[clas12_rgk] [EXTERNAL] Pass1 Data Processing Request for RG-K
Annalisa D'Angelo
annalisa.dangelo at roma2.infn.it
Tue Jul 14 11:35:15 EDT 2020
Dear Kyungseon,
the situation of COVID-19 in Italy has much improved with respect to
last March, people is restarting some sort of phase III (almost normal )
life. Most people seem to respect social distancing but an increasing
number of persons start to relax: the worry is for a second wave next fall.
Thank you for your update on the discussion within CCC about RG-K pass1
data processing.
Let me summarize my understanding of the present RG-K status and our
plan for data analysis.
- RG-K pass1 review was successfully completed after one iteration with
the pass1 readiness review committee for all the requested charges
- the pass1 readiness review committee asked the RG-K to clearly
identify which reactions could provide publishable data with the present
cooking
- RG-K has identified two possible reactions and observables:
* Beam-Recoil Lambda polarization from K+ Lambda electroproduction on
the proton
where the scattered electron, the kaon and the proton from the Lambda
decay are detected in the forward detector
* Beam Spin Asymmetry from DVCS on a proton target
where the scattered electron is detected in the forward detector, the
photon is detected in the forward detector or in the forward tagger, the
proton is detected in the forward detector for 10% of the events and is
tagged in the central detector for 90% of the statistics.
The answer to your question is that the central tracking is used only to
tag the protons, without using any momentum information, in one of the
two publishable reaction channels.
**
However the quality of the data analysis cannot be judged at this stage,
before RG-K is allowed to access the data themselves. Formal procedures
to review the data analysis exist within the CLAS collaboration, which
require that an analysis note is produced by the PI and is reviewed by
an appointed committee.
Systematic checks on proton detection efficiency stability could be
produced using proton pi0 electro-production and additional procedures
to perform kinematical checks would be included in the Analysis Note and
any decision on the final quality of the produced results should be
taken "a posteriori".
Finally we have been informed that cable swapping in some MicroMegas
channels has been found in RG-B data. No evidence yet exist of a similar
problem in fall RG-A and RG-K data, which ran before the engineering
intervention to install 2 MM layers in January 2019. Any disagreement
with the expected performance may be resolved involving montecarlo
simulations to evaluate the efficiency loss in discarding the
problematic regions.
RG-K is ready and eager to start with data processing.
Should the CCC be willing to organize a BJ meeting in a week timescale,
we would be more than happy to answer all additional questions you may
want to ask.
Best regards
Annalisa for the RG-K
Il 06/07/20 15:47, Joo, Kyungseon ha scritto:
> Dear Annalisa,
>
> I hope that this email finds you well and healthy. The situation in
> US is getting even more dire and the worst part is that it seems that
> people don't care much including the president.
>
> Regarding data processing request for RG-K, CCC met last week to
> discuss it and is concerned about your RG-K's plan for central
> tracking use. If central tracking will be used in your physics
> analysis even at the minimum level which is not clearly defined, we
> need to make sure that we understand your plan and the review for that
> part is in place. Please provide us some more details about it. If
> desirable, we could have a short BJ meeting. Thanks.
>
> Best regards, Kyungseon
>
>
> Kyungseon JOO
> Professor of Physics
> University of Connecticut
> Storrs, CT 06269
> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.phys.uconn.edu_-7Ekjoo&d=DwID-g&c=CJqEzB1piLOyyvZjb8YUQw&r=t2OnxVoP8YJyzuxpHKwj1tmrMj6s1mZ4pgV16sZJZb8&m=LRCrxNnuogXPaynWAdAXg9g_RdUjznhv5gKQPTWNJ70&s=4i00H7smfp__2oD_NSCUxIuyKuZCrkJKCoRGiRPUobE&e=
> ------------------------------------------------------------------------
> *From:* Annalisa D'Angelo <annalisa.dangelo at roma2.infn.it>
> *Sent:* Saturday, July 4, 2020 2:57 AM
> *To:* Joo, Kyungseon <kyungseon.joo at uconn.edu>; kjoo at jlab.org
> <kjoo at jlab.org>
> *Subject:* Re: [EXTERNAL] Pass1 Data Processing Request for RG-K
> *Message sent from a system outside of UConn.*
>
> Dear Kyungseon,
> I was wondering if you had discussed RG-K pass1 scheduling within the CCC.
> Have a great 4th of July.
> Annalisa
>
>
> Il 25/06/20 17:31, Joo, Kyungseon ha scritto:
>> Dear Annalisa and Run Group K,
>>
>> Thanks for the request. CCC will discuss this soon and will get back
>> to you. Thanks.
