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Re: FRS Calibration Issue [message #17336 is a reply to message #17330]

Mon, 22 September 2014 19:50

SMilne
Messages: 30
Registered: July 2014
Location: York

continuous participant

From: *york.ac.uk

Hi Liliana!

Thank you very much for your detailed response! So I had a play around with calibrating them Brho values, but it seems they pretty much were fine as they were and only had a very small change on my A/Q value. However, something which had more of an impact was the fact I had been (possibly incorrectly?) including degrader material offsets in my LISE simulations. Not including these, and re-calibrating the TOF, beta and MUSIC seems to give me better results. I'm currently getting between 2.065 and 2.067 A/Q now for my 58Ni calibration points, compared to the 2.071 expected, see below for example.

index.php?t=getfile&id=8096&private=0

I did as you suggested and added these lines to the code, as well as for Sc41. I only performed a rough calibration (just to test it) since I don't currently have Go4 installed and I'm just using root and don't know how to fit a straight line to these plots. So, I drew a straight line manually in ROOT which seemed about right for the trends in both graphs and then extracted the coefficients for the TOFsystem.cal file. Below I've attached my uncalibrated plots (just so I know they are OK, one seems very flat?) and then the FRS PID using the scintillator positions which you can compare with the PID above using the TPCs. How does everything seem to you?

index.php?t=getfile&id=8097&private=0

Many thanks,
Scott

Attachment: 58Ni-Cal1-TPC.png
(Size: 32.48KB, Downloaded 660 times)
Attachment: Sc21-PosCal.png
(Size: 19.47KB, Downloaded 624 times)
Attachment: Sc41-PosCal.png
(Size: 26.76KB, Downloaded 566 times)
Attachment: 58Ni-Cal1-Sci.png
(Size: 33.38KB, Downloaded 628 times)
Attachment: FRScalibration2.gnumeric
(Size: 595.34KB, Downloaded 281 times)

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[Message index]

		FRS Calibration Issue By: SMilne on Tue, 22 July 2014 19:14
		Re: FRS Calibration Issue By: mlcortes on Thu, 24 July 2014 09:48
		Re: FRS Calibration Issue By: SMilne on Thu, 24 July 2014 14:52
		Re: FRS Calibration Issue By: mlcortes on Thu, 24 July 2014 15:19
		Re: FRS Calibration Issue By: SMilne on Wed, 17 September 2014 14:22
		Re: FRS Calibration Issue By: mlcortes on Wed, 17 September 2014 14:34
		Re: FRS Calibration Issue By: SMilne on Wed, 17 September 2014 16:01
		Re: FRS Calibration Issue By: mlcortes on Fri, 19 September 2014 08:01
		Re: FRS Calibration Issue By: SMilne on Thu, 24 July 2014 18:06
		Re: FRS Calibration Issue By: SMilne on Fri, 19 September 2014 15:31
		Re: FRS Calibration Issue By: mlcortes on Sun, 21 September 2014 21:59
		Re: FRS Calibration Issue By: SMilne on Mon, 22 September 2014 19:50
		Re: FRS Calibration Issue By: mlcortes on Wed, 24 September 2014 00:10
		Re: FRS Calibration Issue By: SMilne on Wed, 24 September 2014 12:05
		Re: FRS Calibration Issue By: SMilne on Wed, 24 September 2014 12:14
		Re: FRS Calibration Issue By: mlcortes on Wed, 14 January 2015 09:35
		Re: FRS Calibration Issue By: SMilne on Fri, 16 January 2015 01:45
		Re: FRS Calibration Issue By: SMilne on Fri, 16 January 2015 01:53
		Re: FRS Calibration Issue By: mlcortes on Fri, 16 January 2015 13:49
		Re: FRS Calibration Issue By: SMilne on Fri, 16 January 2015 19:35
		Re: FRS Calibration Issue By: mlcortes on Mon, 19 January 2015 13:10
		Re: FRS Calibration Issue By: SMilne on Mon, 19 January 2015 19:08
		Re: FRS Calibration Issue By: mlcortes on Wed, 28 January 2015 10:10
		Re: FRS Calibration Issue By: SMilne on Tue, 10 February 2015 17:09
		Re: FRS Calibration Issue By: mlcortes on Thu, 12 February 2015 10:05
		Re: FRS Calibration Issue By: SMilne on Thu, 12 February 2015 13:59
		Re: FRS Calibration Issue By: mlcortes on Tue, 17 February 2015 12:06
		Re: FRS Calibration Issue By: SMilne on Tue, 17 February 2015 13:23
		Re: FRS Calibration Issue By: mlcortes on Tue, 17 February 2015 15:31
		Re: FRS Calibration Issue By: SMilne on Tue, 17 February 2015 17:20
		Re: FRS Calibration Issue By: mlcortes on Tue, 17 February 2015 17:29
		Re: FRS Calibration Issue By: SMilne on Thu, 26 February 2015 01:12
		Re: FRS Calibration Issue By: mlcortes on Mon, 02 March 2015 17:54
		Re: FRS Calibration Issue By: SMilne on Wed, 20 May 2015 12:19
		Re: FRS Calibration Issue By: SMilne on Fri, 22 May 2015 10:36
		Re: FRS Calibration Issue By: mlcortes on Fri, 22 May 2015 13:27

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