| ID |
Date |
Author |
Category |
Subject |
Year |
|
194
|
Sun Mar 22 16:10:12 2020 |
Michael | Runs | run entry - run086 | |
open file : run086
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 15:39 , first file: run086_0001.lmd
run stop at , last file: run_0xxx.lmd
_______________________________________________________________________________
time: 16:10 pm.
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 1 Hz
Xray_90: 56 Hz
Xray_145: 28 Hz
BaF_OR: Hz
Si voltage: 60.02 V
Si leakage current: 4.07 uA
SIS particles before: ~2.3e9
ESR current at injection: 10.5 uA
ESR particles after decel.:
Target ON density: 8.92e13
copy and repeat the above (below the line) every 30 minutes |
|
193
|
Sun Mar 22 15:39:29 2020 |
Michael | Runs | run entry - run086 | |
open file : run086
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 15:39 , first file: run086_0001.lmd
run stop at , last file: run_0xxx.lmd
_______________________________________________________________________________
time: 15:42 pm.
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 4 Hz
Xray_90: 45 Hz
Xray_145: 22 Hz
BaF_OR: Hz
Si voltage: 60.01 V
Si leakage current: 4.06 uA
SIS particles before: ~2.1e9
ESR current at injection: 11 uA
ESR particles after decel.:
Target ON density: 8.8e13
copy and repeat the above (below the line) every 30 minutes |
|
192
|
Sun Mar 22 15:14:01 2020 |
Michael, Laszlo | Runs | run entry - run085, gas jet is back in business! | |
open file : run085
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 14:39 , first file: run085_0001.lmd
run stop at , last file: run_0xxx.lmd
_______________________________________________________________________________
time: 15:14 pm.
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 2 Hz
Xray_90: 55 Hz
Xray_145: 32 Hz
BaF_OR: Hz
Si voltage: 60.02 V
Si leakage current: 4.07 uA
SIS particles before: ~2e9
ESR current at injection: 9 uA
ESR particles after decel.:
Target ON density: 8.7e13
copy and repeat the above (below the line) every 30 minutes
http://clipboard.acc.gsi.de/screenshot-app/screenshots/tcl1048/2020-03-22_15-29-05-937.png |
| Attachment 1: 2020-03-22_15-29-05-937.png
|
|
|
191
|
Sun Mar 22 14:58:59 2020 |
Laszlo | General | dropping density of Gasjet | |
after like 20min run, the density of the gasjet already dropped from 10^14 to 8.7*10^13. Now it seems to remain in that value
Below in arbitrary units one can see the trend of the gas jet density starting from 10^14 to 8.7*10^13 |
| Attachment 1: ga_jet_drop.png
|
|
|
190
|
Sun Mar 22 14:40:14 2020 |
Esther, Michael, Laszlo | Runs | run entry - run085, gas jet is back in business! | |
open file : run085
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 14:39 , first file: run085_0001.lmd
run stop at , last file: run_0xxx.lmd
_______________________________________________________________________________
time: 14:40 pm.
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 3 Hz
Xray_90: 63 Hz
Xray_145: 30 Hz
BaF_OR: Hz
Si voltage: 60.02 V
Si leakage current: 4.05 uA
SIS particles before: ~2.5e9
ESR current at injection: 9 uA
ESR particles after decel.:
Target ON density: 1e14
Base line for ESR current drops dpwn from 4 to -2 after restarting the ESR cycle
copy and repeat the above (below the line) every 30 minutes |
|
189
|
Sun Mar 22 14:23:50 2020 |
Esther, Ragan, Michael, Laszlo | Runs | run entry - run084, Uli working with gas jet target | |
Uli is still working with gas jet target.
open file : run084
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 14:25 , first file: run084_0001.lmd
run stop at , last file: run_0xxx.lmd
_______________________________________________________________________________
time: 14:25 pm.
