 Mon Jan 8 19:27:36 2024, CB, JM, Leak current tests overnight 
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| Left bias in overnight. Leakage current decreased and stabilised. See attached. Bias off as we prepare to mount the fees. |
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Sun Jan 7 15:38:57 2024, CB, JM, Manifolds mostly assembled + bias overnight check
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Assembled most of the connectors on the new (green) manifolds. Two blanking pulgs stuck when mounting - cannot remove them or tighten them. Swarf? Will
ask Davide's help tomorrow. Cannot use the manifold until this is fixed.
Checked FEE assembly in cassette. Need to shorten black Delrin supports by ~6 mm. Holes should end up in the correct position thanks to rails |
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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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Thu Jan 4 13:15:10 2024, CB, JM, Tent removed - bias test
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Removed tent, octagon, Neg cables.
Disconnected and removed Baking Pi, TC08, thermocouples.
Tested new rails, plates, fees - it fits. Need to check on the flange next. |
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Wed Oct 18 16:47:36 2023, JG, CB, Power outage
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Local power outage at the CRYRING today, while JG was trying to activate the ion pumps. Unlcear what caused it.
Valve on scroll worked as intended, but CARME reacehd 1E-7 mbar from turbo (?) venting.
Power restored. Pressure back in the 1E-11 mbar range, decreasing. |
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Tue Oct 17 08:43:47 2023, CB, NEG activation -2
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09:40 - Found temperature and pressure stablised, but too high to comfortably activate NEGs closest to detectors. Detector temperature around 90C. This
was expected. Ramped down UHV1400 #1,2,3,4 to P=50W (200C?). Ramped down heaters to 100, 80, 100C. Ramped down heating jacket to 60C.
10:00 - Activated set #5 (x2) at 80W tramp=30, thold=infinity; set#6 (x3) at 120W rest as #5. This is different from previous procedure because |
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Mon Oct 16 08:28:02 2023, CB, NEG activation -1
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9:00 - Michael's online vacuum pressure plot is no longer working - an old image is being displayed. CARME temperatures around 80-85C. Lowered heater
temperatures to 150, 100, 150 C for safety. Lowered jacket temperature to 80C
9:15 - Flashed ion pumps several times. Small pressure increase, up to ~7E-9 but not macroscopic |
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Sun Oct 15 09:35:03 2023, CB, Starting ramp down
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10:40 - Status as attached. Heaters setpoint/read at 250 C, 150 C, 225 C. Power stable at 53%, 41%, 63%
10:45 - Informed HKR ramp down / pump activation is starting for CARME only. Setpoints to 200, 125, 200 C. Monitoring slow ramp down.
14:10 - Heater temperatures reached the set points. Power stabilising. CARME internals temperature dropped to around 100 C and still falling. |
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Tue Oct 3 08:48:36 2023, TD, Tuesday 3 October
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09.40 CARME IE514 1.79e-8 mbar, ambient temperature 20.7 deg C
CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 1-3
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Mon Oct 2 08:41:43 2023, TD, Monday 2 October 6x
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09.35 CARME IE514 1.95e-8 mbar, ambient temperature 20.8 deg C
CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 1-3
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Sun Oct 1 10:24:50 2023, TD, Sunday 1 October 12x
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11.20 CARME IE514 3.53e-9 mbar, ambient temperature 20.6 deg C
CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 1-3
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Sat Sep 30 10:58:14 2023, TD, Saturday 30 September 9x
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10.50 CARME IE514 7.14e-10 mbar, ambient temperature 20.8 deg C
CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 1-3
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Fri Sep 29 08:54:29 2023, TD, Friday 29 September 11x
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09.50 CARME IE514 9.0e-11 mbar, ambient temperature 21.3 deg C
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Thu Sep 28 09:19:50 2023, TD, Thursday 28 September
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10.20 CARME IE514 8.6e-11 mbar
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Wed Sep 27 15:56:41 2023, TD, Wednesday 27 September
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16.55 CARME IE514 8.2e-11 mbar
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Tue Sep 26 10:13:14 2023, TD, ELOTECH PID Temperature Controller R4000 manual ( German and English )
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Tue Sep 26 08:08:42 2023, TD, Tuesday 26 September 7x
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09.07 IE514 pressure 6.4e-11 mbar, ambient temperature +20.3 deg C
Using appc218 ( account carme ) workstation by the CARME 19" rack
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Mon Sep 25 16:33:32 2023, TD, Removed tape from heaters TC
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17.33 IE514 pressure 6.4e-11 mbar, ambient temperature +20.8 deg C
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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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Wed Sep 13 15:00:39 2023, ML, Vacuum and Heater temperature plots from Grafana
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Attached are the plotted curves from vacuum and heater temperature (actual and set values from ISOHEAT controllers) during the bakeout process. Channel
assignment as per post 433. |