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DOE OSTI · 2999889

DARHT Axis 1 Bremsstrahlung Dose Measurements

Moir, David C. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000214505259)·Jaworski, Michael Andrew [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000266637042)·Abdallah, Kimberly Lynn [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]·Brooks, Robert Lee [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]·Gonzales, Andrew Geronimo [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]·Ortiz, Gabriel Thomas [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000331275851)·Ronquillo, Daniel [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]·Sanchez, Manolito [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]·Snider, Samuel Eugene II [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]
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Abstract

he Dual-Axis Radiographic Hydrodynamic Test (DARHT) facility provides flash radiography ca pabilities using two electron Linear Induction Accelerators (LIA’s). Axis-1 of DARHT produces, nominally, a 20-MeV, 1.5-kA, 80-ns-Full Width at Half Max (FWHM) electron beam. The elec tron beam is focused on to a tantalum target to produce a Bremsstrahlung x-ray dose for flash radiography of dynamic systems. This paper will describe and compare a variety of techniques for determining the x-ray dose for two different beam currents produced by a 55mm and 70mm diameter cathode. The data was taken in November of 2022 on DARHT Axis 1. The experimen tal measurement techniques include a platinum calorimeter, a diamond radiation detector (DRD), and a Compton diode (CD). Gafchromic EBT3 self-developing dosimetry film was also used, but no useful results were obtained. Beam charge and energy were recorded and dose was calculated with this information using xtr with Dosecalcx, and simple dose charge-energy scaling. In this pa per, we will discuss the target geometry and experimental layout, the methods of measuring dose, dose diagnostics and measurement of beam charge and energy, and the comparisons of data and calculations.

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43 PARTICLE ACCELERATORSBremsstrahlung radiationCalorimeterCompton diodeDiamond Radiation Detectors

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Moir, David C. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000214505259), Jaworski, Michael Andrew [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000266637042), Abdallah, Kimberly Lynn [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)], Brooks, Robert Lee [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)], Gonzales, Andrew Geronimo [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)], Ortiz, Gabriel Thomas [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000331275851), Ronquillo, Daniel [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)], Sanchez, Manolito [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)], Snider, Samuel Eugene II [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]. 2025-10-21. DARHT Axis 1 Bremsstrahlung Dose Measurements. https://doi.org/10.2172/2999889

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