2x cooling water manifolds with 2x 8 ports have been installed - see attachments 1 & 2

'drain' ports at top of manifold to permit release of trapped air volumes. Local technicians will install a standard blank in one manifold and a small nipple valve on the 
other so that we can bleed air in a controlled way.

#Multimeter detector pin tests. 
Pins on feedthrough flanges investigated using multimeter for the top and bottom detector due to no response from bottom detector when bias was applied. Bias pins on 
correct D connectors are number 78. 

#Top detector
>Observe -18.5 kohm; between nn bias pin and pn bias pin  (multimeter 200kohm setting)
>observe open line between nn bias pin and pins 'near' pn bias pin (multimeter 200kohm setting)

>Between random pins on same D connector (nn bias pin connector) ~0.02Mohm (multimeter 2Mohm setting)
>Between random pins and unconnected on same D connector (nn bias pin connector) - open line (multimeter 2Mohm setting)
>Between random pins and bias pin on same D connector (nn bias pin connector) ~0.01-0.02 Mohm (multimeter 2Mohm setting)

>Between nn bias pin and random pin on another D connector ~-0.4Mohm (multimeter 2Mohm setting)

#Bottom detector 
>Observe open line between nn bias pin and pn bias pin (multimeter 200kohm+2Mohm; setting)
>Observe open line between nn bias pin and pins 'near' bias bias pin (multimeter 200kohm+2Mohm; setting)

>Between random pins on same D connector (nn bias pin connector) ~0.02Mohm (multimeter 2Mohm setting)
>Between random pins and unconnected on same D connector (nn bias pin connector) - open line (multimeter 2Mohm setting)
>Between random pins and bias pin on same D connector (nn bias pin connector) ~0.01-0.02 Mohm (multimeter 2Mohm setting)

>Between random pins on same D connector (pn bias pin connector) ~0.02Mohm (multimeter 2Mohm setting)
>Between random pins and unconnected on same D connector (pn bias pin connector) - open line (multimeter 2Mohm setting)
>Between random pins and bias pin on same D connector (pn bias pin connector) ~open line (multimeter 2Mohm setting)

>Between nn bias pin and random pin on another D connector ~-0.4Mohm (multimeter 2Mohm setting)

We see a similar response for both detectors except that the pn bias pin gives no response. 
We have looked to find the bias pin on nearby pins to pin 78 and on the other side of the D connector (in case of cabling error-mirror or swapped cables) but cannot find. 

4 FEE holders constructed and ready to install

Baking tent, frame and trays fully removed from CARME chamber. Removal of baking frame required removing air lines from upper gate valve and repositioning of vacuum hose connecting turbo pump to backing line and turbo power cable. Some difficulty encountered removing upper baking frame now the target support frame is assembled. Small modification seperating section in two would aid future installation and disammebly. 

Baking trays removed with difficulty. Main baking tray bent to extract from the frame -> updated design required for future bakeout cycle. 

VI tests performed on the upper and lower detectors. Upper detector shows characteristic curve (attached plot), lower detector shows no response to increased voltage. Multimeter used on adapter boards with resistance of ~18.5 kΩ observed between bias pins for the upper detector. Open line seen between bias pins on the lower detector, some connections observed for other pins on the board -> requires further investigation.  

NOTE - Channel 0 on bias supply is unstable, should not be used. 

 Most equipment for installation of FEE's and coolant manifolds found, assembley of FEE holders started. Full list of current swagelock inventory as follows:

Dry run complete.

YR09 section valves closed. Section isolated. Manual valve between electron target and CARME remain open.

GSI vacuum division IE514 gauge connected.

Gleb reports gate downstream opened. Vacuum goes up and recovers as expected.

Attached

ML reports power cut in CRYRING cave. Reasons unknown. No effect on vacuum, but top valve closed for safety reason. Ramping down temperature.

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.

Opened up front part of tent just enough to allow GSI vacuum division to connect IE 514 and GSI ion pump. Tent to remain until January.

Left to do this year:

- Turn on GSI ion pump

- Turn on GSI IE514

- Close top gate valve

- Turn off maglev turbo (very close to magnet)

Found temperatures and pressure stabilised overnight. See attached.

12:00 Began activation of 3x UHV1400 in channel 2, top module. Started using 90 W as per procedure. No effect on temperature. Increased to 120 W. OK

14:30 Began activation of 2x UHV1400 in channel 1, in front of the detectors. Considered moving detectors but decided against it since bellows are rated to move at 20C at most. Activated at 60 W (vs. 75 W in procedure). OK

All NEG elements off. CARME heaters ramping down to 60 C overnight. 

Ion pumps activated < 100 C. Valve closed. #4 doesn't come online properly. Sone issues with #2 as well but it recovered on its own. Left cooling down. No changes. Ion pumps off and valve open. Will try tomorrow. Could be faulty cable?

Vacuum division may want to activate their pump as well - times unclear.