ON Rates
Si_X: Hz
Si_Y: Hz
Xray_35: Hz
Xray_90: Hz
Xray_145: Hz
BaF_OR: Hz
Si voltage: 60.01 V
Si leakage current: 4.07 uA
SIS particles before: ~2.5e9
ESR current at injection: 11 uA
ESR particles after decel.:
Target ON density: Uli is working on it
Base line for ESR current drops dpwn from 4 to -2 after restarting the ESR cycle
copy and repeat the above (below the line) every 30 minutes |
|
188
|
Sun Mar 22 13:33:19 2020 |
Laszlo | General | 2nd storage of MCP data | |
I made a backup for the MCP data on my own GSI laptop. Looking for better solution...
the original "fresh" files stored at litv-exp@lxg1299:/data.local2/hillenbrand/Laszlo/ |
|
187
|
Sun Mar 22 13:22:44 2020 |
Esther, Ragan | Runs | run entry - run083, Uli working with gas jet target | |
Uli is still working with gas jet target.
open file : run083
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 13:25 , first file: run083_0001.lmd
run stop at , last file: run_0xxx.lmd
_______________________________________________________________________________
time: 13:25 pm.
ON Rates
Si_X: Hz
Si_Y: Hz
Xray_35: Hz
Xray_90: Hz
Xray_145: Hz
BaF_OR: Hz
Si voltage: 60.01 V
Si leakage current: 4.05 uA
SIS particles before: ~2.5e9
ESR current at injection: 11 uA
ESR particles after decel.:
Target ON density: Uli is working on it
Base line for ESR current drops dpwn from 4 to -2 after restarting the ESR cycle
copy and repeat the above (below the line) every 30 minutes |
|
186
|
Sun Mar 22 12:53:43 2020 |
Laszlo | General | quick summary for the 118Te overnight measurement | |
Quoting Yury:
"The count rate is very low. We estimate that we store about 10^4 118Te particles at 10 AMeV. This is a very low number.
On Saturday we re-implemented the recoil setup (MCP from Pierre-Michelle) from the previous experiment and could verify the overlap between the stored beam and the gas-jet.
In the evening the intensity has been optimized and we are running presently with stable 1.5-2 10^9 particles extracted from the SIS. Indeed, another factor 2-3 would be great.
We had to work on the gas-jet target density which significantly dropped."
Yesterday evening we started with gas jet-denisity of ~7E13 which dropped during night to ~2E13.
We have overall on the targetON Si position histo 57 counts. Form these I estimated based on the 124Xe measurement like very roughly 21% Rutherford, 63% pn, and 6% pg counts. For the number of pg this would mean 3.4counts, I can see now like 2 (bin (6,6) and bin (6,7))
To only good news that the scraper seems to work, althought the 2 bins at (6,12) and (6,15) I don't understand now.
Also we can see some tiny peaks in the Xray spectra. The tininess can be explained due to the low number of ions in the ESR. |
| Attachment 1: 118Te_after13h_measurement.png
|
|
| Attachment 2: 118Te_Xray_Espectra.png
|
|
|
185
|
Sun Mar 22 12:50:00 2020 |
Shahab | Runs | Life time of 10 MeV/u Tail of 118-Te-52+ | |
The life time of 10 MeV/u Tail of cycle 118-Te-52+ was analyzed using Schottky peak intensity. Schottky signal was taken from the parallel plate Schottky monitor at using the:
Tektronix RSA5103B analyzer parameters:
Frequency = 39.8380 MHz
span = 50 kHz
RBW = 100 Hz
AcqBW = 78.12 kHz
The peak intensity is integrated power of the resolution bandwidth.
Trigger was set to machine 12, same as gas target "on" signal. Each file contains 40 seconds of recorded signal. Spectra were calculated using sensitive multitaper method with additional averaging of every 10 time frames.
