Looking downstream the RHS motor assembly has  loose green/yellow (gnd?) see attachment 1

Install blank base plate to trial install in downstream CARME chamber. The rod is just through all of the mounting holes - see attachments 2 & 3

The rod, plate and block are close fitting.

The current position of the TC feedthrough is incompatible wit detector movement- the TC feedthrough should be moved.

Detector baseplate with 1x DSSSD installed - attachments 4 - 6, Cabling length looks OK. 

Should move NEG power and TCs to top & bottom DN40 flanges to avoid conflicts with DSSSDs and cabling.

One of the detectors was damaged while mounting (see pictures 1-3).

Second detector was found already damaged when opened (see pictures 4-5).

Ring seal is out. See picture 1.

Bellow (towards CARME) was installed in the gas jet chamber. Attached are some pictures.

Attachment 1 - what is function of the 4x c/s holes indicated?


DSSSD install sequence

1 add 136 - 2x78 way cable harnesses to DSSSD mount via strain relief

2 add DSSSD to mount

3 connect 136 D connector

4 install in CARME chamber 

5 connect 2x78 D connectors and strain relief to 2x78 way D connector 
feedthroughs 

Attachment 2- pins of one of the four feedthroughs were damaged. Needs to be replaced.

Split funnels installed on 4 (of 8) 2x78 way D connector feed-throughs.

Looking downstream

Attachment 1 top right pair
           2 bottom right pair
           3 bottom left pair
           4 top left pair

PB "The long sides of the connectors on the 2 lowest flanges should be next to each other
and the short side of the connectors should be towards the motors."

The orientations of the other flanges do not matter.

'Long' cables to L-R connectors, 'short' cables to U-D connectors.

RSS & TD had some success cleaning the COF600 flange surfaces of the staining and residues observed when the downstream COF600 section was opened yesterday  
https://elog.ph.ed.ac.uk/CARME/118

Isopropanol and laboratory tissues were used - most but not all of the staining and the residues were removed.

Use the M10 jacking points provided top/bottom and 
left/right on the upstream and downstream sides of the 
flanges - for example see attachments 1 & 2

With the assistance of Oemer and Davide all of the M22 bolts removed from the downstream section of the CARME chamber. To separate the downstream section from the 
upstream sections it was necessary to use a lever between M10 bolts screwed into the lift points of adjacent sections of the CARME. The upstream sections were then 
lifted from the support frame and placed on the shipment crate base. The open ports of the CARME chamber sections were covered by Al foil.

Attachments 1-3 show downstream section following removal of upstream sections of CARME chamber. Note staining/residue top and bottom right - attachments 2 & 3.

Neg and ion cables were taken off and were put in the box.

Top support was taken off.

Motors are rotating again. Have to be careful with the position of the limit switches.

Split funnels were given to Oemer for cleaning. Have received them back after lunch.

Valve support is installed again (see picture 1).

Ion pump was connected but not activated. Michael will help in doing so. No vacuum support to help will RGA. Will proceed without it.

Neg and ion cables were labeled (see pictures 2 and 3).

Chamber was vented using nitrogen.

0. Give split-funnels to OG or Grossmontage to clean. Mount back foot support for gate valves. Critical when we split.

1. Wait for vacuum division to come to install: IE514 cables to current CM52 module, ion pump cables + controls + turn on, RGA head + program + turn on

2. Vacuum division should also bring N2 gas to vent CARME. Ideally vent by Wed to avoid losing time. Remember to disable ion pumps and remove all cables when venting.

3. While waiting to vent, connect pneumatic hoses to motors box in CARME rack. There is one pneumatic in (central feedthrough) and four pneumatic out. See picture attached. Top two go to left pneumatic motor, bottom two go to right pneumatic motor. Of each set of two, one is for extending the motor and one is for retracting but unclear which is which. Try to connect and operate motor manually by pressing on buttons on top of pressure reducer to ensure everything works. Don't forget to remove the safety pin.

4. Some disassembly of the servo motors may be required to get them operational. Use the Windows ClearView program provided by Teknic to control servos and change the function of the limit switches. Download from https://teknic.com/downloads/ -> ClearPath -> Software -> ClearView Install.zip . There is a Linux version but I have never tested it. The code on the raspberry Pi cannot reproduce some of the functions in the official program due to library limitations (but can do other things the official program cannot do).

