[clas12_rgk] [EXTERNAL] Run group addition proposal

[Volker Burkert]

Dear Harut,

Although I would support that proposal as a new CLAS12 experiment, the fact that you are still discussing prominently the "The need for inbending.." is a distraction and will only confuse the collaboration and the PAC, should it be submitted as a RGK run group proposal extension.  I am therefore unable to join the proposal.

Just one comment on the energies. RGK has requested 8.8 GeV and 6.6 GeV. However, the machine is currently not capable of achieving those energies in the 4 pass and in 3 pass operation. That's why we have to settle on the somewhat lower energies.

Regards,
Volker

>From the PAC call for proposals.
"Additions to Previously Approved Run Groups
New experimental proposals that do not require additional experimental equipment and that run (even partially) in parallel with previously approved run groups should be considered internally by the proposing collaboration. Run group additions that require changes or additional equipment need to be submitted as full stand-alone proposals."




________________________________
From: harut avagyan <avagyan.harut at gmail.com>
Sent: Friday, May 12, 2023 5:30 PM
To: Daniel Carman <carman at jlab.org>; Annalisa D'Angelo <annalisa.dangelo at roma2.infn.it>; Volker Burkert <burkert at jlab.org>
Subject: [EXTERNAL] Run group addition proposal

Dear All,
While we are still working on the part with RGK data the draft has some details on MC  and the motivation. The latest version is in https://userweb.jlab.org/~avakian/tmp/Run_Group_K_Proposal__LT_separation_of_the_SIDIS_pi__cross_section.pdf
We make the case for 8.4 (better 8.8) being critical for Q^2>4 GeV to qualify for run group addition.
We will need relative cross section measurements with systematics below 5%.
We do have some estimates of expected cross sections. For better understanding of opportunities with exclusive parts it will be useful to have some evaluation of expected x-sections for some bins vs beam energy.

Please let me know if you will be interested to be part of the proposal.
Best regards,
Harut

P.S. We may push for online reconstruction in future to be used in online monitoring of tracking efficiencies in the full kinematics in polar and azimuthal angles of electrons.
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