Analysis discussion meeting

Europe/Zurich
https://psich.zoom.us/j/67898862738?pwd=YzhWSC90Wm1BRTEyYm1OUmhFQjUwdz09

https://psich.zoom.us/j/67898862738?pwd=YzhWSC90Wm1BRTEyYm1OUmhFQjUwdz09

Anastasia:

Work on checking the differences between direct stopping and transfer mechnism in uranium and thorium

For 2p-1s, multiplets of hyperfine peaks seem to be at the same location and same relative intensities

5g-4f is substantially smaller for transfer than for direct stopping --> And relative efficiency within ~10% the same

Will continue to look into it

 

Michael:

Expanding roofit code: inclusion of peak doublets with fixed lineshape and energy difference

Leaving sigma = a + bE + c sqrt(E) parameters free doesn't converge --> Fix parameters from estimates with regular fitting from mu - sigma

Evaluate systematics with literature peak we leave out of calibration

Theory meeting: Lighter elements with shell model and heavier with deformed QRPA --> Not yet a no, so for now hopefull

 

Marie:

Hard drive on its way to PSI for Lead+Gold data (via Judith, who'll pass it to Klaus)

Geant4, got a basic thing for almost all detectors --> Can PSI team measure end cap dimensions

Comment Andreas: Might have step file for miniball, will check

Determining thresholds for scintillators

 

Thomas:

Purchase new detectors:

  • Approval for refurbishment of old 90% detector (new preamp, casing, dewar)
  • Final stretch for 2 clovers

Target preparation actinides: Talked with relevant people. Thorium target should exist, material for some new targets is there (but methods may not be fully ready), for others we'll need to produce (for example at aronax)

 

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