Work

First LIA measurements of a gated non-invasive beam spot size diagnostic

Year: 2024

Type: report

Abstract: Performance of radiographic accelerators is directly determined by the spot size on the Bremsstrahlung converter target and the dose delivered to the object being measured.Because these measurements are inherently timeintegrated, changes in the beam position on the converter target translate to a larger integrated spot size and blurring in the radiograph.A gated noninvasive beam spot size diagnostic has been developed and implemented on Axis 2 of the Dual Axis Radiographic Hydrodynamic Test facility (DARHT), measuring a time-integrated image of the second pulse in a four-pulse series.Though analysis of the image using the inverse Radon transform is not possible due to low signal-to-noise, estimates of the beam size were made by assuming a particle distribution.Future efforts will aim to reduce background levels from the scintillator through additional x-ray shielding and increase overall signal levels by replacing an imaging fiber bundle with optical coupling.

Source: OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)

DOI: 10.2172/2339617

Authors: Evan R. Scott, USDOE National Nuclear Security Administration (NNSA), Showera H. Haque, Robert W. Hibbard, Stuart R. Miller, Aimee C. Neilsen, Zachary C. Shaw, Michael E. Weller, Trevor J. Burris-Mog

Language: English

Topic: Particle accelerators and beam dynamics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, National Nuclear Security Administration, Office of Defense Programs

Awards: G3549762800, G3760992489, G562066132, G6842555335, G97034446

OpenAlex ID: W4395080403

Cites: 2

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Related to: 10