GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » NUSTAR » NUSTAR PRESPEC » FRS - TPC Calibrations (Position Calibration Issues)
Re: FRS - TPC Calibrations [message #18301 is a reply to message #18300] Wed, 03 June 2015 15:05 Go to previous messageGo to previous message
thuyuk is currently offline  thuyuk
Messages: 68
Registered: July 2014
continuous participant

From: *ific.uv.es
Hi Liliana,

thanks for the information and the processor that you use. the manual of TPC is a different story and it tells nothing more than what you wrote here: 2 outputs of x and 4 outputs of y Smile Thank you anyway!

I just noticed that inside the source, there are the outputs xc and yc which are calibrated x and y outputs. I included them in the config file.

I think I should tell you more at this point for the sake of less complicity of the things:

1. The fiber mask signals are not processed in the prespec code, while they are visible in the previous "new_prespec_Go4" code.
2. The x:y of TPCs and the fiber mask plots are good and almost have fine calibration at new_prespec_Go4.
3. When I replay the experimental data, the calibration get lost at new_prespec_Go4.
4. I cannot do the calibration with the prespec code since I cannot see fiber mask signals when I replay the calibration data with mask.
5. The very same calibration coefficients which work in the new_prespec_Go4 code also work with the horizontal calibration but not for the vertical in the prespec code.

Now if we check out the plots under above circumstances:

TPC 4.2 at new_prespec_Go4:

index.php?t=getfile&id=8417&private=0



x:y and xc:yc at prespec (top: TPC 4.1; bottom: TPC 4.2):

index.php?t=getfile&id=8418&private=0


Fiber Mask at new_prespec_Go4:

index.php?t=getfile&id=8419&private=0



Thanks!
Tayfun

[Updated on: Wed, 03 June 2015 15:06]

Report message to a moderator

 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: FRS-AGATA-LYCCA dead time
Next Topic: Scattering Angle Cut
Goto Forum:
  


Current Time: Mon Nov 11 08:42:49 CET 2024

Total time taken to generate the page: 0.00773 seconds