5. After venting CARME, split open at the COF600 flange close to the magnet. Open CARME by 1-2 cm, remove spherical washers from top of rail studs, and lift with crane. Make sure knife edges of the two halves do not touch. CARME currently has feet mounted and cannot easily be placed on a standard pallet. Either dismount the feet (not easy to remount), or find a pallet on which CARME can land on its belly only, or place CARME on pallet with feet and screw feet down? Discuss strategy with DR asap.

6. Install split-funnels on flanges/wire harnesses in use (no point installing on other flanges). This may require dismounting top flanges. Probably switch from 3 hole to 4 hole configuration with funnels.

7. Test detector support going to actuator rod without detector. Make sure you have all the parts, including bolt to secure support to rod. You may want to push the rod in via pneumatic motor (or by hand pushing the plate outside) to gain better access.

8. Take detector support on table, install *two* detectors on same support, and mount on actuator rod in XHV. Connect wires and close via jacking plates. Optionally, consider mouting empty support on other rod? May be useful for diagnostic/scraping?

9. Move XHV thermocouple feedthrough to top flange and connect one thermocouple per detector, one to the support, and leave one floating inside

10. If the motors are fully operational, check how far/close they can be actuated from chamber wall. If not, take some dimensions for future reference.

11. Lift CARME back in place. Close using Pfeiffer COF600 seal and ~72 Nm force per bolt. 80 Nm were required in DL. Probably get Grossmontage to do this. Use our long torque-wrench.

12. Connect to interaction chamber via bellows. Beware gaskets on one side are non standard. One appropriate gasket should be on top of bellows box.

13. Reconnect pumps, rebuild octagon, reconnect thermocouples, rebuild baking tent, bake. Make sure to label the NEG cables this time!

14. Activate NEG pumps following this recipe. ALWAYS monitor temperature and be ready to stop if detector temperature reaches 120 C. NEG temperature does not drop immediately, don't wait until it is too late.

If temperature is increasing too quickly (check rates/h), decrease activation power in increments of 25 W. Remember to flash ion pumps.

A. Start from D2000. Activate one at a time with T 400 C, t rise 30 min, t hold 90 min. Activating a second D2000 while the first has reached its hold state seems safe. Leave at 250 C to keep clean.

B. Continue with UVH1400 furthest from the detector (DSSD wall chamber). Activate at P 200 W, t rise 30 min, to hold 90 min. Finish one set of two before moving to the second. Leave at 50 W to keep clean.

C. Continue with UHV1400 in intermediate chamber. Activate at P 150 W, rest as above. Leave at 50 W to keep clean.

D. Continue with 2xUHV1400 closest to detectors. Activate at P 70 W, rest as above. Leave at 50 W to keep clean.

E. Finish with 3xUHV1400 closest to detectors. Activate at P 90 W, rest as above. Turn all NEGs off when activation of 3x is complete.

F. Let chamber cool. Activate ion pumps at room temperature. Section off turbo pump.

Removed thermocouples, heaters, RE72 modules and leftover baking tent. Support octagon removed except topmost part which requires disconnecting pneumatic hoses going to top gate valve. To be done on Monday with ML assistance.

Attempted to move servo motors once more - did not work. The motors appear stuck but it is not clear how or where. Removed screws on flanged ball nut and on motor back. Still stuck. Moving by hand is not possible. Code likely complains about excessive force on motor startup. Will discuss with PB. Some dismounting once back in air may be required.

Attempted first motor test in XHV. Wired and connected limit switches and string potentiometer.

Set up raspberry pi to control motors (.124). Set up pi for remote headless access.

Moved jumper on Teknic hub from 1 to 2 motors configuration.

Linux code only sees one motor and gives issues due to improperly set up limit switches.

Switched to Windows Clear path program. Left servo motor refuses to move and sounds stuck. Unable to move by hand - unclear how braking is still active.

Right servo motor initially moves, but got stuck after one move, on limit switch. Complain about sensorless startup which refers to low bias or excessive torque. The second looks more likely from the display but unclear why. Brake engaged for this motor as well? Unable to move by hand even after disconnecting all cables.

Removed safety pin from bellows (compressed air still missing, to be fixed next week). Motors move in. Pressure from 2E-12 to 3.5E-12 mbar and quickly recovers (seconds). Subsequent move cause smaller pressure fluctuation. All good.

Will contact PB too figure out issue with motors. Problem unclear. Might require some dismounting.

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.

Attempted to activate 2xUHV1400 connected to bottom C4, channel #2 using P 200 W, t rise 30 min, t hold 90 min.
Temperature of Kapton bundle increased drastically to 160+ C. Had to stop. Conclusion is that these are likely
the two UHV1400 on the bottom of CARME, immediately in front of the Kapton bundle.

