IBIC microscopy – The powerful tool for testing micron – Sized sensitive volumes in segmented radiation detectors used in synchrotron microbeam radiation and hadron therapies

Authors

Zeljko Pastuovic, Australian Nuclear Science And Technology Organisation
Jeremy A. Davis, University of WollongongFollow
Linh T. Tran, University of WollongongFollow
Jason Paino, University of WollongongFollow
Andrew Dipuglia, University of WollongongFollow
Benjamin James, University of WollongongFollow
Marco Povoli, SINTEF
Angela Kok, SINTEFFollow
Vladimir Perevertaylo, SPA BIT
Rainer Siegele, Australian Nuclear Science And Technology Organisation
Dale A. Prokopovich, Australian Nuclear Science and Technology OrganizationFollow
Michael L. F Lerch, University of WollongongFollow
Marco Petasecca, University of WollongongFollow
Anatoly B. Rosenfeld, University of WollongongFollow
David D. Cohen, Australian Nuclear Science and Technology Organization

RIS ID

138278

Publication Details

Pastuovic, Z., Davis, J., Tran, T. Linh., Paino, J. R., Dipuglia, A., James, B., Povoli, M., Kok, A., Perevertaylo, V. L., Siegele, R., Prokopovich, D., Lerch, M., Petasecca, M., Rosenfeld, A. & Cohen, D. D. (2019). IBIC microscopy – The powerful tool for testing micron – Sized sensitive volumes in segmented radiation detectors used in synchrotron microbeam radiation and hadron therapies. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 458 90-96.

Abstract

Ion Beam Induced Charge (IBIC) microscopy performed using highly tuned microbeams of accelerated ions with energies in the MeV range is the powerful tool for analysis of charge carrier transport properties in semiconductor devices based on semiconductor hetero-junction, metal-on-semiconductor and semiconductor-on-insulator configurations. Here we present two cases of recent applications of the IBIC microscopy in the field of medical radiation physics. The reduced-rate ion microbeams with energies in the MeV range and sub-micrometer spot-sizes have been used for the investigations of the charge collection efficiency (CCE) in sensitive volumes of segmented radiation detectors in order to measure the spatial distribution and uniformity of CCE in different polarization conditions. This information allows the determination of the charge carrier transport properties in selected substructures of a particular device and to quantify its ability to accurately determine the energy deposited by incident ionizing radiation - two fundamental requirements of any microdosimeter or detector of ionizing radiation.

Grant Number

ARC/DP 170102273