ISAC Physics Working Group. Convenors Malcolm Butler and Barry Davids. Subgroups. RIB Production and Ionization (Dan Stracener) Nuclear Structure (John Wood) Nuclear Astrophysics (Chris Ruiz) Fundamental Symmetries (John Behr). Physics Goals (1). Key unanswered questions:
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Key unanswered questions:
A well-developed program to better understand heavy-element nucleosynthesis (“the r-process”) and other key nucleosynthesis pathways
Half-lives (8p, TIGRESS-EMMA)
Reactions and Structure (DRAGON, TUDA, TACTIC, TIGRESS, EMMA, SHARC)
Use of atomic and nuclear systems for tests and probes of fundamental symmetries, their possible violation, and the search for new physics beyond the SM
Atom Traps and beta-decay spectroscopy (TRINAT and beyond)
b-g coincidence spectroscopy (TIGRESS)
Actinide targets yield both extremely neutron rich nuclei and heavy nuclei needed for fundamental symmetry studies that can’t be produced otherwise
Photofission would extend the reach to more neutron-rich isotopes of some key elements, particularly in regions around r-process waiting points, and produces fewer problematic isobars than proton-induced fission
Photofission would allow for continued studies during cyclotron shutdowns
Full facility with target stations and personnel would permit delivery of more RIB hours/year than any other ISOL lab
Second proton beam line would allow:
TRIUMF must construct a second proton beamline with at least two target stations and implement an actinide target in order to maintain its world leadership in RIB science through 2020.
An e- photofission driver would use nearly identical actinide targets and extend ISAC’s physics reach into more neutron rich isotopes relevant to r-process nucleosynthesis