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  proton-capture on 118Te, Page 22 of 29  Not logged in ELOG logo
New entries since:Thu Jan 1 01:00:00 1970
ID Date Author Category Subject Yeardown
  127   Sat Mar 21 13:24:10 2020 LaszloRunsrun entry - run063 
open file : run063

beam: 118Te52+
energy: 10 MeV/u

purpose: data with TARGET ON, we had to stop becasue Ulli was noticing some strange effects with the target density. He needs now time to optimize that.

Detector position (Si): -24 mm

run start at 15:04 , first file: run063_0001.lmd
run stop  at 15:04:21 , last file:  run063_0xxx.lmd

_______________________________________________________________________________

time: 15:04 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   2 Hz
Xray_90:   25 Hz
Xray_145:  30 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.10 uA


SIS particles before:           ~2e9
ESR particles at injection:     estimated ~1e6
ESR particles after decel.:     
Target ON density:              1.52e13


copy and repeat the above (below the line) every 30 minutes
  128   Sat Mar 21 13:37:53 2020 Laszlo MCP can monitor target 
now with the MCP we can see clearly the effect of the target :) (scintillation?)
so we want to scan through the target thickness with the beam and choose the best position afterwards.

We are making 3shoots for each bumb position (we change the bumb to make the intersection between beam and target) starting at ~14:

the data will be saved at the lxg1299 data.local2/hillenbrand/Laszlo folder
  129   Sat Mar 21 13:44:16 2020 Pierre-MichelDetectorsRecoil detector 
We turn on Recoil detector, to use it as a monitor for target overlap.

MCP front -2500 V for highest signal rate. 
(Used to be -2250 V during previous beam time.)

DAQ triggered with 1 kHz clock in 2nd trigger input.
(2nd trigger used to be x-rays in previous beam time.)

The picture shows the increase of the Recoil rate when increasing the voltage from 2250 V to 2500 V in steps of 50 V. The last shot was taken without beam, so just target on.
Attachment 1: Recoil.pdf
Recoil.pdf
  130   Sat Mar 21 14:52:05 2020 LaszloGeneraltarget optimization 
previous position of the beam at target was -3mm (for the night position)
max. intensity position of the beam at target 1s -1mm. --> now it is set to this position

now Ulli also increasing the density of the jet. Right now Ulli is warming the noozle. --> takes 1hour roughly.
Earlier: 1.4E13
Now: 
Attachment 1: IMG_20200321_145105.jpg
IMG_20200321_145105.jpg
Attachment 2: IMG_20200321_145059.jpg
IMG_20200321_145059.jpg
  132   Sat Mar 21 15:23:57 2020 SergiyRunsrun entry - run063 
open file : run063

beam: 118Te52+
energy: 10 MeV/u

purpose: data with TARGET ON, we had to stop becasue Ulli was noticing some strange effects with the target density. He needs now time to optimize that.

Detector position (Si): -24 mm

run start at 15:04 , first file: run063_0001.lmd
run stop  at 15:04:21 , last file:  run063_0xxx.lmd

_______________________________________________________________________________

time: 15:04 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   2 Hz
Xray_90:   25 Hz
Xray_145:  30 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.10 uA


SIS particles before:           ~2e9
ESR particles at injection:     estimated ~1e6
ESR particles after decel.:     
Target ON density:              1.52e13


copy and repeat the above (below the line) every 30 minutes
  133   Sat Mar 21 15:26:49 2020 LaszloGeneralSCRAPER is ON use again 
Yuri puts back the scraper (Egelhof 1 - GE01DD1IG) into position = +19. (where it was in the evening)
  134   Sat Mar 21 15:30:34 2020 SergiyGeneralgo into the ESR 
We are going into the ESR to check the electronics.
Use calibration sources (133Ba etc).
  135   Sat Mar 21 17:21:57 2020 LaszloGeneralnew Target density 
Ulli and Nikos managed to set the target density to ~7E13  at 51K temperature

The cycle is checked again, it seems fine.
  136   Sat Mar 21 17:30:08 2020 SergiyRunsrun entry - run064 
beam: 118Te52+
energy: 10 MeV/u

purpose: data with TARGET ON

Detector position (Si): -24 mm

run start at 17:30 , first file: run064_0001.lmd
run stop  at xx:xx , last file:  run0xx_0xxx.lmd


_______________________________________________________________________________

time: 17:30 .

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:    2-3 Hz
Xray_90:   29 Hz
Xray_145:  17 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.04 uA


SIS particles before:           2.5e9
ESR particles at injection:     estimated ~1.3e6
ESR particles after decel.:     
Target ON density:              1.34e13


copy and repeat the above (below the line) every 30 minutes
  137   Sat Mar 21 17:32:12 2020 SergiyRunsrun entry - run064 
open file : run064

beam: 118Te52+
energy: 10 MeV/u

purpose: data with TARGET ON. The target is back ON at 7e13.

