Lifted CARME off the floor and mounted feet on sides. It was found impossible to put four bolts for each foot
due to alignment conflict. Three bolts were mounted per foot instead.

One of the mounting holes in CARME has been damaged and the thread has been ruined. Simple rethreading attempts
failed. Three good holes left - not an issue for now.

One of the shims between the feet and the chamber had to be modified in the workshop. Some feet were rather
difficult to mount, but in the end we succedeed.

CARME was then lifted on the Al frame and gently dropped. The crane remains in place overnight to prevent it
falling over given it is not anchored to the floor.

Front foot and back foot were also mounted. 

Elbows at the back were mounted.

Currently considering whether to mount gate valves before or after lifting in place on YR09. Lift experts will
decide tomorrow what is the easiest procedure given constraints on the ring.

See other attachment and next entry for current status.


YR09 downstream will be cleared tomorrow morning. Lift will proceed tomorrow afternoon.

15:20

DAQ stopped

Merger & Tape Server stopped

FEEs off

All detectors off

Leakage current plot attached

Leakage current file moved to /TapeData/

Will restart for a long background when the next experiment is over.

08:07 CEST

Temperatures ok - attached

DSSDs on. Leakage currents still high. - attached

If ML & co cannot find the reason, will turn off FEEs later today

FEEs turned off, leakage current still high (DSSD off now). 

Motors out. 

Lifted CARME with Al support on the 
CRYRING. No issues during transportation. 

Drilled new holes in the Al feet to fit 
elephant feet. Unclear if the issue is 
with the model, the frame or the feet 
themselves. In any case this issue is 
sorted.

CARME was designed to interface with the 
CRYRING via the cross section with pumps 
and sensors that we decided dismount. To 
replace this section a length of xhv 
tubing and a bellow will be employed. 
Prepared today, to be mounted tomorrow.

Aligned CARME height with beam height. 
This posed issues due to difficulty to 
adjust bolts under the cross members used 
to support the motors. See previous log 
entry.

Bolts under those cross members are now 
only finger tight. Unclear whether the 
CARME section will drop slightly if 
disconnected from main body. It's the 
section housing the moving Dssds. May be 
an issue for tightening it back. Will 
investigate.

Gate valves and supports to be installed 
tomorrow morning.

measurement 1 -string
intermediate (smaller) chamber - 2144 (mm) circumference,  measured half circumference 1072 mm 
outer (larger) chamber - 2160 (mm) circumference, measured 1/4 circumference 540mm

measurement 2 - foil tape
intermediate (smaller) chamber - 2156 (mm) circumference,  measured half circumference 1078 mm 
outer (larger) chamber - 2172 (mm) circumference, measured 1/4 circumference 543mm

Difference from centre to flat surface on outer chamber is 344 mm on drawing -> say 346 mm radius -> 2174 mm circumference
Part 620FBM600 from pfeiffer intermediate chamber 690mm diameter, 2168mm 

Measurements of parts of CARME frame to the target frame as a reference for target frame position.

Attachments 3+4 show clearance between CARME frame and target frame just below interaction chamber from inside and outside of the ring. Attachment 5 is clearance in same section but above interaction chamber

Attachment 6 - measurement between outer edge of CARME frame and inner edge of target frame - 165mm

Attachment 7 - measurements between outer edge of CARME frame and inner edge of target frame - 455 mm 

Attachment 8 - measurement between lower edge of CARME frame and lower edge of target frame - 1245 mm

Attachment 9 - measurement between top of VAT valve and lower edge of target frame - 233mm (left arrow), 216mm (right arrow)

On 21/9/21 CARME was connected to the leak tester. Leak testing showed no apparent leaks, extra time required to reach <1e-4 mbar during initial turbo pumpdown might be due to outgassing from additional installed components on the chamber. Turbo pump restarted 

21/9/21 16:28    9.73e-7 mbar

21/9/21 16:48     8.92e-7 mbar

21/9/21  17:28    7.88e-7 mbar

elog 74 contains the pressure taken every hour after this point from the webcam. 

