Properties of the CsI(Tl) detector elements of the CALIFA detector
Artikel i vetenskaplig tidskrift, 2019

In the R3B experiment at FAIR, charged particles with energies up to 600 MeV and forward boosted γ-rays with energies up to 20 MeV need to be detected in scattering experiments. Calorimeters for nuclear physics experiments of this kind, using relativistic radioactive ion beams, require high energy resolution and high efficiency for simultaneous detection of strongly Doppler shifted γ-rays and high-energy charged particles. A calorimeter design that can meet these requirements, using CsI(Tl) scintillators, results in detector elements that may exhibit light output variations with crystal depth, which can limit the attainable resolution. In this paper we present results from a systematic study of 478 detector modules of CALIFA, the R3B calorimeter, in order to determine and minimize such variations. To facilitate further systematic studies we also present results for the total absorption length of the scintillation light, using spectrophotometry, light crosstalk between adjacent detector modules, and surface topography of the CsI(Tl) crystals from atomic force microscopy.

APD

Cross talk

Absorption length

Surface topography

Nuclear reactions

Calorimeters

CsI(Tl) energy resolution

Scintillators

Författare

A. Knyazev

Lunds universitet

J. Park

Lunds universitet

P.I. Golubev

Lunds universitet

J. Cederkall

Lunds universitet

H. Alvarez-Pol

Universidade de Santiagode Compostela

P. Cabanelas

Universidade de Santiagode Compostela

E. Casarejos

Universidad de Vigo

L. Causeret

Lunds universitet

D. Cortina-Gil

Universidade de Santiagode Compostela

Paloma Diaz Fernandez

Chalmers, Fysik, Subatomär fysik och plasmafysik

M. Feijoo

Universidade de Santiagode Compostela

D. Galaviz

LIP - Lisboa

E. Galiana

LIP - Lisboa

R. Gernhäuser

Technische Universität München

A. L. Hartig

Technische Universität Darmstadt

Andreas Martin Heinz

Chalmers, Fysik, Subatomär fysik och plasmafysik

B. Heiss

Technische Universität München

A. Ignatov

Technische Universität Darmstadt

Håkan T Johansson

Chalmers, Fysik, Subatomär fysik och plasmafysik

P. Klenze

Technische Universität München

T. Kröll

Technische Universität Darmstadt

Thomas Nilsson

Chalmers, Fysik, Subatomär fysik och plasmafysik

A. Perea

CSIC - Instituto de Estructura de la Materia (IEM)

H. B. Rhee

Technische Universität Darmstadt

O. Tengblad

CSIC - Instituto de Estructura de la Materia (IEM)

P. Teubig

LIP - Lisboa

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

0168-9002 (ISSN)

Vol. 940 393-404

Ämneskategorier

Acceleratorfysik och instrumentering

Subatomär fysik

Atom- och molekylfysik och optik

DOI

10.1016/j.nima.2019.06.045

Mer information

Senast uppdaterat

2019-11-07