Speaker
Dr
Alison Laird
(University of York)
Description
A new detector for nuclear astrophysics studies is being designed
and built by TRIUMF and the University of York. TACTIC, the TRIUMF
Annular Chamber for Tracking and Identification of Charged
particles, is designed to detect low energy charged particles from
reaction studies performed at the relevant astrophysical energies,
in inverse kinematics. TACTIC is a cylindrical ionisation chamber
with segmented anode strips which allow the dE/dx of the particle to
be determined along with the total energy. Information from drift
times allows the particle trajectory to be reconstructed. This in
turn identifies the interaction point along the beam axis and hence
the centre of mass energy of the reaction. To amplify the expected
weak signals, a Gas Electron Multiplier (GEM) will be used in place
of the usual Frisch grid. Full electronic readout of the charge and
timing of each anode strip will be achieved with flash ADC cards
allowing pulse shape analysis of the signals. Results from a test
chamber and GEANT4 simulations will be presented.
Primary author
Dr
Alison Laird
(University of York)
