 Wed Mar 1 16:06:50 2023, BS, Runs, , , Run 23 Stopped
|
Run 23 Stopped due to some unexpected spikes in the
voltage of collimator.
The plunger did not responde to change distance. |
|
Wed Mar 1 16:07:49 2023, BS, Runs, , , Run 24 Started
|
Run 24 has been started but no beams at the moment.
EAGLE is opened.
Just colecting background. |
|
Thu Mar 2 09:05:43 2023, DOD, Problems, , , Sulphur on aluminium fusion-evaporation reactions
|
Using the data which we've sorted to date, I looked into the gamma-gamma coincidences and have identified a number of nuclei e.g. 50Cr, 52Mn,
55Fe which would be consistent with fusion-evaporation reactions involving the sulphur-32 projectiles and aluminium-27. Such reactions would yield a 59Cu
comound system and these channels would be populated as a result of the evaporation of a combination of alphas, protons and neutrons. |
|
Thu Mar 2 11:17:54 2023, BS, Runs, , , Run 29 stopped
|
| We will change the trigger and we stopped the run number 29 |
|
Thu Mar 2 17:28:21 2023, BS, Runs, , , Run 33 Started
|
Run 33 Started
Plunger Run : 48
Supposed Distance = 10 um |
|
Fri Mar 3 00:09:19 2023, MP, AT, Runs, , , run 35
|
Started after beam current was reduced by a factor of 2
plunger run # 116
Earlier: CUP#6 100 enA |
Fri Mar 3 13:43:56 2023, IP. KWL, Runs, , , 511 annihilation and 279 Au lines in Ge rings 
|
The counting rate in 511 keV line for sum of the Ge detectors placed at 101, 117 and 143 degrees (with approved ACS). The largest intensity is visible
for Ge at 143 degrees, lowest for 101 deg.
=============================== RING 101 |
|
Sun Mar 5 22:32:56 2023, MP, Other, , , change of the target 6x
|
See pictures in the attachment:
1) stopper seen from the back (upstream view)
2) stopper seen from the front (downstream view) |
|
Sat Mar 11 09:29:48 2023, EG, Other, , , current exeriment parameters as requested in the manual for shifters
|
41_ge_single_theta 101,117,143 looks ok. No peakdeformation of 511, other gammas FWHM around half of that of511 - ok
ch4 in total rate EAGLE_0 arouns 2.1 kHz - ok
planger tollerace limits (green and blue horizontal markers) set far of the current distance, intantionally? |
|
Sat Mar 11 10:46:37 2023, EG, Other, Beam intensity, ,
|
ch4 in total rate EGALE_) reached 2.4 kHz, beam intensity has been reduced to fit the required 2kHz.
|
|
Sat Mar 11 11:39:55 2023, EG, Problems, , , Buffers clearing
|
at 11:34:50 sek on 11 march a spike in counting rate of some Ge detectors is observed. Buffers not cleared properly?
|
|
Sat Mar 11 12:42:42 2023, EG, Other, , , Beam intensity reduction
|
| Again beam intensity gradually increased reaching 2.4 kHz ontotal rate EAGLE_0 ch4. Beam intensity reduction requested. 1.8 kHz on ch4 after reduction. |
|
Sat Mar 11 14:15:55 2023, EG, Runs, , , Beam intensity rapid increase
|
| 14:12 beam intensity instability. Rapid increase of beam intensity - twice the previous value. Returned to normal after 4 minutes. |
|
Sat Mar 11 14:42:28 2023, EG, Runs, , , Beam instabilities
|
Large beam intensity instabilities from 14:10 till 14:40. Beam intensity reduction requested. CH4 on Total rate EAGLE_0 returned to 1.9kHz. Intensity
became stable.
|
|
Sat Mar 11 15:16:31 2023, EG, Other, , , Beam intensity reduced again
|
| Again beam intensity to high. Reduced to 2 kHz on ch4 GE |
|
Sun Mar 12 09:15:00 2023, EG, Other, , , Array_monitors mat refresh synchronization
|
Beam stable, counting rate within limits, plunger distance within the given tollerance, gamma spectra ok, everything looks good but....
(yes there must be some "but"), refreshing of EAGLE_array_monitor.mat and NEDA_array_monitor.mat are out of sync. Mostly pure red colour
is dysplayed. Not very usefull and (I suppose) missleading information. |
|
Sun Mar 12 13:20:00 2023, EG, Problems, , , No Data
|
For a split second a red "NO DATA" notification appeared in the top right corner of Counting rates dashboard.
It looks like it did not change anything in data collection.
|
|
Sun Mar 12 20:55:08 2023, MP, Runs, , , runc62 152 for efficiency calibration
|
started
source in the target position, as precisely as possible
|
|
Mon Mar 13 12:15:35 2023, MP, Other, , , measurement of radioactivity along the beam line
|
At about 12:00, 13/03/2023 (about 17 hours after the beam was stopped), a measurement of activity of the beam line was performed using FH
40G-L10 meter.
Radioctivity run 65 stopped before the measurement, radioactivity run 66 started after the measurement |
|
Mon Mar 13 12:16:31 2023, MP, Other, , , run 66
|
run 66 started, radiocativity (background)
|
|