| ID |
Date |
Author |
Category |
Subject |
Text |
 |
|
50
|
Fri May 14 08:55:53 2021 |
Sebastian | General | ToDO 14.5 ...so far | 1.) ion lasser overlap and scraper test
2.) change bunching frequency to middle of |
|
|
51
|
Fri May 14 09:00:55 2021 |
Sebastian | General | UNILAC Problems | ~30 min downtime
--> LASER ADJUSTEMENTS! |
|
|
70
|
Sun May 16 02:18:53 2021 |
Sebastian | General | UV Drop | 1:25 a.m. huge drop in UV laser power
-> small crystal bump with both y screws
of bbo oven |
|
|
19
|
Wed May 12 10:15:47 2021 |
Volker Hannen | DAQ | Unplugged TDC inputs for MCP front and back | To reduce the load on the VUPROM TDC, we unplugged
the TDC inputs for the front and back signals
of the MCP of the XUV detector.
|
|
|
28
|
Wed May 12 23:36:18 2021 |
Ken Ueberholz | DAQ | VI change | carbon main vi - kopie is now in operation
here, in keysight.vi the input settings for |
|
|
39
|
Thu May 13 18:34:54 2021 |
Ken Ueberholz | General | What happened scince shift change at 4pm | Ion frequency shifts with laser, both manually
and scanned, without bunches: successful
Bunching with 7 and 20 bunches: successful
|
|
|
42
|
Thu May 13 23:42:37 2021 |
Ken Ueberholz | General | What was done | In this shift a number of successful Schottky
measurements were done:
With fixed laser wavelength, while varying |
|
|
85
|
Tue May 31 07:29:11 2022 |
Ken | Detectors | XUV-Detektor | Rate was very low: ~ 100Hz
Adjusted Walk level and Threshold, new rate:
5kHz
|
|
|
48
|
Fri May 14 07:20:18 2021 |
Team #Night | General | actual bunching frequency | 25,82556 MHz
h = 20 |
|
|
61
|
Sat May 15 03:39:16 2021 |
Team | General | actual revolution frequency | frev = 1,2912735 MHz |
|
|
6
|
Tue May 11 20:14:43 2021 |
Danyal | General | bad ESR vacuum | I just heard that the ESR vacuum is quite
bad.
There was a small vacuum problem a while |
|
|
31
|
Thu May 13 01:01:27 2021 |
Danyal | DAQ | bunched ion beam | |
|
|
Draft
|
Fri May 14 07:33:42 2021 |
Team #Night | General | ecooler central frequency shifted relative to bunch central frequency | |
|
|
5
|
Tue May 11 18:29:35 2021 |
Danyal | General | first ions in the ESR | |
|
|
11
|
Wed May 12 08:32:04 2021 |
Sebastian | Analysis | fluorescence & energetic overlap | During the night shift we saw several rises
of the fluorescence (see another entry) and
also energetic overlap in coasting beam modus.
|
|
|
25
|
Wed May 12 22:35:33 2021 |
Danyal | General | frev and fb | Schottky frequency (189th harmonic) = 244.033662
MHz
|
|
|
21
|
Wed May 12 15:36:04 2021 |
Danyal | Accelerator | general power failure in ESR! (everything is off) | The power in the ESR is off.
(also on the gas-target area on top of ESR)
Electrical engineers are trying to find and |
|
|
8
|
Wed May 12 02:34:29 2021 |
Danyal | General | instabilities in ion frequency | The ion beam moves around, pretty arbitrary.
See picture.
ESR crew believes that it is not due to fluctuations |
|
|
10
|
Wed May 12 08:10:17 2021 |
Lars | General | instabilities in ion frequency | looks like the E-Cooler is responsible for
this. If one turns off the electron current,
the beam stays stable.
|
|
|
32
|
Thu May 13 01:05:45 2021 |
Danyal | DAQ | more stability by bunching | Because the C3+ part of the ion beam is properly
bunched, it is no longer so sensitive to
the drifts caused by the e-cooler.
|
|