Detector position (Si): -24 mm

run start at 17:30 , first file: run064_0001.lmd
run stop  at 15:04:21 , last file:  run064_0xxx.lmd

_______________________________________________________________________________

time: 17:30 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   2 Hz
Xray_90:   25 Hz
Xray_145:  30 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.10 uA


SIS particles before:           ~2e9
ESR particles at injection:     estimated ~1e6
ESR particles after decel.:     
Target ON density:              1.52e13


copy and repeat the above (below the line) every 30 minutes
  138   Sat Mar 21 17:34:10 2020 SergiyGeneralRecoils 
We started recording the data from the recoils using the MCP from Pierre-Michael's experiment. 
17:30 File opened: recoils1662.lmd.
data is stored at lxg1299: data.local2/hillenbrand/Laszlo
  140   Sat Mar 21 18:13:22 2020 ShahabGeneralrough comparison gas target off and on 
rough comparison of life time at 10 MeV/u when target off with on. more noise in background means weaker signal.
Attachment 1: target_effect.jpg
target_effect.jpg
  139   Sat Mar 21 18:13:22 2020 SergiyRunsrun entry - run064 
open file : run064

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 17:42 , first file: run064_0001.lmd
run stop  at  , last file:  run064_0xxx.lmd

_______________________________________________________________________________

time: 18:12 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   1 Hz
Xray_90:   35 Hz
Xray_145:  14 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.10 uA


SIS particles before:           ~3.1e9
ESR particles at injection:     n.n.
ESR particles after decel.:     
Target ON density:              7e13


copy and repeat the above (below the line) every 30 minutes
  141   Sat Mar 21 18:42:43 2020 SergiyRunsrun entry - run065 
open file : run065

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 18:42 , first file: run065_0001.lmd
run stop  at  , last file:  run064_0xxx.lmd

_______________________________________________________________________________

time: 18:42 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   3 Hz
Xray_90:   30 Hz
Xray_145:  15 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.08 uA


SIS particles before:           ~3.1e9
ESR particles at injection:     n.n.
ESR particles after decel.:     
Target ON density:              6.8e13


copy and repeat the above (below the line) every 30 minutes
  142   Sat Mar 21 19:11:33 2020 SergiyRunsrun entry - run065 
open file : run065

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 18:42 , first file: run065_0001.lmd
run stop  at 19:42 , last file:  run064_0xxx.lmd

_______________________________________________________________________________

time: 19:12 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   5 Hz
Xray_90:   22 Hz
Xray_145:  22 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.08 uA


SIS particles before:           ~2.6e9
ESR particles at injection:     n.n.
ESR particles after decel.:     
Target ON density:              6.9e13


copy and repeat the above (below the line) every 30 minutes
  143   Sat Mar 21 19:42:33 2020 SergiyRunsrun entry - run066 
open file : run066

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 19:42 , first file: run066_0001.lmd
run stop  at  , last file:  run065_0xxx.lmd

_______________________________________________________________________________

time: 19:42 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   2 Hz
Xray_90:   27 Hz
Xray_145:  19 Hz
BaF_OR:     Hz

Si voltage:          60.02 V  
Si leakage current:  4.07 uA


SIS particles before:           ~3.1e9
ESR particles at injection:     n.n.
ESR particles after decel.:     
Target ON density:              6.9e13


copy and repeat the above (below the line) every 30 minutes
  144   Sat Mar 21 20:11:59 2020 SergiyRunsrun entry - run066 
open file : run066

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 19:42 , first file: run066_0001.lmd
run stop  at  , last file:  run065_0xxx.lmd

_______________________________________________________________________________

time: 20:12 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   4 Hz
Xray_90:   28 Hz
Xray_145:  14 Hz
BaF_OR:     Hz

Si voltage:          60.01 V  
Si leakage current:  4.08 uA


SIS particles before:           ~2.9e9
ESR particles at injection:     n.n.
ESR particles after decel.:     
Target ON density:              6.5e13


copy and repeat the above (below the line) every 30 minutes
  145   Sat Mar 21 20:39:38 2020 Sergiy,Ruijiu Runsrun entry - run067 
open file : run067

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 20:41 , first file: run067_0001.lmd
run stop  at 20:39 , last file:  run066_0xxx.lmd

_______________________________________________________________________________

time: 20:41 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   2 Hz
Xray_90:   43 Hz
Xray_145:  35 Hz
BaF_OR:     Hz

Si voltage:          60.01 V  
Si leakage current:  4.08 uA


SIS particles before:           ~2.9e9
ESR particles at injection:     n.n.
ESR particles after decel.:     
Target ON density:              6.43e13


copy and repeat the above (below the line) every 30 minutes
  146   Sat Mar 21 21:11:46 2020 Sergiy,Ruijiu Runsrun entry - run067 
open file : run067

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 20:41 , first file: run067_0001.lmd
run stop  at 20:39 , last file:  run066_0xxx.lmd

_______________________________________________________________________________

time: 21:12 pm.

ON Rates
Si_X:      0 Hz
Si_Y:      0 Hz
Xray_35:   4 Hz
Xray_90:   29 Hz
Xray_145:  25 Hz
BaF_OR:     Hz

Si voltage:          60.01 V  
Si leakage current:  4.08 uA


SIS particles before:           ~2.5e9
ESR particles at injection:     n.n.
ESR particles after decel.:     
Target ON density:              6.e13


copy and repeat the above (below the line) every 30 minutes
  147   Sat Mar 21 21:36:06 2020 JanRunstarget incident 
in run 66 or 67 we had a single ESR cycle for which the target didn't switch off for new injection and deceleration etc.
Very likely the DAQ also didn't get an OFF signal and collected OFF data to the TRIGGER=1 (ON data) branch.
As a consequence we collected about ~100 counts on the Si in one shot, which was about ~20 counts before this shot.

attached:
1.picture of the target density and beam current at this time.
Attachment 1: run67_target_incident.png
run67_target_incident.png
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