Physics of CLARION2-TRINITY at Florida State University*

CLARION2-TRINITY is a new Compton-suppressed HPGe and charged-particle array that is currently deployed at the John D. Fox Laboratory of Florida State University, which hosts a 9-MV FN Tandem and superconducting LINAC. The TRINITY charged-particle array contains 64 Cerium-doped Gadolinium Aluminum Gallium Garnet (GAGG:Ce) crystals configured into five rings spanning 7–54 degrees, and two annular silicon detectors that can shadow or extend the angular coverage to backward angles. The CLARION2 array supports 16 Compton-suppressed HPGe Clover detectors (≈ 4% efficiency at 1 MeV) configured into four rings (eight HPGe crystal rings) using a non-Archimedean geometry that suppresses coincident 511-keV gamma rays. The device also consists of a downstream zero-degree detector for beam-composition and stopping-power measurements. The entire array is instrumented with waveform digitizers and optimized for trigger-less operation. While the array was designed for absolute cross-section measurements with inverse kinematic reactions, e.g., single-step Coulomb excitation and sub-barrier transfer, it also has demonstrated utility in fusion-evaporation and beta-decay measurements.

An overview of the CLARION2-TRINITY device, FSU accelerator facility, scientific program, and first campaign of experiments will be given.