Luminescence detectors at a laser-based electron accelerator

IF 1.6 3区物理与天体物理 Q2 NUCLEAR SCIENCE & TECHNOLOGY

Radiation Measurements Pub Date : 2025-02-01 DOI:10.1016/j.radmeas.2024.107367

A. Cimmino , I. Ambrožová , Ž. Knežević , M. Majer , D. Horváth , C.M. Lazzarini , G.M. Grittani , R. Truneček , V. Olšovcová

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引用次数: 0

Abstract

This work presents the first measurement of the radiation field at the Allegra Laser for Acceleration (ALFA) at the ELI Beamlines laser-driven user facility. During the commissioning of ALFA laser pulses (<20 fs, 1 kHz, 1.5 TW) were carefully focused inside supersonic gas targets to generate an ultra-short (fs) ultra-relativistic (10 s of MeV) electron beam. The radiation field produced was pulsed, mixed, and with high instantaneous fluxes and high dose rates. While new dosimetric techniques are being developed, important efforts are being made to investigate the behavior of known dosimetry systems at laser accelerators. The secondary radiation field at ALFA was here characterized using a combination of different solid-state dosimetric systems: optically stimulated luminescence, thermoluminesce, and radiophotoluminescence dosimeters. Luminescence dosimeters offer several advantages for these applications. They are robust and relatively inexpensive. They can be easily adapted to be placed in vacuum and comply with clean room environment: important aspects when laser optics are involved. Compared to active systems, there are no electronics that require shielding from electromagnetic pulses present at laser-driven accelerators. This contribution presents the obtained experimental data focusing on the different detector responses and their suitability for measurements at laser-driven accelerators.

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激光电子加速器上的发光探测器

这项工作提出了在ELI光束线激光驱动用户设施的Allegra加速激光（ALFA）上的辐射场的第一次测量。在ALFA调试期间，将激光脉冲（< 20fs, 1khz, 1.5 TW）仔细聚焦在超音速气体靶内，产生超短（fs）超相对论性（10s MeV）电子束。所产生的辐射场是脉冲、混合的，具有高瞬时通量和高剂量率。在开发新的剂量测定技术的同时，人们也在努力研究已知剂量测定系统在激光加速器上的行为。ALFA的二次辐射场在这里使用不同的固体剂量测量系统的组合进行了表征：光激发发光，热释光和辐射光致发光剂量计。发光剂量计为这些应用提供了几个优点。它们既坚固又相对便宜。它们可以很容易地适应在真空中放置，并符合洁净室环境：这是涉及激光光学的重要方面。与有源系统相比，激光驱动加速器不需要屏蔽电磁脉冲。本文介绍了所获得的实验数据，重点是不同的探测器响应及其在激光驱动加速器上的测量适用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Radiation Measurements 工程技术-核科学技术

CiteScore

4.10

自引率

20.00%

发文量

116

审稿时长

48 days

期刊介绍： The journal seeks to publish papers that present advances in the following areas: spontaneous and stimulated luminescence (including scintillating materials, thermoluminescence, and optically stimulated luminescence); electron spin resonance of natural and synthetic materials; the physics, design and performance of radiation measurements (including computational modelling such as electronic transport simulations); the novel basic aspects of radiation measurement in medical physics. Studies of energy-transfer phenomena, track physics and microdosimetry are also of interest to the journal. Applications relevant to the journal, particularly where they present novel detection techniques, novel analytical approaches or novel materials, include: personal dosimetry (including dosimetric quantities, active/electronic and passive monitoring techniques for photon, neutron and charged-particle exposures); environmental dosimetry (including methodological advances and predictive models related to radon, but generally excluding local survey results of radon where the main aim is to establish the radiation risk to populations); cosmic and high-energy radiation measurements (including dosimetry, space radiation effects, and single event upsets); dosimetry-based archaeological and Quaternary dating; dosimetry-based approaches to thermochronometry; accident and retrospective dosimetry (including activation detectors), and dosimetry and measurements related to medical applications.