NEG and NEG-ion cables for controller modules connected to feedthroughs on the CARME chamber. Feedthroughs have been electrically checked and are OK.

CARME baking jacket constructed around chamber. Thermocouples in place around the chamber. Vacuum group are coming tomorrow morning to inspect and de-gas installed gauge, after they are finished we mount final pieces of baking jacket and begin baking.  

Ion pump, RGA and additional gauge installed on the chamber.

Our gauge is the one mounted above the NEG feedthrough, Michael's gauge is mounted below the feedthrough. Ion pump too large to install on the top of the vessel, sufficient room on flange immediately next to this top flange.  

Baking frame assembled around chamber, all required components fit within the baking volume. Insulation on baking tray and heaters set up and connected to pi controller. 

Pumpdown begun at 16:30. Turbopump on at 16:40. Unable to reach the required pressure for the hot cathod gauge before leaving the lab ~18:10. Suggests possible leak, pressure and leak check tomorrow morning.

MACOR strain relief and plastic strain relief tested in edinburgh compared (see image). MACRO hole size is 2x bigger than the test piece, suggests mix up between radius and diameter for MACOR strain reliefs. 

Vacuum group confirmed temperature limits for the RGA of 200°C without the electronics removed and 80°C with electronics installed.

CARME reached 9E-12 this morning

Ion pumps on
No change in pressure.

Gate valve closed. Turbo sectioned off.

Pressure spikes (normal). Waiting for it 
to recover.

Will try to get rga operational later 
today.

There was some tidying up of the CRYRING hall in advance of this week's EC evaluation meeting at GSI.

CARME equipment stored in central area of the CRYRING hall has been moved to the roof storage area near rooms 2.033/4 and a cupboard near the main entrance to the CRYRING 
hall - attachments 1-2.

Please contact Davide Racano for further information.

Disconnected cables from CARME motors and turbo. The turbo has to go to allow Carme to slide out. Crane may be required to lift because it's in a very hard spot to access.

Dolly mostly built. See attached. Left side doesn't quite fit right by 1-2 mm. Might be okay anyway but will put some shims to avoid any shaking during sliding.

Waiting for the rails to arrive due to GSI procurement issues.

Plan to mount new feet and bellow support tomorrow.

Also plan to split CARME at the smaller flange towards the interaction chamber, after the bellows and before the bellows towards the magnet on the downstream side.

Connected CARME to the CRYRING via tube 
plus bellows. See attach.

Had to lift CARME slightly wrt yesterday 
beam alignment to get a straight tube.

FEE64

#1 - #16 -> aida01 - aida16

Network configuration - /etc/dhcpd/dhcpd.conf - attachment 1

MIDAS Options

Added Options sub-directories for aida09-aida16 - attachment 2

MIDAS ASIC settings

Added sub-directories for aida09-aida16 - attachment 3

MIDAS configuration - /MIDAS/config/TclHttpd/carme-gsi"8015 - attachment 4
Currently only aida01-aida08 defined

MIDAS embedded rfs filesystems for aida01-aida24 alreday exist - attachment 5

All FEE64s connected to rev B CARME adaptor PCBs
LK1 fitted to n+n bias FEE64 ( aidaxx, aidaxx, aidaxx, aidaxx )
No other LKs fitted


MACB

WR source NIM WR emulator or VETAR2

See https://elog.ph.ed.ac.uk/DESPEC/517 for MACB mode configuration


CAEN N1419ET


EG&G Ortec 448 Pulser


ASIC settings


Options

(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.

Grossmontage insisted to clean wire seal once more to remove black stains noticed when opening. Kapton vapour condensation could be possible cause. They used special cleaning product from XHV (not sure what - acetone mix with something?)

Lifted CARME back. Inserted wire seal. Closed chamber. Step is noted between central CARME section and other two - it's normal. Noted some damage to SS vessel on the outside. Unclear what could have caused it but it's only cosmetic.

