[Clas12_first_exp] Consideration for the torus polarity flip for the remaining of the run

[markov]

Dear All,
this is data from Andrey:

spring18 outbeding 10 23.719 mC
spring18 inbeding 10 84.123 mC
fall18 inbeding 10 47.283 mC 
fall18 outbeding 10 38.824 mC 
spring19 inbeding 10 32.41 mC

Outbening: 62.543 
Inbending: 163.816 
Outbending fraction: 0.2763
Inbending fraction: 0.7237 


you can look there for original data

https://clas12mon.jlab.org/rga/stats/timeline/ <https://clas12mon.jlab.org/rga/stats/timeline/>

Best regards, Nick.
> On Apr 9, 2019, at 3:22 PM, Eugene Pasyuk <pasyuk at jlab.org> wrote:
> 
> This actually relevant for anyone interested in detecting Lambda decays, add Very Strange to the list.
>  
> -Eugene 
>  
>  
> From: Clas12_first_exp <clas12_first_exp-bounces at jlab.org> on behalf of Anselm Vossen <avossen at jlab.org>
> Date: Tuesday, April 9, 2019 at 12:35 
> To: Marco Mirazita <Marco.Mirazita at lnf.infn.it>, Stepan Stepanyan <stepanya at jlab.org>
> Cc: clas12 exp <clas12_first_exp at jlab.org>
> Subject: Re: [Clas12_first_exp] Fwd:Consideration for the torus polarity flip for the remaining of the run
>  
> I second Marco's points about lambda's and di-hadrons.
> 
>  
> 
> I am also interested in polarized lambda studies (pending analysis proposal) which also relies on substantial outbending set. 
> 
>  
> 
> Best,
> 
>  
> 
> Anselm
> 
> From: Clas12_first_exp <clas12_first_exp-bounces at jlab.org> on behalf of Marco Mirazita <Marco.Mirazita at lnf.infn.it>
> Sent: Monday, April 8, 2019 12:41:46 PM
> To: Stepan Stepanyan
> Cc: clas12 first exp
> Subject: Re: [Clas12_first_exp] Fwd:Consideration for the torus polarity flip for the remaining of the run
>  
> Dear all,
> for the E12-06-112A/E12-09-008A experiment (Lambda in SIDIS) the 
> critical point is the acceptance for low energy pi-, which is low with 
> inbending field.
> I attached a plot of the MM(e Lambda X) simulations for inbending (red) 
> and outbending (black). The difference will be less striking at high Q2 
> but it is still there.
> For E12-06-112B/E12-09-008B (dihadron production in SIDIS) we will have 
> two pions with opposite charge in the final state, therefore having both 
> inbending and outbending data will help in understanding the 
> systematics.
> I understood that the agreement was to have 75% of the data with 
> inbending and 25% with outbending, is it still so?
> Best regards,
> Marco
> 
> 
> 
> 
> Il 2019-04-07 22:03 Stepan Stepanyan ha scritto:
> > Dear all,
> > 
> > For J/psi and also for the high mass (Q’2>5 GeV) TCS, the acceptance
> > for the 3-particle final states (-++) in FD for outbending case is ~x2
> > smaller compared to the inbending setting (see below). So, I propose
> > to continue with intending for remaining 6 days (18 shifts).
> > 
> > Will be good to see similar motivations for inbending vs. outbending
> > configurations for other approved RG-A experiments.
> > 
> > We need to see also accumulated charge for these two settings to date
> > for RG-A production runs (>10 GeV).
> > 
> > Also, assuming we will need to do low luminosity, random trigger, and
> > empty target runs with the new setting, real production run time with
> > outbending polarity will be bit more than 5 days. Is there a real
> > benefit to have one more setting (energy/polarity) with small amount
> > of data?
> > 
> > Regards, Stepan
> > 
> >> Begin forwarded message:
> >> 
> >>> Hi Stepan,
> >>> 
> >>> Here is the photon energy dependence of the acceptance with 5
> >> million
> >>> generated events.
> >>> 
> >>> -Joseph
> > 
> > 
> > _______________________________________________
> > Clas12_first_exp mailing list
> > Clas12_first_exp at jlab.org
> > https://mailman.jlab.org/mailman/listinfo/clas12_first_exp <https://mailman.jlab.org/mailman/listinfo/clas12_first_exp>_______________________________________________
> Clas12_first_exp mailing list
> Clas12_first_exp at jlab.org
> https://mailman.jlab.org/mailman/listinfo/clas12_first_exp

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/clas12_first_exp/attachments/20190409/8266f584/attachment.html>