| ID |
Date |
Author |
Subject |
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94
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Wed Sep 29 09:27:38 2021 |
CB (remotely), RSS JM ML | Power cut |
Sudden and unexpected power cut at 10:02 German time, affecting all the target hall.
It has been caused by the emergency alarm being triggered. Reasons unclear. Electricians were informed.
CARME top gate valve closed.
10:33 power is back
Set point 120C
Scroll on, turbo on (980 Hz normal operation), valve open
Pressure at 1.34E-6 mbar
No obvious issues.
13:00
Power appears back for the whole ring.
Set point 128C
Turbo normal operation - no apparent adverse effects of shutdown
Pressure at ~3E-7 mbar
Pi can again be accessed by ssh. Vacuum plot is updating again. |
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93
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Wed Sep 29 06:49:41 2021 |
RSS JM | CARME baking status -11 |
Current temperature ~130 C (on manual mode)
See plot and screen attached.
Current pressure ~6.08E-7 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 |
| Attachment 1: Screenshot_from_2021-09-29_07-48-03.png
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| Attachment 2: Screenshot_from_2021-09-29_07-48-36.png
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92
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Tue Sep 28 18:53:13 2021 |
RSS JM | CARME baking status -10 |
Current temperature ~130 C (on manual mode)
See plot and screen attached.
Current pressure ~9.98E-7 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 |
| Attachment 1: Screenshot_from_2021-09-28_19-54-16.png
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| Attachment 2: Screenshot_from_2021-09-28_19-51-19.png
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91
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Tue Sep 28 12:18:54 2021 |
RSS JM | CARME baking status -9 |
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 |
| Attachment 1: Screenshot_from_2021-09-28_13-17-51_1.png
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| Attachment 2: Screenshot_from_2021-09-28_13-18-18.png
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90
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Tue Sep 28 06:40:22 2021 |
RSS JM | CARME baking status -8 |
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 |
| Attachment 1: Screenshot_from_2021-09-28_07-38-53.png
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| Attachment 2: Screenshot_from_2021-09-28_07-39-22.png
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89
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Mon Sep 27 21:33:50 2021 |
CB (remotely) | CARME baking status -7 |
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 |
| Attachment 1: Temps.png
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| Attachment 2: Screen.png
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88
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Mon Sep 27 17:53:35 2021 |
JM RSS | Baking Jacket upgrade + NEG controllers connected |
Additional baking jacket sections for the turbo section arrived today. Baking was halted at ~11:00 to allow for the chamber to cool to install new sections. New sections installed and baking restarted at 15:25. Jacket fits much better with gaps near the turbos and the motors now covered much better. Attached are some photos.
While heaters were off, the pressure fell to ~3E-9 mbar and was continuing to fall before baking was restarted.
Current baking temperature is ~75C and code is in automatic mode.
The NEG and motor controllers have been installed on the rack next to the chamber. See attached. The bottom NEG controller is connected to the 4 D-2000 NEG-ion pumps. The cables for the D-2000s have kapton tape attached. The middle NEG controller is connected to the NEG pumps whose feedthroughs are on the chamber on the inside of the ring. One of the connections on the middle controller is for the 3 NEGs connected together oppose to the usual 2. This connection is marked by white tape. The top controller is connected to the feedthrough who are on the side of the chamber on the outside of the ring. |
| Attachment 1: 20210927_151650.jpg
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| Attachment 2: 20210927_151706.jpg
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| Attachment 3: 20210927_151721.jpg
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| Attachment 4: 20210927_170139.jpg
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87
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Mon Sep 27 11:09:48 2021 |
CB (remotely) | Temperature vs Pressure plot |
Attached. |
| Attachment 1: Temps.pdf
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86
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Mon Sep 27 06:42:45 2021 |
RSS JM | CARME baking status -6 |
Current temperature ~102 C. Was set in the manual mode since last evening 18:54.
See plot and screen attached.
Current pressure 3.62E-7
See
https://uoe-my.sharepoint.com/:x:/g/personal/cbruno2_ed_ac_uk/EVbsVOubNHRLj0PKiFIvd00BClMJ6WSJ1UDAyLA2F3R4jA?rtime=OK4kVZKB2Ug
http://web-docs.gsi.de/~lestinsk/vacplot.php |
| Attachment 1: Screenshot_from_2021-09-27_07-41-06.png
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| Attachment 2: Screenshot_from_2021-09-27_07-41-39.png
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85
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Sun Sep 26 17:20:13 2021 |
RSS JM CB (remotely) | CARME baking status -5 |
Current temperature ~105 C
See plot and screen attached.
Current pressure 6.08E-7
See
https://uoe-my.sharepoint.com/:x:/g/personal/cbruno2_ed_ac_uk/EVbsVOubNHRLj0PKiFIvd00BClMJ6WSJ1UDAyLA2F3R4jA?rtime=OK4kVZKB2Ug
http://web-docs.gsi.de/~lestinsk/vacplot.php |
| Attachment 1: Screenshot_from_2021-09-26_18-19-26.png
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| Attachment 2: Screenshot_from_2021-09-26_18-18-23.png
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84
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Sun Sep 26 07:41:00 2021 |
CB (remotely) | CARME baking status -4 |
Current temperature ~87C
See plot and screen attached.
Note Baking code restarted yesterday evening.
Current pressure 2.1E-7 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 |
| Attachment 1: Temps.png
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| Attachment 2: Screen.png
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83
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Sat Sep 25 19:01:50 2021 |
CB (remotely) | CARME baking status -3 |
Baking automatically stopped due to negative gradient in on thermocouple for 10 minutes straight.
Not surprising giving we were baking at full power bu making little progress. We should have switched to manual
mode.