Left the chamber to cool for a while. Baking temperature set to 85 C.
Repeated attempt using above parameters except P 150 W. Too hot. Had to decrease P to 75 W to remain below 150 C
on the Kapton bundle. Temperature on internals increases slowly, even with P 75 W.
Lesson learned: activate the UHV1400 next to the detectors *last*. Once on, temperature increase on the
detectors can be reduced but not stopped.

Attempted to activate 2xUHV1400 on bottom C4, channel #3 using P 200 W, t rise 30 min, t hold 90 min. These
cannot be close to the detectors.
Possibly due to interference with #2 being on hold, temperature of internals starts increasing. Reduced P to 125
W. OK.
Second lesson learned: temperature on internals is very hard to control once the UHV1400 close to them are
activated. Activate other UHV1400 first.

Set #2 to hold 50 W. Set #3 to hold 50 W.

Attempted to activate *3*xUHV1400 on bottom C4, channel #4 using P 120 W, t rise 30 min, t hold 90 min. These
are definitely close to the detectors.
Temperature increase modest but noticeable. Activation completed before temperature increases
too much.

17:30 German time
Activation complete. All NEGs off simultaneously.
Heating power off.

CARME slowly cools down (<10 C/h)
Opened some parts of the jacket to allow better cooling (still <10 C/h)

Pressure reaches E-11 around 19:00
SIP elements in D2000 still at 120 C. Too hot to turn on.

SIP elements will be turned tomorrow morning. That should conclude this baking cycle.

Attempted activating 2xUHV1400 connected to top C4, channel #3 with P 300 W (450 C?), t rise 30 min, t hold 90
min as yesterday

Power reach 300 W, hold. Temperature increased by 5C. OK.

Activated top C4, channel #4 using same set of parameters. Internal temperature increases significantly, up to
140C and still increasing.

Decreased power on channel #2 to 100 W (down from 200 W yesterday). Should correspond to 350 C or so.
Temperature still increasing.
Decreased power on channels #3 and #4 to 250 W (425 C?). Temperature stops increasing. Around 155C on kapton
bundle. OK for kapton, detectors would have broken.
Baking code detected temperature on internals >150 C and stopped baking for safety. Temperatures do not change -
heating provided by NEGs more than enough to maintain current status.

Decreased power on channel #2 to 50W (250 C?). Temperature on internals decreases slightly. No major effect. 
This is likely because the UHV1400 corresponding to #2 are far from the detectors, while #3 and #4 are closer.

Decided to complete activation of #3 and #4 using 250 W. Set both to 50C after completion. Temperature of
internals decreases quickly.

Re-activated baking code when temperature on all internals <150 C. Setpoint 85C on RE72-1 and 95 on -2.

Now waiting for internals to cool down. Will activate remaining 3 sets (2+2+3 UHV1400) later today with P 200 W
(400 C?) t rise 30 min, t hold 90 min.
We know the set of 3 UHV1400 is definitely close to the kapton bundle. P 300 W (100x3) for that set.

PB found pictures of the original dirty assembly, before screws and components were shipped to DL.
See attached.

Found D2000 #1 activated and at 250C (25W) 
to prevent getting dirty when other NEGs 
are activated. See previous entries.

Attempted activation of D2000 #2 using T 
390C , rise time 30 m, hold time 90 m

After 30 m temperature inside chamber 
increased by 5C. 390 C corresponds to 75 
W.

Attempted activation of D2000 #3 while #2 
is holding temperature. Same parameters as 
above except T 400.

After 30 min, temperature in chamber up by 
10 more C to 110.

Attempted activation of #4 as above.

Set #2 then #3 then #4 to 250 C after hold 
time is over to protect them. All D2000 
activated. Max temperature on Kapton 
bundle 110 C.



Attempted activation of 2xUHV1400 linked 
to top C4, channel 2.

No thermocouple available. Used power 200 
W (2x100) rise time 30 m and hold time 90 
min. Upon reaching 200 W no effect on 
chamber interior temperature. Increased to 
300 W. Temperatures increased to 120C max 
roughly. Acceptable.

Had to decrease hold time to 60 m to avoid 
remaining in cave alone for too long. 
Likely okay with 300 W (450 C?). Left on 
150W (400C?) to protect from subsequent 
activations tomorrow.

Because cables are unlabeled it's not 
clear how far the activated UHV1400 are 
from the detectors. If close, this recipe 
works. If far, we may have to use lower 
power for other modules.

NEG power
SIP power
UHV1400 operating instructions