[Clas12_verystrange] [EXTERNAL] Re: FT based issues

[nicholas]

Hi Raffaella, 

There also seems to be an issue with the out-bending FTBased bank. See Delta Beta plot on  slide 5 for Data 2. This indicates that the pion was used for start-time info instead of the electron in FT (Geraint has been taking the info from RECFT). I was under the impression that the RECFT bank was fixed, but this might indicate that there are still some issues remaining. 

Best regards, 
Nick

> On 17 Jun 2020, at 14:14, Raffaella De Vita <Raffaella.Devita at ge.infn.it> wrote:
> 
> Hi Geraint,
> I think the skim10 wagon used in the unbending data does not select events using the FT-based pid but the regular, forward-detector based pid, which is incorrect. I would recommend not to use it.
> Best regards,
> 	Raffaella
> 
>> On 17 Jun 2020, at 07:54, Geraint Clash <gc1108 at york.ac.uk> wrote:
>> 
>> Hello Raffaella,
>> 
>> When analysing the skim10 data I found that there was an issue with the reconstruction of pi minus and proton as seen in the slides attached. Specifically, I am attaching Delta Beta and beta vs momentum plots for protons, and pions, using three data sets as indicated in the slides. Was this issue known? 
>> 
>> Best regards.
>> Geraint Clash.
>> <FT_based_issues.pptx>
> 
> 
> 
> _______________________________________________
> Clas12_verystrange mailing list
> Clas12_verystrange at jlab.org
> https://mailman.jlab.org/mailman/listinfo/clas12_verystrange