Evaluation of Timepix2 in adaptive gain mode for stopped and penetrating position-sensitive ion spectroscopy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F25%3A00382450" target="_blank" >RIV/68407700:21670/25:00382450 - isvavai.cz</a>

Alternative codes found

RIV/49777513:23220/25:43975549

Result on the web

<a href="https://doi.org/10.1088/1748-0221/20/03/C03011" target="_blank" >https://doi.org/10.1088/1748-0221/20/03/C03011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/20/03/C03011" target="_blank" >10.1088/1748-0221/20/03/C03011</a>

Result language

angličtina

Original language name

Evaluation of Timepix2 in adaptive gain mode for stopped and penetrating position-sensitive ion spectroscopy

Original language description

We present the study of the response of a Timepix2 detector (256 <bold>x</bold> 256 pixels, pixel pitch 55 mu m) with a 500 mu m thick silicon sensor in laboratory measurements with alpha sources, charged particle beams of relativistic ion fragments at the Super-Proton-Synchrotron at CERN and in short-ranged heavy ion beams at the Heavy Ion Facility of UCLouvain in Belgium: Ne-22, Cr-53 and Rh-103 of 238, 505 and 957 MeV, respectively. The Timepix2 detector was used in adaptive gain mode, and calibrated using previously developed methodology using protons with energies in the range from 500 keV to 2 MeV and alpha-particles of 5.5 MeV from Am-241 source prior to the testing. In a laboratory experiment, the detector was irradiated with alpha-particle from a (PuAmCm)-Pu-239-Am-241-Cm-244 source. alpha-particles of higher energy (similar to 9 MeV) were obtained through a measurement of naturally occurring decays of radon and its daughters while the detector was left running in the laboratory for two weeks. In both cases, an energy resolution of 2% was achieved. In the stopped ion beam measurement, the proper ion energy determination was hindered by the per-pixel saturation of 3.2 MeV. Still, due to an increase of measured energy with increasing charge deposition, the different ion species were separable. In the last study, the dE/dX spectra were obtained in a mixed relativistic particle beam and used to evaluate the capability of determining the beam composition. The spectrum stripping technique using iterative Landau curve fitting was applied to the spectra allowing for ion charge determination up to Z = 13. The per-pixel saturation was mitigated by placing the detector at an angle of 70 degrees with respect to the sensor normal.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/GM23-04869M" target="_blank" >GM23-04869M: Particle identification in high-energy physics experiments and space with advanced detection systems</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

1748-0221

Volume of the periodical

20

Issue of the periodical within the volume

3

Country of publishing house

IT - ITALY

Number of pages

10

Pages from-to

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UT code for WoS article

001443861200001

EID of the result in the Scopus database

2-s2.0-105000278454