Pulse shape simulation of p-type Point Contact Germanium Detector for The MAJORONA DEMONSTRATOR Experiment

TL;DR

This paper simulates the pulse shape of P-type point contact germanium detectors, comparing it to the Majorana Demonstrator, to enhance understanding for dark matter and neutrino detection.

Contribution

It provides a detailed simulation of P-PC germanium detector pulse shapes and compares them with experimental data from the Majorana Demonstrator.

Findings

Pulse shape simulation matches experimental data

Enhanced understanding of detector response for low-energy events

Supports improved background discrimination techniques

Abstract

In the rare physics events search, liquid and solid detector plays an important role. Its analysis is based on the detection of excess events over the expected background or on the detection of an annual event rate modulation. Germanium detectors sensitivities have been demonstrated as efficient means to probe Weakly Interacting Massive Particles (WIMPs). Germanium detectors having sensitivity less than 100 eV opens new platform for the investigation of neutrinos and dark matter physics. There are various working configuration available for germanium detectors such as semi-coaxial, true coaxial and point contact. The point contact germanium detectors have been widely used for dark matter and low energy neutrino searches because of their sub KeV energy threshold and low electronic noise. Pulse shape of P-type point contact (P-PC) germanium detector has been simulated in the present work and compared to the pulse shape of Majorana Demonstrator(MJD).