After evaluation of several Schottky spectra, except from some fluctuations, there was no significant change in beam lifetime with or without gas target. They are in the same order of magnitude, that is, it seems that target interaction is not so prominent compared to the rest of the ring. with a xenon target the situation would be much different.
Attached are some plots. Also here are the results of the analyzed files in text form:
Target off: average 9.21 sec
118Te52+_-2020.03.21.08.35.40.854.tiq t= 9.24733015363724
118Te52+_-2020.03.21.08.36.50.173.tiq t= 8.070302067046537
118Te52+_-2020.03.21.08.37.58.916.tiq t= 9.309208734357618
118Te52+_-2020.03.21.08.39.07.690.tiq t= 7.94474492655749
118Te52+_-2020.03.21.08.40.16.459.tiq t= 11.510487780556794
Target on: average 10.9 secs
118Te52+_-2020.03.21.08.28.48.246.tiq t= 9.80012584127354
118Te52+_-2020.03.21.08.29.56.985.tiq t= 11.751070659928155
118Te52+_-2020.03.21.08.31.05.750.tiq t= 10.719205394679026
118Te52+_-2020.03.21.08.32.14.509.tiq t= 13.722763765411063
118Te52+_-2020.03.21.08.33.23.269.tiq t= 8.513007281444073 |
| Attachment 1: target_off.jpg
|
|
| Attachment 2: target_on.jpg
|
|
|
184
|
Sun Mar 22 12:26:15 2020 |
Esther, Ragan | Runs | run entry - run082, Uli working with gas jet target | |
Uli is still working with gas jet target however the vacuum problem with the SIS is resolved now.
open file : run082
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 12:25 , first file: run082_0001.lmd
run stop at , last file: run_0xxx.lmd
_______________________________________________________________________________
time: 12:25 pm.
ON Rates
Si_X: Hz
Si_Y: Hz
Xray_35: Hz
Xray_90: Hz
Xray_145: Hz
BaF_OR: Hz
Si voltage: 60.01 V
Si leakage current: 4.06 uA
SIS particles before: ~3.3e9
ESR current at injection: uA
ESR particles after decel.:
Target ON density: Uli is working on it
Base line for ESR current drops dpwn from 4 to -2 after restarting the ESR cycle
copy and repeat the above (below the line) every 30 minutes |
|
183
|
Sun Mar 22 12:01:44 2020 |
Esther, Ragan | General | Vacuum problem with SIS | |
There is some problem with the vacuum in SIS and thus data recording is stopped. |
|
182
|
Sun Mar 22 11:37:37 2020 |
Esther, Ragan | Runs | run entry - run081, Uli working with gas jet target | |
Uli is here to work with the gas jet target.
open file : run081
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 11:36 , first file: run081_0001.lmd
run stop at 12:01 , last file: run_0xxx.lmd
_______________________________________________________________________________
time: 11:36 pm.
ON Rates
Si_X: Hz
Si_Y: Hz
Xray_35: Hz
Xray_90: Hz
Xray_145: Hz
BaF_OR: Hz
Si voltage: 60.01 V
Si leakage current: 4.06 uA
SIS particles before: ~3.0e9
ESR current at injection: uA
ESR particles after decel.:
Target ON density: Uli is working on it
Base line for ESR current drops dpwn from 4 to -2 after restarting the ESR cycle
copy and repeat the above (below the line) every 30 minutes |
|
181
|
Sun Mar 22 11:28:02 2020 |
Esther, Ragan | Runs | run entry - run080 | |
open file : run080
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 10:55 , first file: run080_0001.lmd
run stop at 11:36: , last file: run075_0xxx.lmd
_______________________________________________________________________________
time: 11:30 pm.
