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  proton-capture on 118Te  Not logged in ELOG logo
Message ID: 238     Entry time: Mon Mar 23 11:17:42 2020
Author: Laszlo,Sergey 
Category: Runs 
Subject: run entry - run101 
Year:  
open file : run101

beam: 124Xe54+
energy: 10 MeV/u

we run at MAX INTENSITY as we can: SIS was increased to its top, but unfortunately we still end up with 1.5e9 at injection from SIS. Sergey also optimized some stuff.

purpose: data with TARGET ON and SCRAPER OFF --> this leakage current spikes associated with primary scattering from the scraper edge seem to disappear, but we get still 10kHz rate on the detector a few sec after injection(this small "bump" 
after the peak in the Si current - see the picture below)

Detector position (Si): -27 mm
GE01DD1IG position (Scraper): 9 mm

run start at 10:12, first file: run101_0001.lmd
run stop  at , last file:  run_0xxx.lmd

_______________________________________________________________________________

time: 11:08

ON Rates
Si_X:       1 Hz
Si_Y:       1 Hz
Xray_35:    2 Hz
Xray_90:    62 Hz
Xray_145:   26 Hz
BaF_OR:     ---

Si voltage:          60.02 V  
Si leakage current:  4.29 uA with spikes for 3s long after injection roughly 10uA


SIS particles before:           2.7e8
ESR current at injection:       5.8e7?? (we see a bug: like the number of particles increases in the bunching phase)
ESR particles after decel.:     7e6? (it is hard to catch exactly)
Target ON density:              4.2e13

copy and repeat the above (below the line) every 30 minutes
Attachment 1: 2020-03-23_11-19-53-652.png  132 kB  | Hide | Hide all
2020-03-23_11-19-53-652.png
Attachment 2: injection_current_spike_withoutScraper.png  18 kB  | Hide | Hide all
injection_current_spike_withoutScraper.png
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