[Clas12_first_exp] Beam Studies and RC Meeting Followup

[William Phelps]

For work in the Hall, beam is not possible during the injector studies so you will have ~6 hours to access the hall. From around 10am tomorrow the hall should be accessible. If we are unable to get beam to the hall during the first two hours then we may be able to have access the hall then as well. 

-Will

> On Mar 31, 2019, at 4:11 PM, William Phelps <wphelps at jlab.org> wrote:
> 
> Hello Everyone,
> 
> I clarified with the PD about tomorrow’s beam studies:
> -Beam to Hall D for 1-2 hours. —— This is where we could potentially get beam as well. Yves Roblin will be in early tomorrow to discuss bringing beam to Hall B.
> 	-More will be known at the 7:45 meeting
> -For the 6 hours following the beam to Hall D they will perform some injector setup for an upcoming experiment 
> 	-They may also be able to recover some pumps for the north linac
> 	-Hopefully the beam will be exactly the same as before beam studies
> 
> And about the RF recovery on Tuesday:
> -They may need the full 8 hours for RF recovery
> 	-NL21 has some problems with 7/8 tuners frozen (either mechanically or electronically)
> 		-Last night’s issues may have involved the turbo pumps in NL21. Reset or replacement will be done during RF recovery.
> 	-Other cryomodules have issues in the north linac that will be investigated
> 
> Stepan, do you think that we can use the (potential) beam in the morning to study the occupancy asymmetry?
> 
> -Will
> 

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