Wire seal tightened with 20 - 40 - 60 - 80 - 80 Nm turns starting from top and proceeding in a circle. Had to temporarily dismount on foot to make space for torque wrench. Also had to saw off front part of ratchet attachmnent to slide wrench between GSI ion pump and flange. All other flanges closed by Grossmontage. Pump down started.

The CARME chamber was closed and pushed back into position on the ring. 

Prior to moving back onto the ring, the detectors were bias tested and the distance between the detectors was also checked using the motors. Bias test was performed before the detector movement tests and before moving the chamber back onto the ring.  

Attached images shows the separation between the detectors when moved in togther. Separation is < 10 mm. Motors logs will be checked to place safety limits on the movement.

The chamber was pumped down. At 2 mbar the turbo was turned on, but the pressure would not decrease below 1e-2 mbar. The turbo was switched off and the pressure increased to 2 mbar. Isopropanol was sprayed on the wire seal causing an increase in the pressure. Leak on the wire seal. 

CARME baking with heating tape continues

Left overnight at -

Ch1-3: 140 degrees

Ch5-6: 150 degrees

Ch8:    100 degrees

07:50 - Increased channels 1-3 to 150, channels 5 and 6 to 160, and channel 8 remain at 100. For the gas jet target, channel 2 increased to 150.

12:39 - Increased channels 5 and 6 to 170 C. All of CARME is >100 C except "Magnet Pipe" that is at 95 (probably OK given proximity to gate valve). 

13:40 - Decreased channel 5 to 160 C. Bottom back of CARME was going up, but rest of chamber was not following along. Thermal gradients were getting excessive.

15:10 - Checked Kapton wire specs from Allectra. Max temperature of 311-KAPM-060 is 260 C in a vacuum not 160 C as erroneously remembered. Increased Ch 1 2 3 to 160 and channel 5 to 170. Planning on leaving until weekend.

Progress can be followed on

http://web-docs.gsi.de/~lestinsk/baking.php

http://web-docs.gsi.de/~lestinsk/vacplot.php

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 / heating tape likely. One potential solution would be to push the motor in, putting some distance between detector / strain relief and outside flange.

13:30 - Increased channel 1 to 130 (long tape) and channels 5 and 6 to 140 (bottom flange heaters). Left rest as was.

15:20 - Increased channel 2 and 3 to 130. No obvious effects except Magnet pipe goes up

16:00 - Increased channel 1, 2, 3 to 140. Increased channels 5 and 6 to 150 C.

Progress can be followed on

http://web-docs.gsi.de/~lestinsk/baking.php

http://web-docs.gsi.de/~lestinsk/vacplot.php

Current temperature ~130 C, was set to 130 C on manual mode around 10:00 am
See plot and screen attached.

Current pressure ~1.37E-6 mbar
See
https://uoe-my.sharepoint.com/:x:/g/personal/cbruno2_ed_ac_uk/EVbsVOubNHRLj0PKiFIvd00BClMJ6WSJ1UDAyLA2F3R4jA?rtime=OK4kVZKB2Ug
http://web-docs.gsi.de/~lestinsk/vacplot.php

Current temperature ~120 C, increasing
See plot and screen attached.

Current pressure ~1.07E-6 mbar
See
https://uoe-my.sharepoint.com/:x:/g/personal/cbruno2_ed_ac_uk/EVbsVOubNHRLj0PKiFIvd00BClMJ6WSJ1UDAyLA2F3R4jA?rtime=OK4kVZKB2Ug
http://web-docs.gsi.de/~lestinsk/vacplot.php

Current temperature ~87 C, increasing
See plot and screen attached.
Thermocouple on CARME foot side (1-4) may have come loose judging from sudden jump in temperature at 14:30?
Improvement to blanket seem to have significant effect.

Current pressure ~3.5E-8 increasing
See
https://uoe-my.sharepoint.com/:x:/g/personal/cbruno2_ed_ac_uk/EVbsVOubNHRLj0PKiFIvd00BClMJ6WSJ1UDAyLA2F3R4jA?rtime=OK4kVZKB2Ug
http://web-docs.gsi.de/~lestinsk/vacplot.php