[Clas12_calcom] [EXTERNAL] RG-K latest pass0 - please take a look

[L Smith]

Dear Annalisa,

The new PCAL/ECIN/ECOU timing residual timelines (PCAL below) show run dependent excursions from zero at run points that correspond to beam energy change and other incidents of RF adjustments (I assume).  The excursions are on the order of 50-70 ps (similar to those seen in CND below), which is well below the average timing resolution for e- of 300-350 ps for PCAL  All other timelines are within reasonable QA limits.

Cole







> On Jul 18, 2023, at 2:45 PM, Annalisa D'Angelo <annalisa.dangelo at roma2.infn.it> wrote:
> 
> Dear CLAS12 detector subsystems Calibrators Group Leaders,
> RG-K is at the end of the pass2 calibration procedure.
> 
> You can find the latest RGK timelines at: 
> 
> https://clas12mon.jlab.org/rgk/pass0/v0.27/tlsummary/ <https://clas12mon.jlab.org/rgk/pass0/v0.27/tlsummary/>
> https://clas12mon.jlab.org/rgk/pass0/v0.27_qa/tlsummary/ <https://clas12mon.jlab.org/rgk/pass0/v0.27_qa/tlsummary/>
> Please take a look at the obtained timelines, to validate the quality of the calibration.
> 
> Should all of you be satisfied with the present results we could assess the latest pass0 as the "final" one and proceed with the Pass2 cooking review.
> 
> Please reply to my message at your earliest convenience.
> 
> For your info, the following table contains a description of the different data taking conditions:
> 
> Epoch
> Beam Energy (GeV)
> Run Range
> Beam Current
> nA
> Trigger
> Comment
> L1
> 7.546
> 5674-5684
> 10,20,30,45
> V0
> Trigger Test & Lumi Scan
> L2
> 7.546	5689-5693
> 5,20,30,40,50
> V2
> Lumi Scan
> P1
> 7.546	5694-5753	35
> V2
> Production
> P2
> 7.546
> 5758-5870
> 45
> V4
> Production
> L3
> 7.546
> 5768-5769
> 5
> V4
> Low Luminosity
> E1
> 7.546
> 5749
> 150
> V2
> Empty Target
> 
> 
> 
> 
> 
> 
> L4
> 6.535
> 5875-5885	7,10,35,75	V6
> Trigger test&Lumi scan
> P3
> 6.535	5886-5972	60
> V6
> Production
> P4
> 6.535	5975-5985	35
> V6-300MeV/200MeV	½ Lumi Production
> L5
> 6.535	5986-5990	5
> V6-150MeV	Low Luminosity
> L6
> 6.535	5991-5994	10,35,60,75	V6-300MeV-random 30Hz	Lumi scan&random trg
> E2
> 6.535	5995
> 150
> V6-150MeV	Empty Target
> T
> 6.535	5996-6000
> 35
> V6-150MeV	½ Torus Field
> All the best
> 
> Annalisa
> 
> -- 
> ================================================
> Prof. Annalisa D'Angelo
> Dip. Fisica, Universita' di Roma "Tor Vergata"
> Istituto Nazionale di Fisica Nucleare
> Sezione di Roma Tor Vergata, Rome Italy
> email:annalisa.dangelo at roma2.infn.it <mailto:email:annalisa.dangelo at roma2.infn.it> 
> Jefferson Laboratory, Newport News, VA USA
> Email: annalisa at jlab.org <mailto:annalisa at jlab.org>
> Tel: + 39 06 72594562

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