[Cuga] *Deadline approaching* 52nd Jefferson Lab Program Advisory Committee:- A message from Thia Keppel

[Lorelei Carlson]

The 52nd Jefferson Lab Program Advisory Committee meeting, PAC52. will be held during the week of July 8 - 12, 2024.  PAC52 will judge the technical and scientific aspects of submitted proposals and review jeopardy proposals to provide recommendations to laboratory management. New proposals will be recommended for approval only if they represent high quality physics in support of the scientific meeting of the lab. The deadline for submission of proposals and updates is 9:00 a.m. EDT (Eastern Daylight Time) on Wednesday, May 1st, 2024.

Proposals and updates for PAC52 should be submitted electronically using the instructions at http://www.jlab.org/exp_prog/PACpage/instructions.html



Completion of coversheets is a mandatory requirement. You will be prompted to complete each entry in the coversheet. All sections must be completed. In some cases, you may answer “N/A” (not applicable), and this data will be reflected in your final proposal submission. There will be no follow-up queries from the Laboratory. If N/A is not appropriate for the proposal, it could result in the proposal being rejected for insufficient information. Also note that proposals which require new experimental equipment must include additional information.



All proposals must include an Executive Summary or Abstract which is no longer than one page detailing the following:

  *   Main physics goals (please be specific)
  *   Proposed measurements / observables
  *   Specific requirements on detectors, targets and beam
  *   Resubmissions/Conditionals should clearly state what changed in the document compared with the previous one submitted to the PAC (please list previous PR and LOI numbers)

See http://www.jlab.org/exp_prog/PACpage/guidelines.html for more details.



New Proposals

Detailed information on the proposal submission process is available at http://www.jlab.org/exp_prog/PACpage/guidelines.html. New proposals will receive a 20-minute public presentation at the PAC meeting. Following this session, PAC discussions will continue in closed sessions. At least one spokesperson should be available in person or by phone for 24 hours after the public session to address questions during the PAC's discussions. Unconditionally approved proposals will receive a scientific rating and a beamtime allocation.



New run group proposals, seeking additional beam time, encompass a set of experiments sharing common beam time and experimental equipment. These proposals should be submitted together at one PAC meeting, where all associated physics aspects will be evaluated. Each run group can submit up to 4 individual proposals, consisting of up to 3 physics topics and 1 summary of additional topics. The PAC may assess each proposal individually but will aim to provide a unified evaluation for the entire run group.



Additions to Previously Approved Run Groups

New experimental proposals running partially or entirely in parallel with previously approved experiments should undergo internal review by the existing collaborations. Run group additions requiring changes or additional equipment must be submitted as standalone proposals. Minor exceptions requiring only slight modifications to experimental equipment should be discussed with the Associate Director for Experimental Nuclear Physics before PAC submission as run group additions. Documentation from the internal collaboration review should be submitted to the PAC for information. A representative of the approved collaboration or the relevant Hall Leader will report on these additional proposals to the PAC, which may formalize collaboration approval and provide comments in its report.



Conditionally Approved Proposals

The PAC may grant conditional approval to proposals, falling into two categories:

  *   C2 requires return to the PAC for addressing concerns,
  *   C1 requires meeting technical requirements for approval from laboratory management without further PAC review.

Newly C2 conditionally approved 12 GeV proposals must seek approval at one of the next two consecutive PAC meetings following the one where they received conditional approval status.

Proposals with previous conditional approval (C2) that wish to be considered for approval at PAC52 should submit an updated proposal and will be granted presentation time at the PAC meeting. Following the public presentation session the PAC will continue its discussions in closed session, and at least one spokesperson should be available either in person or by phone for 24 hours after the public session to answer questions as the PAC's discussion progresses. If approved, the proposals will be considered for rating along with the other approved proposals in the grading session.



Jeopardy

Experiments not reviewed by the PAC in over three years and not on the upcoming Jefferson Lab schedule can undergo Jeopardy review. This year's focus is on Hall B's run groups A, B, C, G, H, and I. Run groups I, C, B, and A, having received some beam time, should present results, while G and H should provide updates on new targets and scientific progress. The jeopardy submissions, due by May 1st, should include at least a one-page update. Jeopardy reviews cannot be used to request additional beam time beyond the original PAC allocation; for additional time, a new proposal should be submitted.



PAC Results

The PAC's decisions will be made public as follows: the list of scientific ratings and beam time allocations will be given to the Hall Leaders at the PAC closeout and posted on the PAC52 website. The final written PAC report will also be available on the PAC52 website and emailed to the user community.



Appendix: Scientific Categories for Nuclear Physics Proposals

  1.  Hadron spectra as probes of QCD
(GlueX and heavy baryon and meson spectroscopy)
  2.  Transverse structure of the hadrons
(Elastic and transition Form Factors)
  3.  Longitudinal structure of the hadrons
(Unpolarized and polarized parton distribution functions)
  4.  3D structure of the hadrons
(Generalized Parton Distributions and Transverse Momentum Distributions)
  5.  Hadrons and cold nuclear matter
(Medium modification of the nucleons, quark hadronization, N-N correlations, hypernuclear spectroscopy, few-body experiments)
  6.  Low-energy tests of the Standard Model and Fundamental Symmetries

(Searches for dark matter or physics beyond the standard modl, test of fundamental symmetries)







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