HPGe GEANT4 Simulation: 8th order polynomial fit including selected vacuum chamber.
LaBr3 GEANT4 Simulation: 8th order polynomial fit above 40 keV including SCEPTAR and Delrin vacuum chamber.
Si(Li) Simulation: Relative Efficiency curve shape based on formalism referenced in Radiation Detection & Measurement (G.F. Knoll, Wiley 2000). Note that the Si(Li) simulations are known to differ from experiment at the 30% level. An absolute normalization is applied to match the empircal online performance observed in 2018/2019 beamtimes of 2%.
SCEPTAR GEANT4 Simulation: triple Fermi function fit adjusted to asymptotically approach 0.8 at high Q per experiment. Low-Q position efficiencies fixed to 0.065% per simulated annihilation photopeak efficiency.
The following four configuration efficiencies are based on solid angle coverage of detectors:
DESCANT: 27% efficient between 1 and 5 MeV; efficiency lower outside this range, and no value is reported here.
HPGe Simulations: Originally developed by E. Rand^{1}, different configurations simulated by A. Ibrahim^{1} and M. Stuck^{1} with oversight from C. Svensson^{1}
LaBr3, SCEPTAR Simulations: E. Rand^{1}
Si(Li) Simulation: T. Ma^{2, 3}, D. Cross^{2}, R. Dunlop^{1}, W. Mills^{3}, Z. -M. Wang^{2, 3}, C. Andreoiu^{2}
Web App: Built by W. Mills^{3} (source), and maintained by A. Garnsworthy^{3}
^{1} University of Guelph, Guelph, ON, Canada, N1G 2W1
^{2} Simon Fraser University, Burnaby, BC, Canada, V5A 1S6