Switched to manual mode for now at 60 C to recover temperature without excessive gradients.
Will restart automatic mode later today. Should be back to full power tomorrow morning.
EDIT
21:42 CET - Temperature stabilised. Restarted automatic mode. |
| Attachment 1: Temps.PNG
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82
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Sat Sep 25 07:23:06 2021 |
CB (remotely) | CARME baking status -2 |
Current temperature ~90 C
However note setpoint is at 102 C. It appears we are baking at full power, but too many heat losses?
Temperature gradient still increasing. May just be a matter of time.
See plots attached
Current pressure ~ 1.9E-6 mbar decreasing
See
https://uoe-my.sharepoint.com/:x:/g/personal/cbruno2_ed_ac_uk/EVbsVOubNHRLj0PKiFIvd00BClMJ6WSJ1UDAyLA2F3R4jA?rtime=OK4kVZKB2Ug
and
http://web-docs.gsi.de/~lestinsk/vacplot.php |
| Attachment 1: temp_plot.png
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| Attachment 2: temps.png
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81
|
Fri Sep 24 15:36:34 2021 |
CB (remotely) | CARME baking status |
Current temperature ~64 C
See plots attached
Current pressure ~ 2.5E-6 mbar
See
https://uoe-my.sharepoint.com/:x:/g/personal/cbruno2_ed_ac_uk/EVbsVOubNHRLj0PKiFIvd00BClMJ6WSJ1UDAyLA2F3R4jA?rtime=OK4kVZKB2Ug
and
http://web-docs.gsi.de/~lestinsk/vacplot.php |
| Attachment 1: Temp.png
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| Attachment 2: Temps.png
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80
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Fri Sep 24 09:44:58 2021 |
JM ML | Vacuum gauge readout |
The analog readout of the Combivac controller for the IE514 ion gauge has been set up, readings are plotted to http://web-docs.gsi.de/~lestinsk/vacplot.php. Readings and plot should be updated every minute. |
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79
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Fri Sep 24 08:47:36 2021 |
JM RSS CB(Remotely) | Baking |
Baking halted on 23/9/21 16:16 as connection to TC08 module was lost. USB cable connection to TC08 module appears to have been damaged in shipment. USB hub and cable replaced, connection re-established and baking restarted 17:27.
Ramping of baking limited to 40C by the maximum difference between parts of the chamber being too high, this safety feature prevents high thermal gradients. Limitation caused by uneven heating due to placement of heating elements resulting in the gate valve end of the chamber being much cooler than the rest of chamber. The pressure increased to ~8e-7mbar at 40C due to increased outgassing. Baking stopped at 07:00 24/9/21, heating elements were repositioned and the baking jacket reassembled. Code recompiled to include the rate and temperatures limits from elog 76.
Baking restarted at 10:00 |
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78
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Fri Sep 24 07:04:57 2021 |
RSS JM | IE 514 pin arrangement and degas instructions |
Fabre (German) Color (English)
grau grey
blau blue
rot red
braun brown
weiss white
rosa pink
gelb/gruen yellow/green |
| Attachment 1: IE514_pin_arrangement.JPG
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| Attachment 2: degas_function.jpg
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77
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Thu Sep 23 14:19:27 2021 |
CB (remotely) | Checking baking remotely - instructions |
1. Connect to pi on CRYRING local network
ssh pi@192.168.207.127
Password available on request
2. To check state of baking code
screen -x
please do not press any keyboard button if unsure how the code works.
Pressing q instantly stops baking in case of emergencies
when done, to disconnect
CTRL+A
d
3. To check log of commands / previous status of baking code
cd Programs/Baking
cat Log.dat
4. To check temperature plot
cd Programs/Baking
gnuplot Plot_temps.gp
CTRL+C on terminal to quit
Please remember the Pi has limited computing power and the gnuplot window will consume some of that when open
One remote user is no problem, but multiple may give issues to the Pi
5. Check current pressure
Currently:
https://uoe-my.sharepoint.com/:x:/g/personal/cbruno2_ed_ac_uk/EVbsVOubNHRLj0PKiFIvd00BClMJ6WSJ1UDAyLA2F3R4jA?e=hEoZt7
(Pictures from webcam are in ~/Webcam on the pi
CM52 data also to be available online in real time soon) |
| Attachment 1: Temp.png
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76
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Thu Sep 23 13:31:12 2021 |
JM RSS ML | IE514 Gauge and Bakeout |
CARME setup checked by vaccum group this morning.
Both IE514 gauges de-gassed. To de-gas on the CM52 controller select the channel and hold the right arrow for two seconds. The reading will flash indicating the de-gassing procedure, this lasts for 2 minutes before completing. Flashing automatically stops once procedure finishes. Attached for convinience is the wire colour-pin assignment for the gauge head again.
Baking jacket fully assembled around CARME and baking code updated. Temperature and rate limits updated to match thermocouples around the chamber.
Max Temperature Max Rate
Chamber 155C 10C
Floating 175C 150C
Octagon (outside tent) 50C 10C
Automatic baking started at 13:50, pressure was 1.69e-7 mbar |
| Attachment 1: 20210923_113239.jpg
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| Attachment 2: 20210923_134339.jpg
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| Attachment 3: 20210923_134355.jpg
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| Attachment 4: 20210923_135954.jpg
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75
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Wed Sep 22 14:44:51 2021 |
JM RSS ML | CARME leak test + bakeout tent |
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.
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| Attachment 1: 20210922_145646.jpg
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| Attachment 2: 20210922_145933.jpg
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| Attachment 3: 20210922_151728.jpg
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| Attachment 4: 20210922_152052.jpg
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| Attachment 5: 20210922_152113.jpg
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