Abstract
Abstract
The MUX64 ASIC is a 64-to-1 analog multiplexer to accommodate 64 inputs, with one
addressed to output for ADC readout. It is developed for monitoring of the Low-Gain Avalanche
Detectors (LGAD) detector modules in the High Granularity Timing Detector (HGTD) of the ATLAS
Phase-II upgrade. The MUX64 chips will be used in the radiation field of high-luminosity pp
collisions at LHC to an integrated luminosity of 4000 fb-1. This work presents
the radiation tolerance study for the MUX64 being tested with 80 MeV protons and X-ray exposures
for damages caused by Non-Ionizing Energy Loss (NIEL) and Total Ionizing Dose (TID), respectively.
The irradiated samples demonstrated tolerance to the NIEL to a fluence of 3.21 × 1015
(Si, 1 MeV) neq/cm2, and the TID of 7.46 × 105 Gy (Si).