October 25, 2016 - PWG topical leaders meeting

We will meet on Tuesday October 25 at 11am EST locally in TL-2236 and remotely using the BlueJeans teleconferencing system. If you haven't used BlueJeans before you can simply call in by phone (phone # and meeting ID below) or your computer (URL below). I will initiate the meeting just about 11am, so we'll give everyone ~5 minutes to join. If choosing to connect by computer for the first time I suggest downloading and loading the BlueJeans app. This information and any you would like to share is located on the meeting's wiki page: https://wiki.jlab.org/pwgwiki/index.php/October_25,_2016_-_PWG_topical_leaders_meeting. If you have any questions or difficulties please feel free to contact me (grames@jlab.org or 757-344-0188).

For those calling in we'll use the Blue Jeans [1] audio conference system.

Phone number: 1-888-240-2560
Meeting ID: 305857201#
Moderator Passcode: 2864#
Meeting URL: http://bluejeans.com/305857201

Agenda

Welcome to topical leaders

Discussion of charge and time line

Positron Beam R&D

• One slide scheme for JLEIC/CEBAF Polarized Positron Injector media:161025_JLEICCEBAF_INJECTOR.pptx
• J. Grames, "Production of Highly Polarized Positrons Using MeV Energy Polarized Electrons" SPIN 2016 media:SPIN_Grames_Final.pptx

Minutes

The goal of each sub-group is to single-out a set of golden experiments that would support and motivate the case for a positron beam both at JLab and EIC. This includes experimental data projections for reasonable beam parameters: $I\leq 5\mu$A and $P\approx 60$% for fixed target experiments in CW mode, ${\mathcal {L}}=10^{33}cm^{-2}\cdot s^{-1}$ and $P\approx 40$% for collider experiments, and $I=10^{10}e^{+}\cdot s^{-1}$ with $P\approx 50$% for positron applications. When possible, effort should be put on the identification of specificity of positrons and of polarization for the accomplishment of a physics program. These golden cases will be discussed and presented in priority at the JPos17 Workshop that will most likely happen end of june or september 2017.

Each sub-group should organize as judged most appropriate by their conveners. Scientific activities can take any form (working sessions, larger meeting...) but should be publicized in advance at the pwg@jlab.org mailing list.

The next meeting will be scheduled mid-december. It is expected that each subgroup will be organized by then with a core of contributing persons and a tentative timeline up to JPos17.