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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/49777513:23220/25:43975549

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/GM23-04869M" target="_blank" >GM23-04869M: Identifikace částic v experimentech fysiky vysokych energií a ve vesmíru s pokročilými detekčními systémy</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

1748-0221

Svazek periodika

20

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

001443861200001

EID výsledku v databázi Scopus

2-s2.0-105000278454