Nuclear Astrophysics Working Group Summary• Conveners: Melina Avila (ANL), Catherine Deibel (LSU), Hendrik Schatz (MSU),

Michael Smith (ORNL)• Well-attended session: 140-150 participants• Exciting time in nuclear astrophysics astrophysics:

ØFRIB/JINA: May Workshop Summary: Ø Short talks on astrophysical areas of interest followed by break-out groups facilitate collaboration between

astrophysicists, observers and experimentalists – this is criticalØ New prospects on the horizon: on r-process, i-process, n-process, Supernovae, X-ray bursts, pre-solar grains,

gamma-ray observations, neutrino signals, neutron stars, compact object inspirals, novae, neutron star mergers, kilonovae, age of the cosmos, etc.

Ø Strong interest in (nuclear) astrophysics community for FRIB dataØ Many opportunities and equipment available Day 1 @ FRIB

ØNew equipment, upgrades at TUNL/LENA, Notre Dame, CASPAR, ATLAS, FSU, OhioØ Exciting new results from broad range of facilities (next slide)

• Other ConclusionsØGetting experimentalists, theorists, modelers, and observers to work together is IMPORTANT!ØCommunity recognizes the importance of JINA for the field and supports some form of

continuationØWorking group website “Laboratories in Nuclear Astrophysics” to be created:

o updates on laboratories, equipment, collaborationso resource for early career researchers à job postings, collaborations, etc.o facilitate future working group meetings

Tan et al., PRL (2020)

Astrophysical S-factor7Be+d → p+2α

Rijal et al. PRL (2019)

Florida State University (S. Almaraz-Calderon)Ø Tandem+LINAC; multiple experimental

devices (e.g. Spectrograph, ANASEN, ENCORE, CATRiNA)

Ø Science highlights: direct studies 7Be+d(7Li problem), 18Ne(a,p)21Na, 17F+12C; indirect studies of 26Al production/destruction and 25Si production

M. Avila et al. (in preparation)ANL (M. Avila)

Ø Variety of beams (stable, RIB, (nu)CARIBU) and equipment available

Ø Science highlights: (a,p),(a,n) w/MUSIC, r-process mass measurements w/ CPT, GRETINA+FMA constraints on 33Cl(p,g)34Ar

Ohio University (C. Brune)

Ø 4.5-MV tandem, neutron source (“FAST” n beam coming soon), neutron TOF

Ø Science highlights: direct measurement 13C(a,n)16O; indirect measurements 59Cu(p,g)60Zn, 12C(n,n’) à Hoyle state, 39Ar(p,g)40K

TUNL/LENA (R. Longland)Ø Laboratory for low energy nuclear

physics, Higs photon sourceØ Science highlights: Bayesian analysis of

BBN reactions, direct measurement 30Si(p,g)31P, 33S(a,p)35Cl

Notre Dame (D. Bardayan)

Ø Multiple accelerators, new equipment (St. George commissioned, Enge SPS installation, TwinSolàTriSol), future neutron beams

Ø Science highlights: direct measurements: 20Ne(a,g)24Mg, C+C fusion, 36Cl in early Solar System (AMS)

CASPAR (D. Roberston)

Ø Underground laboratory = high-intensity beams+low background (future expansion to DIANA)

Ø Science highlights: direct measurements of 14N(p,g)15O, 11B(a,n)14N, 27Al(p,g)28Si, 18O(a,g)22Ne, 7Li(a,g)11B

Dermigny et al., PRC (2020)