08:20 Temperature of channels 1-3 and 5-6 were reduced to 120 degrees. Immediately after, the conditioning of the NEGs was stopped and D2000s ion pumps were flashed 5 times. The temperature of the gas jet target and the electron target channels was reduced to 120 degrees.

11:00 Started activation of D2000 following procedure in ... at T=400 C for trise 30 min + thold 90 minute. After activation, NEG elements are left at 200 C to maintain cleanliness. Temperatures increasing, but still well below safety margins.

16:00 Started activation of NEGs from channel 1 at 200 W. No effects on temperatures. Activated channel 2 as well. No significant effects. Increased activation power to 250 W. No issues

16:30 Given temperatures are still low decided to activate 3 and 4 with 230 W (Vs. 150 W last time). Ok for 30 minutes then temperature starts increasing a bit too quickly. Decreased to 200 W. Ok.

18:45 Activation all NEGs on middle module complete. Left overnight to stabilise / cool.

21:00 Channel 6 of the heater stops responding properly. ML asked HKR to disable. No effects on temperatures.

Increased conditioning temperature in D2000 #3 and 4 (behind detectors) to 150C from 130/140C. No appreciable change in temperature. Minor effects in pressure.

Pressure has completely recovered from yesterday and did not settle on higher/lower plateau value which may suggest conditioning the D2000 NEG elements has helped outgassing the chamber as a result of the low baking temperature.

Will now try to condition the UHV1400 furthest from the detectors at very low power according to SAES conditioning instructions.

The advantages are unclear at present, but more temperature during baking should not hurt final vacuum level. Will re-activate all NEGs anyway.

14:00 - Set power for all UHV1400 except those in the moving DSSD chamber to 20W. Some effects on both pressure and temperature. Will leave over weekend, start activation on Monday.

Used thermocamera provided by GSI beam diagnostic division to take some pictures of YR09. See attached.

Due to aluminium outer wrapping some reflections are inevitable, but tried to only take pictures of heat spots that did not disapper from different angles.

Temperature calibration may be not perfectly reliable as well.

1. Gap close to CARME outside motors

2. CARME top valve

3. CARME top valve

4. CARME turbo

5. Interaction chamber looking downstream from outside of ring. Note flexible hose pumping Be window.

6. As 5, from inside the ring.

7. Interaction chamber detail (see top left in picture above)

8. IE514 sensor on interaction chamber bottom

9. YR09 from inside the ring. Note electron target

10. As above, looking further upstream

11. YR09 from inside the ring, looking downstream towards CARME

12. Electron target from inside the ring

13. Electron target from outside the ring. Biggest flange.

14. Interaction chamber from inside the ring

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.

Followed SAES procedure / pre-sets to condition D2000 NEG elements while baking, but reduced temperature from 250 to 150 C (1,2) 140 C (4) and 130 C (3).

No appreciable changes in temperature. Change in pressure quite apparent. Left elements at temperatures above. May consider increasing everything to 150 tomorrow assuming detector temperatures do not change.

May also consider conditioning NEG elements in intermediate and DSSD wall chambers with 15W power (150C?) during baking as per SAES procedure. We never did this before, but we never baked as such low temperatures either. Will have to activate NEG elements after conditioning either way.

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

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.

13:00 Tent was slightly opened from the sides so that the heat can escape.

13:15 NK mounted three 200 W (see red labels in the picture below) and one 40 W (see the yellow label in the picture below) heating jacket on four CF100 flanges. Power cables and thermocouples were taken care of by AK.

14:00 Tent was closed.

14:00-17:00 ML started baking at temperature 80 degrees to check the heat distribution in the tent. Baking was then stopped and will start from Monday.

Attached - thermocouple temperatures (now correct)

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.

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.

Ch1: CARME chamber long tape (2 kW)

Ch2: CF100 flanges exit side

Ch3: CF100 bellows exit side

Ch5:  200 W (x3) CF 100 flanges

Ch6:  40 W CF 100 flange

Ch8: VAT 100 gate valve to ring

example: in 39:50, 39 is the temperature and 50 is the set temperature.

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 to be built by tomorrow.

MG and RSS tried the magnetic power back off thing which eventually did not work.

AK and NK helped with the power and thermocouple of the heating wire. NK has also covered the pipe and bellows near the magnet with heating jackets.

1. Detector

2. Chamber back

3. Strain relief

4. Target

5. Front CARME

6. Top hanging

7. Middle middle CARME

8. Middle bottom

1. Middle top

2. End middle

3. Elbow

4. Valve

5. Magnet pipe

6. End back

7. Float

8. End bottom

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.

Ragan and Oemer are currently threading a 10m heating tape helically around the CARME chamber.

16.20 ML reports baking of upstream section is proceeding OK - currently ramping to 100 deg C at 10 deg C / h.

16.25 RSS reports that he completed the install of the thermocouples this morning and will update the Elog with specific locations of each thermocuple and TC08 channel 
later today.

16:30 All CARME thermocouples <20 C. No temperature changes. Monitor.x left under screen. Please summon with screen -x and dismiss with CTRL+a d

17:40 One CARME thermocouple at 40C (CARME front)