Speaker
Description
TIGRESS, an array of up to 16 Compton-suppressed high purity germanium clover detectors (based on the EXOGAM design, with additional segmentation), has enabled many in-beam experiments studying nuclear structure and astrophysics at TRIUMF over the last two decades. In recent years TIGRESS has been operated alongside the EMMA recoil spectrometer, enabling significant improvements in reaction channel selectivity which have been particularly useful for the study of astrophysical reaction rates and the identification of neutron-deficient channels following fusion-evaporation.
This talk will cover recent science highlights from the TIGRESS array and its suite of ancillary detectors. Particular focus will be given to a recent series of fusion-evaporation studies using EMMA and a spherical 128-element CsI(Tl) array for exit channel identification.
Additionally: as TRIUMF focuses its efforts on the completion of the ARIEL facility, the ISAC facility (where TIGRESS is located) will shut down for 16 months starting January 2026. However, this interruption in the beam schedule presents a unique opportunity as both TIGRESS and the nearby GRIFFIN array will now be available for long duration high-statistics source measurements. Several experiments have been proposed, focusing on the study of rare decay modes with extremely weak branching fractions. Our plans for the upcoming year will be discussed.