 Sat Aug 12 11:57:51 2023, JM, Updated thermocouple positions and heater channel layouts 6x
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Heater channel layouts for the interaction chamber and carme in attached documents.
Updated thermocouple positions; (front section is closest to gas-target, rear section is moving detector end)
1-1 Internal TC 1
1-2 Internal TC 2
1-3 Internal TC 3
1-4 CARME - top of the front section
1-5 |
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Sat Aug 12 15:06:51 2023, JM, Initial bakeout tests
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12/08/23
Baking testing. Aim to find relationship between heater temperature setpoint and the temperature of the chamber and floating temperature in the
baking volume. Behaviour of the heater tempertures and ability to control the heating is also required. Ambient chamber temperature ~22 C. Interaction |
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Mon Aug 14 09:22:56 2023, JM, Bakeout
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14/08/23
Temperature in the baking volume is ~ 42 C and the pressure is 4.6e-8 mbar. Current heaters set point is 135 C. This will now be increased to
200 C to start increasing the baking temperature more significantly. |
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Fri Sep 22 12:35:46 2023, JM, Bakeout plots
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Attached are plots for the previous bakeout of CARME which may aid in the bakeout to come in the following week.
Plots relate the heater temperatures and heater powers with the chamber temperature (internal floating thermocouple) and pressure inside CARME. |
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Thu Feb 8 11:22:28 2024, JM, Shifters instruction 2024
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EMERGENCY SHUTDOWNS
1. CARME motors: Q key on keyboard while on workspace 1 of appc218 (right of this double-monitor setup)
2. Internal target: |
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Tue Feb 20 07:50:10 2024, JM, DAQ restart
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DAQ restarted. Run46. All appears OK, aida01 shows high rates across ASIC 4 even with no beam which could not be resolved via ASIC control. May suggest
some damge.
Merger is running and tape server is writing data to disk. Data rate is about 1300 kB/sec from 800 kb/sec due to increase in aida01 rate. |
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Tue Feb 20 09:51:37 2024, JM, Run 48 beam on target
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| Run 48 started |
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Tue Feb 20 14:12:32 2024, JM, Shutdown
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CARME DAQ shutdown. FEEs turned OFF and all MIDAS server windows closed.
Detector bias turned OFF.
Final leakage current plot - attachment 1 |
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Mon May 27 15:25:08 2024, JM, Startup
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27/05/24
The carme-gsi computer has been moved from the server room into the shifter control room.
Startup of the DAQ looks OK. Settings loaded 2024Apr24 |
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Wed May 29 08:10:32 2024, JM, Run4 - alpha background
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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 13:34:02 2024, JM, Run 37 - Change in thresholds
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14:20
Target nozzle currently being replaced. No beam
We have decided to switch to 15N beam from now on. |
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Mon Jun 10 18:22:47 2024, JM, Electron cooler calculations
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Ion beam energy is calculated using Beamcalc (https://web-docs.gsi.de/~lestinsk/beamcalc/electron.php)
Electron current is set to 4.3 mA and can be taken from Grafana
Alpha factor is 50 |
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Tue Jun 11 20:10:25 2024, JM, Run 63 - Beam only background
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21:00
Claude has achieved optimal cooling parameters for the beam
No target and internal work inside the cave tomorrow is required |
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Fri Jun 14 14:52:02 2024, JM, Beam-Target Overlap Scan
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The orbit of the beam in the ring was re-configured so that the beam position is more central.
With the target density at ~6e11 at/cm2 this allowed a target overlap scan using the beam lifetime to be performed.
Beam put into bunched mode to allow the number of particles to be observed on Grafana. |
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Sun Jun 16 22:40:11 2024, JM, Target overlap test - R81
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23:10
Beam set to bunched mode to observe beam lifetime.
Electron cooler voltage setpoint kept at 246.8 V. Note this is 0.5 V lower than the previous test where the setpoint was 247.3 V |
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Sun Jun 16 22:49:22 2024, JM, Run 82
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23:38
Cooler voltage setpoint 247.5 V.
FC20 read value 246.95 V. |
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Mon Jun 17 00:05:13 2024, JM, Run 83
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01:00
Cooler voltage setpoint 247.6 V.
FC20 read value 247.05 V. |
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Mon Jun 17 02:05:37 2024, JM, Run 84
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03:00
Cooler voltage setpoint 247.7 V.
FC20 read value 247.15 V. |
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Mon Jun 17 04:01:16 2024, JM, Run 85
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05:00
Cooler voltage setpoint 247.45 V.
FC20 read value 246.9 V. |
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Mon Jun 17 05:47:35 2024, JM, Run 86
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06:50
No sign of the resonance during night shift. New run started but when operators are avaiable we will likely move to higher energies to try and
observe the (p,a) reaction. |