>>
>> Best regards, Kyungseon
>>
>> Kyungseon JOO
>> Professor of Physics
>> University of Connecticut
>> Storrs, CT 06269
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.phys.uconn.edu_-7Ekjoo&d=DwID-g&c=CJqEzB1piLOyyvZjb8YUQw&r=t2OnxVoP8YJyzuxpHKwj1tmrMj6s1mZ4pgV16sZJZb8&m=LRCrxNnuogXPaynWAdAXg9g_RdUjznhv5gKQPTWNJ70&s=4i00H7smfp__2oD_NSCUxIuyKuZCrkJKCoRGiRPUobE&e=
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__nam10.safelinks.protection.outlook.com_-3Furl-3Dhttp-3A-252F-252Fwww.phys.uconn.edu-252F-7Ekjoo-26data-3D02-257C01-257Ckyungseon.joo-2540uconn.edu-257C34f5c8e0f8e84f778fc208d81fe77cd9-257C17f1a87e2a254eaab9df9d439034b080-257C0-257C0-257C637294426543856759-26sdata-3DYOgUZxrMo7XXh0jAMEHVoRKn2uL-252FG2-252BUs9juEVlOkeA-253D-26reserved-3D0&d=DwID-g&c=CJqEzB1piLOyyvZjb8YUQw&r=t2OnxVoP8YJyzuxpHKwj1tmrMj6s1mZ4pgV16sZJZb8&m=LRCrxNnuogXPaynWAdAXg9g_RdUjznhv5gKQPTWNJ70&s=_NB_sdNmoGTEEM6HtN69MDPyDQyBT8nOoITb7e3MQ9k&e= >
>> ------------------------------------------------------------------------
>> *From:* Annalisa D'Angelo <annalisa.dangelo at roma2.infn.it>
>> <mailto:annalisa.dangelo at roma2.infn.it>
>> *Sent:* Wednesday, June 24, 2020 4:00 PM
>> *To:* kjoo at jlab.org <mailto:kjoo at jlab.org> <kjoo at jlab.org>
>> <mailto:kjoo at jlab.org>; Raffaella De Vita
>> <Raffaella.Devita at ge.infn.it> <mailto:Raffaella.Devita at ge.infn.it>;
>> mcontalb at fe.infn.it <mailto:mcontalb at fe.infn.it>
>> <mcontalb at fe.infn.it> <mailto:mcontalb at fe.infn.it>; Battaglieri Marco
>> <Marco.Battaglieri at ge.infn.it> <mailto:Marco.Battaglieri at ge.infn.it>;
>> bryan.mckinnon at glasgow.ac.uk <mailto:bryan.mckinnon at glasgow.ac.uk>
>> <bryan.mckinnon at glasgow.ac.uk> <mailto:bryan.mckinnon at glasgow.ac.uk>;
>> elfassi at jlab.org <mailto:elfassi at jlab.org> <elfassi at jlab.org>
>> <mailto:elfassi at jlab.org>
>> *Cc:* latifa at jlab.org <mailto:latifa at jlab.org> <latifa at jlab.org>
>> <mailto:latifa at jlab.org>; burkert at jlab.org <mailto:burkert at jlab.org>
>> <burkert at jlab.org> <mailto:burkert at jlab.org>; Francois-Xavier
>> Girod-Gard <fxgirod at jlab.org> <mailto:fxgirod at jlab.org>; Viktor
>> Mokeev <mokeev at jlab.org> <mailto:mokeev at jlab.org>;
>> maxime.defurne at cea.fr <mailto:maxime.defurne at cea.fr>
>> <maxime.defurne at cea.fr> <mailto:maxime.defurne at cea.fr>; Ralf Gothe
>> <rwgothe at gmail.com> <mailto:rwgothe at gmail.com>; Dan Carman
>> <carman at jlab.org> <mailto:carman at jlab.org>; clas12_rgk at jlab.org
>> <mailto:clas12_rgk at jlab.org> <clas12_rgk at jlab.org>
>> <mailto:clas12_rgk at jlab.org>
>> *Subject:* [EXTERNAL] Pass1 Data Processing Request for RG-K
>> *Message sent from a system outside of UConn.*
>>
>>
>> Dear CLAS Collaborator Chair,
>>
>> Dear Members of the CLAS Coordinating Committee,
>>
>> please find in attachment the formal request letter for pass1 data
>> processing of the RG-K data set in parallel with RG-B.
>>
>> We are available for any additional information you may need.
>>
>> Best regards
>>
>> Annalisa D'Angelo
>>
>> for the Run Group K
>>
>>
>> --
>>
>> ================================================
>> 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
>>
> --
> ================================================
> 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
--
================================================
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
Jefferson Laboratory, Newport News, VA USA
Email: annalisa at jlab.org
Tel: + 39 06 72594562
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