 Fri May 26 09:08:06 2023, JM, CB, Detector movement 
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Hopefully we will not be opening the chamber for quite some time so find attached images of all four installed detectors and a video of them both moving
into the beam axis for future reference |
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Thu Jul 13 00:12:19 2023, JM, CB, Bellow replaced
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The left (inside ring) bellow for the motors rod was replaced.
Replacing the bellow involved;
One person holding the metal plate the detectors are mounted on (cabling remains plugged in) while the operation is performed.
The |
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Thu Jul 13 00:12:45 2023, JM, CB, CARME closed
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The CARME chamber was closed and pushed back into position on the ring.
Prior to moving back onto the ring, the detectors were bias tested and the distance between the detectors was also checked using the motors.
Bias test was performed before the detector movement tests and before moving the chamber back onto the ring. |
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Fri Jan 5 12:29:10 2024, JM, CB, Further bias tests
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Biased detectors this morning to 150V, the leakage current for all detectors appears stable and is ~3.5 uA. We have also replaced the CAEN bias module
so that all channels are now functional. Detectors are connected as follows;
CHN0 -> Top left |
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Sun Jan 14 12:31:32 2024, JM, CB, FEE positions mac addresses
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*Updated following FEE changes. Correct as of 31/01/24
FEE modules are labelled according to the diagram in attachment. Note attachment is looking downstream. Each FEE module is also labelled with
its assigned number and whether it is a bias connection on the FEE holders. MAC addresses and FEE descriptions are as follows; |
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Thu Feb 1 10:04:11 2024, JM, CB, Shaping time testing 31x
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Arrived at the control room to find we had lost connection to the power relay. We rebooted the nnrpi1 and re-connected according to the steps laid out
in elog 471 -> all okay
11:00 Restarted daq with no changes to the system from yesterday. Bias consistent with previous days. All pulser peaks are slightly improved |
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Thu Feb 1 14:45:09 2024, JM, CB, NewMerger setup
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To include alll 16 FEE modules in the NewMerger we edited the file /MIDAS/DB/EXPERIMENTS/MERGE/Options/carme-gsi from MERGE.LinksAvailable string 5 to
MERGE.LinksAvailable string 15
We also edited the file /MIDAS/Linux/startup/NewMerger from ./master64 -i 8 -l 16 -p 11001 & to ./master64 -i 16 -l 16 -p 11001 |
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Sat Feb 17 06:19:27 2024, JM, CB, Run 35 - contd
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07:10
FEE temperatures OK
System checks OK |
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Sat Feb 17 13:21:44 2024, JM, CB, Beam on target - motors tests
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14:01
Run 36 started.
We put both detectors to the fully out position. Detectors then driven IN using the pnuematic motor only once the beam is ready and driven fully |
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Wed May 29 09:49:35 2024, JM, CB, Threshold changes / D+ beam
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09:00
R4 alpha background continues, currently R4_12
Temps OK, system checks unchanged from previous status (OK, aida16 clock and ADC issue) |
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Wed Jun 5 13:21:45 2024, JM, CB, Run 36 - pulser walkthrough
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14:00
Access to the cave as Nikos and Andreas have begun work on the target.
Run 36 started - pulser walkthrough. |
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Sun Jun 9 08:30:49 2024, JM, CB, Run 54 - beam on target 7x
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09:30
New run 54 with:
Electron cooler setpoint 244.1 V |
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Sun Jun 9 09:45:27 2024, JM, CB, Beam-Target Overlap
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Target density this morning had stabalised at 7e11 at/cm2
This is sufficient to test the beam/target overlap using the lifetime of the beam in the ring.
Previous attempt at this method was done at 1.5e11 at/cm2 where lifetime from residual gas and target are essentially the same. |
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Sat Jun 7 10:23:26 2025, JM, CB, carme-gsi rebooted
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10:00
The computer screen controlling the DAQ on carme-gsi appeared to have crashed.
Unable to move throught the different windows etc. |
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Thu Jun 12 14:08:42 2025, JM, CB, Run 72 - pulser walkthrough
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Pulser walkthrough conducted while the cave was open.
Pulser amplitudes 90000, 80000, 70000, 60000, 50000, 40000, 30000, 20000, 10000
DSSD4 was set to MEC and bias off as the detector had previously tripped. |
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Tue Feb 13 17:19:43 2024, JM, AR, NP, AB, RSS, Run22 - cooled beam on target (definitely maybe) 48x
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18:05 We believe we have an overlap between the beam and the target. Run 22 started.
CARME detectors in with the servo ONLY. Left arm pot 36.5 mm, right arm pot 37.7 mm
Target density apporx 2e11 atoms/cm2. |
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Fri Feb 9 17:04:39 2024, JM, AR, CB, NH, Run12 - Background
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Wed Feb 14 16:52:46 2024, JM, AR, CB, JG, Run28 - beam on target 42x
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Beam energy - 1.361 MeV/u
17:12 |
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Mon Jun 10 20:31:12 2024, JM, AK, EH, CB, Run 59 Beam on target 18x
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21:32
New run 59
Right arm at 64.60 mm |
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Sun Jun 2 13:04:41 2024, JM, AG, CB, DR, Run 23 - vertical beam position and beam lifetime tests
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14:05
Run 22 stopped. Run 23 started we will now adjust the vertical beam position to see if we observe the beam stripe seen in the last beamtime.
Current vertical beam position 0.0 mm. Horizontal beam position 7.0 mm. Coasting beam. |