[Clas12_first_exp] Validation of new DC-roads for the electron trigger

[Valery Kubarovsky]

Dear Maxime, 

You are absolutely right. It is not only new trigger but trigger with new DC-roads as well. 
We have to validate it. It will not take long time. The new validation trigger is ready 

trigger_v22_0_outb_dc_validation.trg 

It has only electron trigger (the others don't use DC-roads at all) without DC (trigger bit 7). 

The other triggers are masked. 

Latifa, we need about 30 mins of beam time with reasonable current. Can't say right now what it is. 
This run has to be cooked as soon as possible. Rafo will take a look after cook will be done. 

We will start the production right after we will finish data taking with validation trigger. 

Regards, 
Valery 
. 

> From: "mdefurne" <mdefurne at jlab.org>
> To: "clas12 first exp" <clas12_first_exp at jlab.org>
> Sent: Tuesday, November 6, 2018 3:54:16 PM
> Subject: Re: [Clas12_first_exp] No RC meeting today

> Dear Latifa,

> Is the new trigger the one with DC roads with new geometry for
> outbending negatives? Based on which criteria/comparison will it be
> tested since we were in negative inbending before?

> Kind regards,

> Maxime

> On 06/11/2018 19:31, Latifa Elouadrhiri wrote:
> > Dear all,

> > We are expecting beam shortly after the machine RF recovery. The Torus
> > magnet is set for electron outbending. The solenoid is powered up. The
> > hall is set to receive beam to the tagger. and we are ready just
> > waiting for beam. Once the beam is back we will perform Moller run for
> > both HWP IN and OUT and we will tune the beam to the FC. Once the beam
> > is tuned and all the rates are as expected. We will test the new
> > trigger and optimize the beam current for the outbending
> > configuration. Then we will move to production with new trigger and
> > optimized beam current based on trigger rate and DC/detector occupancy.

> > Please let me know if you have any questions.

> > Best regards,

> > Latifa

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