 Thu Nov 18 12:29:50 2021, CB RSS, Conditioning D2000 NEGs 
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D2000 thermocouples report temperatures around 100C (D2000 #1,2) and 120C (3,4). 1,2 are in the intermediate chamber, 3,4 are behind the moving arms.
3 is directly being the detectors.
Wanted to flash ion elements in D2000, but SAES recommend >100C to flash. |
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Wed Nov 17 07:12:22 2021, RSS CB + ML (remotely), CARME baking with tape continues 17 Nov 7x
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CARME baking with heating tape continues
Left overnight at -
Ch1-3: 140 degrees |
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Tue Nov 16 12:05:13 2021, CB RSS, CARME baking with tape continues
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CARME baking with heating tape continues
Left overnight at 100C. Turned up this morning at 9:00 to 120C.
All good except detector strain relief seems to be going much higher than detector (no obvious reason) and then cool down. Proximity to flange |
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Fri Nov 12 08:54:11 2021, RSS ML + CB (remotely) NK AK NP, First CARME baking attempt
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07:50 Small leaks (near the motors and upper valve) were detected in the tent which were covered with Al foil.
08:10 ML changed the baking temperature to 120 degrees.
09:40 Since the bottom of CARME is cold, due to uneven distribution of heat, baking is stopped. |
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Thu Nov 11 11:44:58 2021, RSS + ML OG + CB (remotely), CARME baking started
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With the help of OG, the baking tent was built. MG started baking around 11:30 am with a rate of 0.2 K/minute.
Heating update can be found on: https://web-docs.gsi.de/~lestinsk/baking.php (CARME temperature plot now visible as well - thanks Michael!)
where, device - 192.168.207.192 is for CARME. |
 Thu Nov 11 14:01:00 2021, AK, ML, Heater channel layouts
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Schematic layout of heaters and channel assignment attached. Table kindly provided by AK. I hope the conversion from excel to pdf didn't swallow
any important information. |
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Wed Nov 10 18:38:16 2021, RSS TD + ML OG AK NK, CARME wrapped in heating tape
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Heating and electronic experts were in CRYRING and were unhappy with the damaged wire. Heaters were opened by OG, but no damage was found. It is suggested
to replace the entire wire and then get it approved by the concerned authority.
To avoid further delays, ML and TD agreed on heating tapes/wires covering the chamber. OG helped in wrapping the heating wire around. Tent is |
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Wed Nov 10 18:24:12 2021, RSS, Thermocouple labelling
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1. Detector
2. Chamber back
3. Strain relief |
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Wed Nov 10 14:41:12 2021, TD RSS + CB (remotely), Wrapping CARME in heating tape
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ML reports that baking of the upstream section (gas jet interaction chamber plus e-target) has commenced - initially to 50 deg C to check thermocouples.
If OK baking
temperature will be ramped slowly (which I think means c. 10 deg C per h) to limits established for specific components by the e-target.
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Tue Nov 9 15:03:29 2021, RSS + OG, Burnt cables issues 7x
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Upper part of the frame was mounted. In order to do so, the valve was closed, turbo wire and hose were disconnected and then connected. Valve was opened
again. See pictures 1-2.
Bottom part of the tent was constructed with 3 heaters (from one of the controllers) at the front, 4 in the middle, and 4 at the back (4+4 from |
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Mon Nov 8 17:19:02 2021, RSS + OG, Neg and ion cables connected
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Neg and ion pump cables were labeled and connected.
Kapton tape wrapped around the neg cable connectors for the strain support.
Lower frame mounted. |
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Sat Nov 6 14:21:10 2021, CB RSS, Preparation for bakeout tent mounting + to do for next week
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Connected pneumatic hoses prepared by Gleb. Opened flow to pressure reducer set at 2 bar. Ok. Attempted to operate pneumatic motors. Somehow left / right
pneumatic motors controls swapped around! Works fine otherwise. Most likely hardware issue, i.e. hoses are inverted inside motor box. Software fix possible
in principle. Probably easiest to swap hoses going out from motor box (top to bottom and vice versa). Could not pull out hoses after installing. To do |
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Fri Nov 5 12:27:11 2021, CB RSS + DR NP ML US, First pump down of YR09
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Tightened all flanges.
Added Pirani gauge and third IE514 to interaction chamber.
Stated pump down. Around 100 mbar on Interaction chamber Pirani gauge very loud metallic noise is heard. Found bellows between CARME and interaction |
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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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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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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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Mon Nov 1 14:48:16 2021, CB + ML DR, CARME opened
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Confirmed leak as per previous Elog.
Tightened to 100 Nm - no effects.
Tightened to 130 Nm - bottom leak disappeared. Top leak still at 1.3E-8 mbar l second. |
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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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Sun Oct 31 08:05:15 2021, CB OH + DR ML, CARME closed again + feedthroughs labeled 11x
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(Fri 29 October)
Cleaned wire seal recess and labeled thermocouples and flanges to identify p-n vs. n-n side and ports with bias pin. See attached in case baking
damages the label. |
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Sun Oct 31 07:55:39 2021, CB JM + OH, Strain relief mounted
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(Thu 28 October)
All strain relief extension plates mounted behind the wires, using SS countersunk bolts (not silver plated).
Inserting bottom part of MACOR strain relief causes wires to bend too much with strain placed on DSSD. No reasonable way to proceed like that. |
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Sun Oct 31 07:41:20 2021, CB JM + RSS, Wires plugged in DSSDs 8x
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(Wed 27 October)
Started with top-most flange. Attemptedto plug in MACOR lead in DSSD plug in preparation for jacking in. Realised that extender plate thickness
causes plug to be rasied with respect to nominal position, which results in plug non entering straight. Removed extension plate. |