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 0 Hz
Xray_90: 33 Hz
Xray_145: 26 Hz
BaF_OR: Hz
Si voltage: 60.01 V
Si leakage current: 4.06 uA
SIS particles before: ~3.0e9
ESR current at injection: 10 uA
ESR particles after decel.:
Target ON density: 1.8e13
Base line for ESR current drops dpwn from 4 to -2 after restarting the ESR cycle
copy and repeat the above (below the line) every 30 minutes |
|
180
|
Sun Mar 22 10:53:36 2020 |
Esther, Ragan | Runs | run entry - run080 | |
open file : run080
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 10:55 , first file: run080_0001.lmd
run stop at : , last file: run075_0xxx.lmd
_______________________________________________________________________________
time: 10:55 pm.
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 3 Hz
Xray_90: 48 Hz
Xray_145: 17 Hz
BaF_OR: Hz
Si voltage: 60.01 V
Si leakage current: 4.08 uA
SIS particles before: ~3.0e9
ESR current at injection: 10 uA
ESR particles after decel.:
Target ON density: 2.4e13
Base line for ESR current drops dpwn from 4 to -2 after restarting the ESR cycle
copy and repeat the above (below the line) every 30 minutes |
|
179
|
Sun Mar 22 10:28:27 2020 |
Esther, Ragan | General | run entry - run079 | |
The problem at UNILAC seems to have solved itself. Intensity is returning to normal. |
|
178
|
Sun Mar 22 10:22:27 2020 |
Esther, Ragan | Runs | run entry - run079 | |
open file : run079
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 09:55 , first file: run079_0001.lmd
run stop at : , last file: run075_0xxx.lmd
_______________________________________________________________________________
time: 10:25 pm.
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 2 Hz
Xray_90: 59 Hz
Xray_145: 28 Hz
BaF_OR: Hz
Si voltage: 60.01 V
Si leakage current: 4.07 uA
SIS particles before: ~3.0e9
ESR current at injection: 7 uA
ESR particles after decel.:
Target ON density: 2.4e13
Base line for ESR current drops dpwn from 4 to -2 after restarting the ESR cycle
copy and repeat the above (below the line) every 30 minutes |
|
177
|
Sun Mar 22 10:05:37 2020 |
Esther, Ragan | General | run entry - run079 | |
The intensity of beam from SIS is less due to some issues with UNILAc. |
|
176
|
Sun Mar 22 09:52:09 2020 |
Esther, Ragan | Runs | run entry - run079 | |
open file : run079
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 09:55 , first file: run079_0001.lmd
run stop at : , last file: run075_0xxx.lmd
_______________________________________________________________________________
time: 09:55 pm.
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 5 Hz
Xray_90: 52 Hz
Xray_145: 19 Hz
BaF_OR: Hz
Si voltage: 60.02 V
Si leakage current: 4.08 uA
SIS particles before: ~2.2e9
ESR current at injection: 6 uA
ESR particles after decel.:
Target ON density: 2.5e13
Base line for ESR current drops dpwn from 4 to -2 after restarting the ESR cycle
copy and repeat the above (below the line) every 30 minutes |
|
175
|
Sun Mar 22 09:21:55 2020 |
Esther | Runs | run entry - run078 | |
open file : run078
beam: 118Te52+
energy: 10 MeV/u
purpose: data with TARGET ON and SCRAPER is back again--> We expect to cut the Rutherford for now on.
Detector position (Si): -24 mm
run start at 08:55 , first file: run078_0001.lmd
run stop at : , last file: run075_0xxx.lmd
_______________________________________________________________________________
time: 09:23 pm.
ON Rates
Si_X: 0 Hz
Si_Y: 0 Hz
Xray_35: 0 Hz
Xray_90: 58 Hz
Xray_145: 15 Hz
BaF_OR: Hz
Si voltage: 60.02 V
Si leakage current: 4.04 uA
SIS particles before: ~2.2e9
ESR current at injection: 8 uA
ESR particles after decel.:
Target ON density: 2.5e13
Base line for ESR current drops dpwn from 4 to -2 after restarting the ESR cycle
copy and repeat the above (below the line) every 30 minutes |