHER, Hardware, , changes in the electronic
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| Valérian, Chloé and François wrote: | Changes made in the electronic during the break between 14N and 14O
1) T_VAMOS-CATS1
it was not connected. We added 500 ns delay in CATS1
2) T_CATS1_HF
range changed from 2µs to 200 ns |
T_VAMOS-CATS1 is now connected in T_CATS1_CATS2 as posted this night. We have tried to add 500ns more delay (800ns in total) to CATS and it did not work, so we suspected the TAC or ADC. This is why we inverted T_VAMOS-CATS1 with T_CATS1_CATS2. For this TAC, CATS is the START (and is not delayed by 500ns). |
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Fixed, e744s, Thu Apr 11 19:47:15 2019, Marlène, OFFLINE, General, , CATS charges in RUN76 and RUN77
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Offline analysis to reconstruct the charges in X and Y for CATS.
The charges are lower in RUN77 because bias was reduced to 580V.
Wires seem to be all OK. |
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Fixed, e744s, Fri Apr 12 08:19:31 2019, Marlène, OFFLINE, General, , CATS profiles RUN87
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Fixed, e744s, Fri Apr 12 09:25:10 2019, Marlène, ONLINE, General, , TAC
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Fixed, e744s, Mon Apr 15 09:59:32 2019, Marlène, RUN, General, CH2, change thresholds in DSSD MUST2 and suppression CsI
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From RUN126
change of MUST2 DSSD thresholds : thresholds are 583 keV now
change of CsI suppression : before it was suppressed up to 8210 now it is 8200 |
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Fixed, e744s, Tue Apr 16 11:01:04 2019, Marlène, RUN, General, , statistics on each target
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Cumulated statistics (evaluated from CATS trigger) on each target is :
-target #3 : 7.547e5 (x 30000)
-target #5 : 2.02e5 (x30000)
Up to now we have 3.7 time more with target #3 than target #5. |
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Fixed, e744s, Thu Apr 18 09:28:12 2019, Marlène, MUST2, General, 3-alpha, RUN 206 (mugast) 3Alpha calib after e744s experiment
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RUN 206
3 alpha source all detectors with no change in the configuration (low thresholds in MUST2)
From 17/04 18h13 -> 18/04 9h31 |
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Fixed, e786s, Fri May 31 09:53:14 2019, Marlène, GRIT, General, , Alpha source --> status of detectors
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MG3T has been fixed by changing the X kapton.
I have removed aluminium foil on square detectors, the noise is slightly higher.
MG4T is not working properly : noisy on X but no signal on Y !! I see no triggers on the Y side. I tried to increase bias but it did increase noise. I checked in the last calibration of e744 it was working properly. Also I had to do pedestal realignement for this detector because everything was shifted.
MG7T seem to be slightly different than before. Strips X are hidden from the trigger because it became suddenly noisy. |
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Fixed, e786s, Mon Jun 3 18:00:10 2019, Marlène, GRIT, General, , MUGAST detectors status --> MG4T
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The problem of MG4T ha sbeen solved by changing the feedthrough.
The pulser on Y was not working and we were seeing no events (no ORD) because there was a problem with the bias of board. The issue is due to the feedthrough.
So now MG4T (HT &BT) are plugged in a free feedthrough (below MG1T) and I see pulser signals on Y.
The bias seems to apply normally on all detectors (in the dark).
The pulser is seen on each boards.
I have put back aluminium foil on square but I could not test it. |
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Fixed, e786s, Mon Jun 24 03:08:49 2019, Marlène, RUN, General, Cryo-3He, Brho issue
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We observe a change in the Brho of VAMOS : the charged states are divided in 2 !!!
Édit: it is now understood as ice water cracking on the upstream of the target. |
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