The upgraded summing NaI(Tl) (SuN++) absorption spectrometer
Simulations of astrophysical processes require a plethora of nuclear physics input. In particular, models of neutron-capture nucleosynthesis like the s, i, and r processes require β-decay information and experimentally constrained neutron-capture reaction rates. Past experiments with the 4π Summing NaI(Tl) (SuN) total absorption spectrometer have provided these physics quantities. Here, we outline an upgrade of SuN to SuN++, where 20 new segments (12 NaI(Tl) and 8 CeBr3) have been integrated into the pre-existing SuN total absorption spectrometer to provide increased energy and time resolution in β-decay experiments. The details of the newly upgraded SuN++ total absorption spectrometer are discussed with results from the commissioning experiment at the Facility for Rare Isotope Beams (FRIB) utilizing a 70Cu beam.
Authors
- A. Tsantiri (ORCID: https://orcid.org/0000-0002-9759-3476)
- G. Owens-Fryar (ORCID: https://orcid.org/0000-0001-6728-6494)
- Matthew R. Mumpower (ORCID: https://orcid.org/0000-0002-9950-9688)
- T. H. Ogunbeku (ORCID: https://orcid.org/0000-0002-4442-7757)
- Scott E. Campbell
- R. Jain (ORCID: https://orcid.org/0000-0001-9859-1512)
- N. D. Gamage
- Xiangcheng Chen (ORCID: https://orcid.org/0000-0003-3513-8870)
- D. P. Scriven (ORCID: https://orcid.org/0000-0002-3853-2200)
- A. A. Doetsch (ORCID: https://orcid.org/0000-0001-7223-789X)
- H. Arora (ORCID: https://orcid.org/0000-0001-6183-658X)
- B. Greaves (ORCID: https://orcid.org/0000-0003-4446-220X)
- M.K. Smith (ORCID: https://orcid.org/0009-0009-3030-8341)
- M. Wiedeking (ORCID: https://orcid.org/0000-0003-4983-3882)
- R.J. Coleman
- A. C. Hartley
- Howard C. Berg (ORCID: https://orcid.org/0000-0002-6958-9605)
- E. Good (ORCID: https://orcid.org/0000-0001-7765-6188)
- A. Richard (ORCID: https://orcid.org/0000-0001-8308-688X)
- R. Ringle (ORCID: https://orcid.org/0000-0002-7478-259X)
- Johan Emil Linnestad Larsson (ORCID: https://orcid.org/0009-0005-7260-3489)
- M. J. Mogannam (ORCID: https://orcid.org/0000-0001-8951-4953)
- Chris M. Ireland
- C. Sumithrarachchi (ORCID: https://orcid.org/0009-0009-3123-0937)
- D. L. Bleuel (ORCID: https://orcid.org/0000-0003-2792-0715)
- T. Gaballah (ORCID: https://orcid.org/0009-0003-2846-5117)
- R. S. Lubna (ORCID: https://orcid.org/0000-0003-4976-3976)
- A. Spyrou (ORCID: https://orcid.org/0000-0002-8642-8352)
- S. N. Liddick (ORCID: https://orcid.org/0000-0003-1589-891X)
- B. P. Crider (ORCID: https://orcid.org/0000-0001-7153-8762)
- F.M. Maier (ORCID: https://orcid.org/0000-0001-9715-2147)
- E. K. Ronning (ORCID: https://orcid.org/0009-0006-4672-5834)
- S. Uthayakumaar (ORCID: https://orcid.org/0000-0002-3154-0734)
- C. Izzo
- P. A. DeYoung (ORCID: https://orcid.org/0000-0001-9899-0716)
- A. Sweet (ORCID: https://orcid.org/0000-0001-7750-5232)
- J. M. Berkman (ORCID: https://orcid.org/0009-0001-9753-0096)
- H. Erington
- John C. Huffman
- Kyle Taft
- K. Bosmpotinis
Publication Details
- Journal
- Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
- Published
- 2025-08-15
- DOI
- https://doi.org/10.1016/j.nima.2025.170930
- Citations
- 1
- Primary Topic
- Nuclear physics research studies
- Type
- article
- Field-Weighted Citation Impact
- 1.87
Funders
- National Science Foundation
- U.S. Department of Energy
- Murray State University
- Canada Foundation for Innovation
- Office of Science
- National Nuclear Security Administration
- Natural Sciences and Engineering Research Council of Canada
- Office of Defense Nuclear Nonproliferation
- Nuclear Physics
- Laboratory Directed Research and Development
- Lawrence Livermore National Laboratory