Speaker
Description
Low-Gain Avalanche Detectors (LGADs) have excellent timing performance due to their incorporation of a doped layer tuned to provide moderate gain of about a factor 20. Classic LGADs have no-gain regions; addressing this has stimulated various novel designs. Due to their fill factor limitations, the classic LGAD's spatial resolution is limited to ~ 1mm. The AC-coupled LGAD (AC-LGAD) addresses this issue by eliminating the no-gain region and coupling the signal to the pads capacitively. Several types of AC-LGADs designed by Brookhaven National Laboratory had been irradiated by gamma rays and 400 MeV protons. Characterization methods, including those for IV, CV, inter-pad isolation, charge collection efficiency, and Transient Current Technique (TCT), are being developed at the University of New Mexico. Initial results will be presented.
