[Clas12_first_exp] No RC meeting today

[Mac Mestayer]

Hello all;

The DC HV was 8,9,9 and thresholds 30,45,45.
Last spring the HV was 8,10,9 and thresholds 30,65,45.
Please note that for reg.2 a HV setting of 10 and threshold of 65
should be equivalent to the present HV setting of 9 and threshold of 45.

- Mac

----- Original Message -----
From: "Stepan Stepanyan" <stepanya at jlab.org>
To: "Francois-Xavier Girod" <fxgirod at jlab.org>
Cc: "clas12 first exp" <clas12_first_exp at jlab.org>
Sent: Monday, October 8, 2018 7:26:00 AM
Subject: Re: [Clas12_first_exp] No RC meeting today

FX, 

Will be good to know if (a) DC HV and thresholds of these luminosity scan runs were the same as for the spring luminosity scan runs, and (b) which software release was used to process the data (last studies of the spring luminosity scan were done with the version of the code that was used for DNP data processing). 

Stepan 




On Oct 7, 2018, at 6:41 PM, Francois-Xavier Girod < fxgirod at jlab.org > wrote: 

Dear all 

I looked at the ratio of events with positive time based tracks normalized at 2 nA vs beam current from the luminosity scan, and posted the corresponding plot, with separated sectors, here 
https://logbooks.jlab.org/entry/3605590 

At 45 nA I found a ratio of about 75% +/- 5% depending on the sector number 

Best regards 
FX 

Best regards 
FX 

On Sun, Oct 7, 2018 at 8:34 PM Rafayel Paremuzyan < rafopar at jlab.org > wrote: 


Dear all, 

We didn't get much beam since yesterday, 
MCC is still working on resolving Accelerator related issues( RF 
separator, RF zone 1L03). 
I think there is no much to discuss for today. 
Instead will be good if we work on the analysis of the special runs 
(random, packed data, Lumi scans), 
and in tomorrow's RC meeting discuss what decisions we should make in 
terms of trigger/bit packing and the beam current. 

Rafo 


On 10/06/2018 09:42 AM, Rafayel Paremuzyan wrote: 
> Dear all, 
> 
> We took data up to 2:am this night and after that south linac had 
> vacuum problems, 
> which was solved half hour ago. 
> We expect to get the beam soon, and the plan is to continue data 
> taking through this weekend. 
> 
> There is no important items to discuss today. 
> I will update you with the run status tomorrow by e-mail. 
> 
> Rafo 

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