[clas12_rgk] Fwd: impact of schedule change on RG-K

[Francois-Xavier Girod]

Dear Latifa

We had a discussion at last week's RG-K meeting, but it was only few
participants, so I think this is why Annalisa is continuing a discussion
here.

During the meeting we discussed that getting PAC days peace-meal for a
short experiment is detrimental and will affect systematical uncertainties.
One simple argument however was that having data is better not having data
at all. We agreed with the proposal of getting one week for RG-K and three
weeks for RG-A. We did not decide on the number of passes we would request.

Personally I hope that RG-K will be fully scheduled in the future for the
remainder of the PAC approved days, even if it means we have to wait a bit
longer. Increased systematical uncertainties is contrary to the physics
goal of our experiment.

Best regards
FX

Best regards
FX


On Mon, Oct 15, 2018 at 1:27 PM Latifa Elouadrhiri <latifa at jlab.org> wrote:

> Dear Annalisa,
>
> Is this related to the email from Volker last week, we didn't hear from
> you on that email of request from RGK? Did you  make request of RGK on our
> behalf and how many  weeks did you request? where does one week come from?
>
> Could you please give us more information on the running conditions beam
> energies?
>
> Best regards,
>
> Latifa
>
>
>
> On 10/15/18 6:49 AM, Annalisa D'Angelo wrote:
>
> Dear All,
>
> the CCC is asking us about the impact on the physics of Run Group K if we
> add one week of data taking in spring 2019 to the three weeks (instead of
> four) now expected for 2018.
>
> They would like to know if we will have enough data to produce some
> publication from the 2018 data (eventually including the additional week in
> 2019).
>
> Please send me your comments and your opinion about the possibility of an
> early publication from your proposed experiment.
>
> I will collect the information and write the draft for a response.
>
> Best regards
>
> Annalisa
>
>
> -------- Messaggio Inoltrato --------
> Oggetto: impact of schedule change on RG-K
> Data: Sun, 14 Oct 2018 22:48:04 -0400
> Mittente: Raffaella De Vita <Raffaella.Devita at ge.infn.it>
> <Raffaella.Devita at ge.infn.it>
> A: Annalisa D'Angelo <annalisa.dangelo at roma2.infn.it>
> <annalisa.dangelo at roma2.infn.it>
> CC: burkert <burkert at jlab.org> <burkert at jlab.org>, Michael H Wood
> <wood5 at canisius.edu> <wood5 at canisius.edu>, Marco.Battaglieri
> <battaglieri at ge.infn.it> <battaglieri at ge.infn.it>, Marco Contalbrigo
> <mcontalb at fe.infn.it> <mcontalb at fe.infn.it>
>
> Dear Annalisa,
> on Friday we had a CCC meeting to discuss the change in the accelerator schedule for 2018 and 2019.
> The discussion was specifically focussed on the 4 week extension that are being considered for the Spring 2019.
> The rational we have been following is to use this additional time to compensate for the losses that
> the different Run Groups will have for the delayed start of the machine after the summer shutdown
> and the other changes that are being done to the schedule. Among these, the extension of the 10.6 GeV
> running to after Thanksgiving and the consequent shortening of the low energy running at the end of
> this year are directly affecting Run Group. In this regard, what is being considered is to assign to
> Run Group K a week in the Spring 2019 after RG-B. To take a sound decision on this,
> we would like to have your feedback on the possibility for RG-K to have a publication from the 2018 run
> with the reduced time and on what would be the gain if another week of beam would be allocated in the Spring.
> Best regards,
> 	Raffaella
>
>
>
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