[Kaon-LT] Pion-LT status update and extended call for shift workers

[Garth Huber]

Dear Collaborator:

Thank you to all of you who have been supporting our Pion-LT experiment "Study
of the L-T separated cross section at 11 GeV and measurement of the charged
pion form factor to high Q^2" (E12-19-006) over the last years in many
different ways.  We really appreciate it!

The final part of the Pion-LT experiment is underway and has been taking data
since June 12.  We have been making progress on the run plan, and encourage you
to visit our "Physics Status page" to look at some very nice preliminary plots
from our online physics analysis.
https://hallcweb.jlab.org/wiki/index.php/PionLT_2022_Physics_Status

Due to a slow start, and inconsistent beam delivery, we are roughly one month
behind schedule.  We are very happy to let you know that we have been given an
extension to complete the experiment.  You can find the extended shift schedule
- until September 9 - here:
https://misportal.jlab.org/mis/apps/physics/shiftSchedule/index.cfm?experimentRunId=HALLC-PIONLT-2022

Please note that the shift requirement (covering both the "low" and "high
epsilon" portions of E12-19-006) for co-authorship is 15.  Owl shifts count
1.5, so this requirement can be satisfied by 10 owl shifts if you prefer.  Note
that the shift requirement for past/current run coordinators and collaborators
has been reduced taking into account their contributions. You can find your
shift total at the above link. Please note the special links on this page for
shift accounting from one of the earlier PionLT run periods.

We are aware that some collaborators who have expressed a desire to contribute
to the experiment have not been able to travel.  We hope that you will be able
to take advantage of this opportunity to contribute. Please contact us with any
questions.

This is an important experiment that has motivated the 5.50 degree capability
of the SHMS, and has been identified by NSAC as one of the flagships of the
JLab 12-GeV program.  If the past experience of our Fpi-2 experiment is any
guide, this experiment will produce many high impact papers. The fall 2021-22
"low epsilon" run was very productive, and by the end of the extended data
taking on February 8, we had completed data taking for 47 physics settings, as
well as numerous calibrations.  L/T-separations of course require data at
multiple epsilon points, and thus the final "high epsilon" part of the
experiment is essential for extracting the physics.

Please sign up for shifts if you are able - we greatly appreciate your help!

Thanks and Regards,
Garth, Tanja and Dave

-- 
Dr. Garth Huber, Dept. of Physics, Univ. of Regina, Regina, SK S4S0A2, Canada.
tel: 1-306-585-4240. fax: 1-306-585-5659.