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  proton-capture on 118Te, Page 24 of 29  Not logged in ELOG logo
ID Date Author Category Subject Yeardown
  168   Sun Mar 22 05:54:34 2020 Dima, PierreRunsrun entry - run075 
open file : run075

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 05:54 , first file: run075_0001.lmd
run stop  at : , last file:  run074_0xxx.lmd

_______________________________________________________________________________

time: 05:54 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   3 Hz
Xray_90:   46 Hz
Xray_145:  18 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.07 uA


SIS particles before:           ~1.9e9
ESR current at injection:       22 uA
ESR particles after decel.:     
Target ON density:              3.3e13


copy and repeat the above (below the line) every 30 minutes
  169   Sun Mar 22 06:23:43 2020 Dima, PierreRunsrun entry - run075 
open file : run075

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 05:54 , first file: run075_0001.lmd
run stop  at : , last file:  run074_0xxx.lmd

_______________________________________________________________________________

time: 06:24 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   0 Hz
Xray_90:   58 Hz
Xray_145:  25 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.07 uA


SIS particles before:           ~1.9e9
ESR current at injection:       22 uA
ESR particles after decel.:     
Target ON density:              3.4e13

run 075 has been stopped because two brave warriors went to ESR for filling the LN in our detectors in the name of Physics!

copy and repeat the above (below the line) every 30 minutes
  170   Sun Mar 22 06:54:42 2020 Dima, PierreRunsrun entry - run076 
open file : run076

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 06:54 , first file: run076_0001.lmd
run stop  at : , last file:  run075_0xxx.lmd

_______________________________________________________________________________

time: 06:54 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   8 Hz
Xray_90:   48 Hz
Xray_145:  16 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.05 uA


SIS particles before:           ~2.5e9
ESR current at injection:       10 uA
ESR particles after decel.:     
Target ON density:              3.2e13
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
  171   Sun Mar 22 07:23:44 2020 Dima, EstherRunsrun entry - run076 
open file : run076

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 06:54 , first file: run076_0001.lmd
run stop  at : , last file:  run075_0xxx.lmd

_______________________________________________________________________________

time: 07:26 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   2 Hz
Xray_90:   56 Hz
Xray_145:  21 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.05 uA


SIS particles before:           ~2.6e9
ESR current at injection:       10 uA
ESR particles after decel.:     
Target ON density:              2.9e13
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
  172   Sun Mar 22 07:53:30 2020 Dima, EstherRunsrun entry - run077 
open file : run077

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 07:54 , first file: run077_0001.lmd
run stop  at : , last file:  run075_0xxx.lmd

_______________________________________________________________________________

time: 07:54 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   2 Hz
Xray_90:   38 Hz
Xray_145:  17 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.07 uA


SIS particles before:           ~2.5e9
ESR current at injection:       10 uA
ESR particles after decel.:     
Target ON density:              2.8e13
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
  173   Sun Mar 22 08:22:57 2020 EstherRunsrun entry - run077 
open file : run077

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 07:54 , first file: run077_0001.lmd
run stop  at : , last file:  run075_0xxx.lmd

_______________________________________________________________________________

time: 08:25 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   0 Hz
Xray_90:   46 Hz
Xray_145:  24 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.08 uA


SIS particles before:           ~3.8e9
ESR current at injection:       11 uA
ESR particles after decel.:     
Target ON density:              1.6e13
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
  174   Sun Mar 22 08:52:45 2020 EstherRunsrun 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: 08:55 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   7 Hz
Xray_90:   46 Hz
Xray_145:  23 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.09 uA


SIS particles before:           ~2.1e9
ESR current at injection:       8 uA
ESR particles after decel.:     
Target ON density:              2.6e13
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 EstherRunsrun 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
  176   Sun Mar 22 09:52:09 2020 Esther, RaganRunsrun 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
  177   Sun Mar 22 10:05:37 2020 Esther, RaganGeneralrun entry - run079 
The intensity of beam from SIS is less due to some issues with UNILAc.
  178   Sun Mar 22 10:22:27 2020 Esther, RaganRunsrun 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
  179   Sun Mar 22 10:28:27 2020 Esther, RaganGeneralrun entry - run079 
The problem at UNILAC seems to have solved itself. Intensity is returning to normal.
  180   Sun Mar 22 10:53:36 2020 Esther, RaganRunsrun 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
  181   Sun Mar 22 11:28:02 2020 Esther, RaganRunsrun 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
  182   Sun Mar 22 11:37:37 2020 Esther, RaganRunsrun 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
  183   Sun Mar 22 12:01:44 2020 Esther, RaganGeneralVacuum problem with SIS 
There is some problem with the vacuum in SIS and thus data recording is stopped.
  184   Sun Mar 22 12:26:15 2020 Esther, RaganRunsrun 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
  185   Sun Mar 22 12:50:00 2020 ShahabRunsLife 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
  186   Sun Mar 22 12:53:43 2020 LaszloGeneralquick 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.
  187   Sun Mar 22 13:22:44 2020 Esther, RaganRunsrun 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
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