PT Journal
AU Herrero, V
   Toledo, J
   Catala, JM
   Esteve, R
   Gil, A
   Lorca, D
   Monzo, JM
   Sanchis, F
   Verdugo, A
TI Readout electronics for the SiPM tracking plane in the NEXT-1 prototype
SO Nuclear Instruments & Methods in Physics Research A
JI Nucl. Instrum. Methods Phys. Res. A
PY 2012
BP 229
EP 232
VL 695
DI 10.1016/j.nima.2011.12.057
LA English
DE Neutrino less double beta decay; Xenon gas TPC; SiPM readout; Front-end electronics; Gated integrator
AB NEXT is a new experiment to search for neutrinoless double beta decay using a 100 kg radio-pure high-pressure gaseous xenon TPC with electroluminescence readout. A large-scale prototype with a SiPM tracking plane has been built. The primary electron paths can be reconstructed from time-resolved measurements of the light that arrives to the SiPM plane. Our approach is to measure how many photons have reached each SiPM sensor each microsecond with a gated integrator. We have designed and tested a 16-channel front-end board that includes the analog paths and a digital section. Each analog path consists of three different stages: a transimpedance amplifier, a gated integrator and an offset and gain control stage. Measurements show good linearity and the ability to detect single photoelectrons.
ER