AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40
  CARME  ELOG logo
Message ID: 207     Entry time: Thu Feb 17 18:19:16 2022
Author: JM, CB, SD 
Subject: Alpha Background run 46 

Both GSI vacuum group and edinburgh ion gauges OFF

Fees power cycled. All system checks OK.

Writing to file, alpha background overnight.

Moved detector IN 2mm. Noise appears reduced with any distance moved in so overnight spectra to be taken while IN. Not moving further in as possible beam tomorrow.

22:44

Leakage current stable, slowly decreasing ~3.57 uA (attachment 1)

Statistics look OK

Temperatures OK

System wide check all pass - OK

Noise appears much reduced on spectrum Browser channels. (attachement 2). Compared to same plot on elog 197

XYtotal per pixel (attachment 3)

Ex histogram (attachment 4)

 

Attachment 1: 2022-02-17_22-41-45-leakageCurrent.png  20 kB  Uploaded Thu Feb 17 21:45:32 2022  | Hide | Hide all
2022-02-17_22-41-45-leakageCurrent.png
Attachment 2: 2022-02-17_22-51-07-aida1-3*L.png  233 kB  Uploaded Thu Feb 17 21:52:49 2022  | Hide | Hide all
Cannot create thumbnail, please check ImageMagick installation
Attachment 3: 2022-02-17_22-54-06-XYTotal.png  225 kB  Uploaded Thu Feb 17 21:58:16 2022  | Hide | Hide all
2022-02-17_22-54-06-XYTotal.png
Attachment 4: 2022-02-17_22-56-38-ExHist.png  195 kB  Uploaded Thu Feb 17 21:58:30 2022  | Hide | Hide all
2022-02-17_22-56-38-ExHist.png
ELOG V3.1.4-unknown