 Tue Aug 10 12:22:56 2021, TD RSS, Tuesday 10 August 
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Attachments 1-3 - 2 of 4 SAES D2000 installed at same ports used for STFC DL XHV tests |
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Mon Aug 9 12:36:00 2021, TD, RSS, ABD, Monday 9 August 7x
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Attachments 1-5 - CARME shipment in CRYRING hall
XHV chambers nearest to YR09
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Mon Dec 7 14:29:12 2020, JM, CARME packing up
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Fri Dec 4 16:49:36 2020, TD, Friday 4 December 7x
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Wed Nov 25 10:39:37 2020, TD, Wednesday 25 November 7x
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10.39
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Tue Nov 24 12:24:01 2020, JM, RGA scans
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RGA laptop passcode: tw%11&STA-
RGA scans set up and plotting data as of 11:44
RGA is set to the multiplier mode (4.44e-8mbar) with an accuracy setting of 8, these are for the most sensitive scans. RGA is set to scan masses |
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Tue Nov 10 12:25:29 2020, JM, Cable harnesses
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The length of the wire needed was estimated with the aid of a scale image of the detectors in the CARME chamber and foam model pieces. Wire length estimated
by simply cutting wire so that it 'fits' the scale model and by taking coordinates of the end points of the longest sections of wire needed on
the model and calculating a bezier curve to estimate wire length. Bezier curve calculated by inputting the endpoints of the wire and control points such |
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Thu Oct 29 08:02:29 2020, CB, JM (remotely), CARME pressure
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Attached is the temperature plot for bakeout period including tags for NEG activation etc.
28 October -> 27 November
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Wed Oct 28 10:41:57 2020, TD, Wednesday 28 October 6x
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10.32
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Mon Oct 26 10:35:05 2020, JM, CB(remotely), Cooling
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10:10 Pressure on the chamber = 3.1e-8mbar. RE-72 temperatures are ~120-125C with set limits at 80C. D2000 temperatures are ~370C. D2000's reduced
from 60W to 30W and all UHV 1400s reduced to 50W each to cool both the chamber and the D2000s so that ion pumps can be activated.
10:38 Pressure on the chamber = 1.7e-9mbar. Re-72 temperatures begining to fall and are currently ~117-122C. D2000 temperatures are ~290C. |
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Thu Oct 22 22:15:00 2020, CB (remotely), Cooling down after first NEG activation 7x
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Thu 22 October
22:15 Temperatures stables, slowly decreasing.
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Thu Oct 22 10:39:40 2020, TD, Thursday 22 October 19x
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10.40
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Mon Oct 19 13:57:52 2020, JM, Neg Activation
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Neg and Neg-Ion pumps have been connected up to the control modules. Controller on the right is connected to the D-2000s. Middle controller is connected
to the wall section negs (1x2negs in series and 1x3negs in series) and the moving detector negs (2x2 negs in series). Left controller is connected
to the intermediate section negs (2x2 negs in series). Must connect IN/OUT interface on the back of the controller or the alarm for an open circuit is |
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Mon Oct 12 10:49:36 2020, JM, First Bakeout of CARME with pumps (cont)
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12 October
10:00 Bakeout temperatures stable. Pressure on the backing line is 3e-7mbar which is the lowest we have achieved on the backing line so far.
Vessel pressure can't be measured at the moment as temperature exceeds the max operational temperature of 80C. |
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Mon Oct 5 08:21:40 2020, CB (remotely), JM, First bake of CARME with pumps (cont.) 6x
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5 OCTOBER
08:21 Temperatures stable overnight. See attached. Baking continues.
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Wed Sep 30 08:10:36 2020, CB (remotely), First bake of CARME with pumps 19x
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(NOTE: Raspberry Pi internal clock appears to be on GMT, rather than GMT+1 due to daylight saving.)
Baking started on Mon 28 Sep. Due to WiFi connection authorisation expiring, no remote access was possible until
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Mon Sep 28 13:04:27 2020, JM, Baking
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I have (fingers crossed) got the baking stepping up nicely now. I have used some of the outer shell to act as a shield and to direct airflow towards
the front and back of the baking volume. I also moved the RE-72 thermocouples to a higher temperature region and replaced the broken thermocouples. The
program is on automatic mode and has currently stepped up to 40C with the max diff reduced to ~4C. |
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Sat Sep 26 09:31:46 2020, JM, CB (both remotely), Baking over weekend
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Sat 26 Sep
09:15 Baking started automatic mode
13:30 Baking continues, heating is slower than expected due to high chamber bottom temperatures |
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Fri Sep 25 12:58:33 2020, JM, Friday 25/09/20
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10:00 Vessel P = 3.99e-8 mbar, RGA P = 1.4e-6 mbar
10:54 Vessel P = 3.89e-8 mbar, RGA P = 1.4e-6 mbar
Vessel continues to pump down. Baking Jacket fully installed and testing of baking begins before leaving on automatic mode for the week. Some |
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Thu Sep 24 10:04:58 2020, JM, TD, Thursday 24 September
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Following overnight pumping by Leybold turbo pump
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