Research Groups

Below you will find links for the individual research devices here at NSCL that have their own website. Additionally, on the right side of the page you will find links to service level descriptions of the devices when applicable.

  • A1900 fragment separator – The A1900 fragment separator is used for the development and delivery of the rare isotope beams used for research at the NSCL. The people that provide support for the separator also provide operational support of NSCL devices such as the S800 spectrometer, the Sweeper magnet and the RF separator.
  • BECOLA – BECOLA is used to perform collinear-laser spectroscopy experiments using low energy and cooled/bunched beams to study the magnetism (magnetic moment) and the shape (quadrupole moment and charge radius) of rare isotopes. Highly polarized beam produced by optical pumping technique are utilized in experiments to test fundamental symmetries.
  • Charge-Exchange Group – The Charge-Exchange group focuses on nuclear structure studies of spin-isospin excitations in (rare) isotopes, which helps inform their applications to astrophysics. This is done using a variety of probes, such as the (t,3He), (7Li,7Be) and (p,n) reactions. Experiments are performed with several detector systems, including the S800 magnetic spectrograph, the Low Energy Neutron Detector Array (LENDA) and the Segmented Germanium Array (SeGA).
  • Gamma Group - SeGA and CAESAR are gamma ray detectors that help study the evolution of nuclear structure in exotic nuclei via (direct) nuclear reactions using the experimental technique of in-beam gamma-ray spectroscopy. Depending on detection efficiency and energy resolution needs, either the segmented germanium array (SeGA) or the high-efficiency scintillator array CAESAR are used in conjunction with NSCL's S800 spectrograph.
  • HiRA - HiRA's main experimental purpose is to help scientists understand the physics of nuclear reactions. Experimental programs include multifragment reactions using Sn and Ca isotopes to study the properties of nuclear matter, transfer reactions using Ar and Ni isotopes to study the nuclear structure and reaction mechanisms of direct reactions as well as the comprehensive measurements of fragment cross-sections from projectile fragmentation.
  • Lifetime Group - This group focuses on nuclear spectroscopy via level lifetime measurements using rare isotope beams, to investigate the evolution of nuclear structure and the collective phenomena of exotic nuclei. The TRIPLEX plunger is a device used in Recoil Doppler-shift Distance Method (RDDM), which provides a model-independent approach to determine excited-state lifetimes in the 1ps - 1ns range. Experiments are performed in combination with several pieces of equipment including the segmented germanium array (SeGA) and the S800 spectrometer.
  • MoNA-LISA - MoNA/LISA is used to investigate the nuclear structure of neutron unbound systems by studying their decay products. These systems are formed using rare isotope beams and decay in flight. Experiments employ the Sweeper Dipole Magnet and MoNA-LISA, a highly efficient, large-area neutron detector array.
  • SuN - The SuN device is used in the investigation of the p-process reactions, in particular (p,gamma) and (alpha,gamma) reactions for various target nuclei, by implementing two techniques: activation measurements and the summing technique. Especially, the summing technique used for ReA3 radioactive beams will allow for exploration of the regions of the chart of nuclei not available for stable beam or activation experiments. For this purpose, the new NaI segmented summing detector (SuN) has been developed.
    In parallel to the experimental work, astrophysical network calculations are performed that focus on production of the p-nuclei. In particular, the sensitivity of the abundances of the p-nuclei to the production rates can be tested.
  • S800 spectrometer – The S800 spectrograph is the workhorse of the laboratory's experimental programs. More than 50% of the allocated beam time is run on this device, due to its high performance and versatility. Combining large acceptances with high resolution, its main function is to select, identify and characterize reaction products emanating from the reaction target at forward angles. Although it is used in standalone for some experiments, it is most of the time combined with various detector arrays such as SeGA, Caesar, HiRA and soon Gretina, located around the target to further characterize the nuclear reactions. It is an essential part of the following experimental programs: knockout reactions, in-beam gamma-ray spectroscopy, charge-exchange reactions, gamma lifetime measurements, transfer reactions, new isotope search.
  • Low Energy Beam Ion Trap (LEBIT) - LEBIT uses a ion traps, and beams from the NSCL's gas stopping facility, to perform high-precision mass measurements on rare isotopes. By observing the motion of an ion in a Penning trap, one single ion at a time, one can determine its mass. The masses of both stable and rare isotopes are important in many fields of physics, such a nuclear astrophysics, nuclear structure, metrology, and fundamental interactions.