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Re: FRS Calibration Issue [message #17767 is a reply to message #17090]

Fri, 16 January 2015 01:53

SMilne
Messages: 30
Registered: July 2014
Location: York

continuous participant

From: *dsl.in-addr.zen.co.uk

So upon second inspection of the calibrated FRS ToF plot (I don't know why I ignored this first time round!), there is this weird single bin stack at ~210ns.

index.php?t=getfile&id=8246&private=0

So what I did was plot my calibrated FRS PID (using either the TPCs or the Scintillators) with a gate on FRS ToF<209ns, and what can be seen is that it removes the weird 'blob' on the right hand side which does not appear to correspond with any isotope of Ti. The slightly 'repeated' FRS PID 'plots' as you can see in my post (2 previous to yours) seems to be the result of those very small separated 'bumps' in the FRS ToF spectrum at lower values.

index.php?t=getfile&id=8247&private=0

I'll probably try produce a gamma spectrum gated on this 'blob' later and see if it corresponds with anything.

So I guess my follow up questions would be:
- What is the reason for this single bin stack in the FRS ToF spectrum?
- Do my calibrations look fine other than this? The only issues I see are that my Z seems to have an offset of ~0.5 and some of the 'blobs' appear slightly doubled.

Thanks!
Scott

Attachment: 46Ti-ToF.png
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Attachment: 46Ti-FRSID-TPCs.png
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Attachment: 46Ti-FRSID-TPCs-Corrected.png
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Attachment: 46Ti-FRSID-Sci.png
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Attachment: 46Ti-FRSID-Sci-Corrected.png
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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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