[Halld_src] [EXTERNAL] Re: [New Logentry] SRC accumulated statistics

[Holly Szumila-Vance]

Hi Eli,

We have offline monitoring which applies reasonable cuts to extract SRC physics, and we monitor those event rates. They are kept here: https://docs.google.com/spreadsheets/d/1s5l2EgSeTOqRaSqvdbCpysgxTtoJn14O3SD3ccpGAJ8/edit?usp=sharing

Although it is still a few days out of date.

-Holly 

On 11/21/21, 11:07 PM, "halld_src on behalf of Eliezer Piasetzky" <halld_src-bounces at jlab.org on behalf of eip at tauphy.tau.ac.il> wrote:

    
    Hi,
    
    For SRC the relevant events are with large pmiss (let say pmiss>300 MeV/c)
    
    To  estimate  SRC statistic we should (even online) try to estimate
    how many QE pi- or rho- production events with Pmiss>300 MeV/c we have.
    Counting triggers or meanfield (low pmiss) dominate events is not so
    relevnt and migth even be misleading.
    
       best regards
         eli
    
    
    On Sun, 21 Nov 2021, somov at jlab.org wrote:
    
    >                                           SRC accumulated statistics
    >
    >  *  Edit
    >  *  Delete
    > 
    > Lognumber 3947824. Submitted by somov on Sun, 11/21/2021 - 21:31.
    > 
    > Logbooks:
    > HDLOG HDTRIGGER
    > Entry Makers:
    > somov
    > 
    > I put a summary of statistics accumulated at different run conditions to
    > 
    > https://halldweb.jlab.org/SRC/production_2021
    > 
    > (it's linked to the SRC run wiki page)
    > 
    > So far, we have been getting along pretty well (with a good accelerator efficiency)
    > and completed about 57% of the experiment (based on the physics data sample
    > collected).
    > 
    > We are currently taking data on LD target at 140 nA beam current, as planned. The
    > total trigger rate is about 67 kHz and the live time is 96%.
    > 
    > 
    >
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