 Sat Sep 2 10:04:55 2023, CB, Turbo GV closed
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Found CARME in XHV at 1.1E-11 mbar. Chamber temperature around 30C cooling slowly.
Closed GV to top turbo. Pressure goes up but appears to recover around 2.5E-11 mbar, on line with several previous observations that sectioning
off the turbo results in a higher reading in the IE514. |
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Fri Sep 1 08:11:40 2023, CB, NEG activation - 2
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9:10 Set heaters temperature 300 -> 250 C in preparation for cooling down and to help keep DSSD temperature down. Started activating set 6 (3 X DSSD)
at 120 W as per previous procedure.
9:15 Realised previous choice is a mistake in the current configuration as the DSSD TC is closer to set 5. Set 6 off. Set 5 to 60W. No effects |
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Thu Aug 31 08:36:34 2023, CB, NEG activation
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Found CARME at 50C, a bit cooler than expected, probably due to invasive tent changes yesterday to mount missing wires. Increased heaters temperature
to 300C
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Wed Aug 30 10:28:36 2023, CB, Preparing for pumps on
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We need to connect the non-bakeable (max 80C) wire of the ion pump belonging to the vacuum division, and we also need to connect the two newly-repaired
NEG cables to the D2000 modules. That requires partly opening the tent to gain access.
Set heaters temperature from 450 C -> 400 C - CARME floating TC temperature goes from ~98 C to ~88C. |
Wed Aug 30 09:33:13 2023, CB, OG, NEG cables repaired 
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Repaired Neg wires for D2000 with Oemer's help.
Cable #2 is fine.
In Cable #4, wires 1 and 2 are swapped but it's impossible this happened when the connector came apart. The pins are crimped and secured |
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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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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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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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Thu Aug 10 07:51:43 2023, JM, Baking tent and heater testing 8x
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09/08/23
Attached is the current pumpdown plot taken from grafana.
I have started to re-work the baking tent in order to close gaps from its initial installation. The heaters work and were tested to a temperature |
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Thu Jul 27 09:43:56 2023, RSS, Thermocouples connected -2
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10:30 IE514 1.80e-08mbar
Most of the CARME is covered by the baking tent. The tent needs to be closed and a bit covered from the front
(upstream), end (downstream), and bottom side. TCs are labeled with a marker in the sequence 1-1 to 2-8.
1-1 Internal TC 1
1-2 Internal TC 2
1-3 Internal TC 3
1-4 CARME front top
1-5 CARME front bottom
1-6 Top hanging middle
1-7 CARME middle |
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Wed Jul 26 08:28:09 2023, RSS, Building tent
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09:26 IE514 1.96e-08mbar |
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Tue Jul 25 09:12:15 2023, RSS, Building tent
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10:10 IE514 2.0e-08mbar
Upstream part of the CARME is covered. |
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Mon Jul 24 10:40:14 2023, RSS, TD, Pump down continues
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11.40 Pirani 1.00e-3 mbar IE514 2.23e-08mbar
15.15 7d/24h vacuum plots |
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Sun Jul 23 10:13:48 2023, RSS, TD, Building tent
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11.15 Pirani 1.0e-03mbar IE514 2.72e-08mbar
16.35 Pirani 1.0e-03mbar IE514 2.61e-08mbar |
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Sat Jul 22 09:19:59 2023, RSS, TD, Thermocouples connected 10x
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10.20 Pirani 1e-03mbar IE514 3.26e-08mbar
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Fri Jul 21 08:21:54 2023, TD, RSS, Baking tent manual
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09.20 Pirani 1.00e-3 mbar IE514 3.90e-8 mbar
Today - install TCs, connect to Pico controller and test
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Thu Jul 20 08:29:26 2023, TD, Installing tent. Two NEG power cable broken. 11x
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09.28 Pirani 1.00e-3 mbar IE514 5.45e-8 mbar
12.10 Bakeout tent frame installed
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Wed Jul 19 08:17:26 2023, TD, Leak testing
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09.16 Pirani 1.00e-3 mbar IE514 8.77e-8 mbar
Leak tester c. 5e-12 mbar.l/s (leak tester valved off)
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Tue Jul 18 08:16:28 2023, TD, Pumping down. Issues found with one detector.
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09.15 Following overnight pumping of CARME chamber by Leybold turbo
Pirani 1.00e-3 mbar IE514 2.83e-7 mbar
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Mon Jul 17 08:45:11 2023, TD, Closing CARME again
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Grosmantage are scheduled to arrive 10.00 to inspect COF600 seals and their fit to the COF600 flange. They may decide to adjust the seals so that they
fit the flange
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