 Sun Oct 31 13:55:13 2021, CB OH, Leak tests 
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Found CARME at 2E-7.
Closed valve on top of roughing pump. Clamp was not tight. Pressure still good.
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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 4 17:08:08 2023, JM, Leak test and venting
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This morning the pressure achieved was 1.44E-7 mbar. Leak testing showed an overall leak rate of 1.5E-10 mbar l/s, this is below the previous leak rate
but still significantly above the leak rate from elog 141 of the CARME chamber on its own. Spraying helium, a leak is visible on the VAT gate valve on
the interaction chamber (inside of the ring). The leak rate increases to ~2.3E-10 mbar l/s. No increase in the leak rate was observed elsewhere on CARME |
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Fri Sep 10 18:09:14 2021, CB RSS ML, Leak test + baking system test
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Leak tested CARME via He leak tester + He
bottle. No leaks could be found. Some
indication of potential leak close to
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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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Wed Nov 3 11:18:11 2021, CB RSS + DR NK ML, Leak closed
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Found CARME at 1.0E-6 mbar. Beginning leak test.
Found leaks in the same location as before. Roughly 1~3E-8 mbar l second vs. base leak of 1E-12 |
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Wed Mar 2 22:29:48 2022, CB, SD, Last shift with beam 9x
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22:30 Shift handed over. DAQ OK. Target OK. Beam OK.
00:22 Temperatures OK |
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Tue Aug 31 11:55:11 2021, CB RSS, Last preparations for CARME lift
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Found strut bolts in the bag with
spherical washers. Mounted the struts and
the washers. See attach 1.
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Fri Sep 3 15:55:00 2021, CB RSS, Issues with cable clamps
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Attempted to mount cable clamps for strain
relief on inner part of Allectra
feedthroughs.
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Tue Nov 2 12:45:36 2021, CB + DR NK, Issues with CARME feet
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Attempted to close CARME as carefully as possible.
Swapped out one foot for another one and temporarily removed a second to allow CARME to rotate slightly and get a better alignment of the two
surfaces of the COF600 flange. |
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Fri Sep 3 08:14:51 2021, CB RSS, Issues foreseeable splitting CARME 7x
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In order to install the detector supports
and eventually install the detectors
themselves CARME must be split and
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Wed Nov 24 12:08:08 2021, CB + ML OG, Ion pumps on
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Found SIP power unit for D2000 #4 not functioning correctly. Max current regardless of ion element connected to.
ML kindly loaned a spare. All D2000 work Ok now. Will have to send faulty unit for repairs back to SAES. |
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Tue May 27 12:49:48 2025, ML, Ion beam / electron beam settings so far.
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| Screenshots and ParamModi settings export attached. |
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Wed Mar 2 01:24:48 2022, David, George, Ion Source Update
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02:25
Zoran was unable to ignite the ion source.
He has given some parameters to the control room so they can wiggle stuff around and try and ignite it. |
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Sat Jan 15 11:28:10 2022, JM, Inventory
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Vaccum
DN250CF 1x gaskets
DN200CF 5x gaskets
DN160CF 1x gaskets, 2x blank flanges
DN100CF 69x gaskets, 19x blank flanges, 14
double feedthroughs (1 damaged)
DN63CF 3x gaskets, 2x blank flanges
DN300CF 5x gaskets
DN350CF 0x gaskets
1X WIRE SEAL
DN35CF 3x gaskets, 13 |
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Wed Nov 3 16:39:01 2021, CB RSS + NP DR NK ML, Interaction chamber lifted in place
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Prepared to move interaction chamber in place. Ok CARME side, flange has M10 bolts. On interaction chamber side i.e. bellows it has M8 bolts.
DS designed this to have loose fit under assumption of M10 side actually being 3/8 holes i.e. 9.9 mm. However holes are 10.2 mm. Furthermore
Grossmontage suggest loose fit will be damaged in baking in the long term. |
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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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Thu Feb 24 05:09:47 2022, CB, PE, EM, Inlet valve at target closed + problems with turbopump
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The turbo pump E1 is continuing to draw too much current and the rotation frequency has steadily decreased from 817 Hz at the beginning of the night
shift to 800 Hz now. The frequency recovered after the temperature was increased.
Both of the valves (inlet and dump) have been closed to improve the vacuum in the ring. |
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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 Feb 21 18:03:58 2022, SHB, JM, CB, OH (remotely), Info: signals on ion intensity for experiment
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Currently 4 possibilities to have a look at the beam, all of them are OK to check whether there is beam or not, but some of them are better for checking
absolute values.
- Schottky RF signal |