PPB - June 28, 2023

Agenda

Reports: Karl Smolenski - Xelera Research progress on the liquid jet target development; Joe Gubeli - LERF experience irradiating a gallium target; Sohaib Bhatti - Fluent & ANSYS modeling and simulations of solid targets

JLUO Meeting (CC Auditorium) - https://indico.jlab.org/event/714/: 2:25 PM JLab @ 22 GeV, Speaker: Cynthia Keppel (Jefferson Lab); 2:50 PM Positron Physics at JLab, Speaker: Dr Eric Voutier (CNRS/IN2P3/IJCLab - UPS); 3:15 PM Positron Source and Beam, Speaker: Yves Roblin (jefferson lab); 3:30 PM CEBAF 22GeV Upgrade, Speaker: Todd Satogata (Jefferson Lab)

Status of proposals: - HEP proposal for e-/e+ sources development, with SLAC and KEK => awarded year 1; - DOE early career proposal for low vacuum (high current sources) => pending; - UVA JSA proposal to evaluate spin rotator for higher MeV energies => pending; - LDRD award (2nd year) to study phase acceptance of CEBAF => awarded year 1, pending year 2; - LDRD proposal (1st year) to study thermal predictions and stresses => pending year 1; - DOE SBIR awarded to Xelera/JLab for liquid jet target Phase I study => awarded

2023 topics: - Delivering 60-120 MeV e- or e+ from LERF to CEBAF; - Quads with large bore and large range 60-600 MeV; - Reversing polarity of magnets w/ bulk PS; -Evaluating CEBAF unipolar magnets w/ reversal; -Strategic roadmap for diagnostics for tuning and transporting secondary e+/e- beams; -Evaluation of radiation shielding for >100 kW target; -Strategic roadmap for LERF cryomodules and energy reach of primary e- and secondary e+/e- beams; -media:JLab AAC Report March 8-10 2023 Final.pdf