Beam Energy and Diameter Diagnostics for ASD Scorpius Commissioning

Abstract

The commissioning phase of the ASD Scorpius accelerator, a multi-pulse linear induction accelerator, is already underway. To confirm that the accelerator meets requirements, several diagnostics are under development specifically for commissioning. A permanent magnet momentum spectrometer based on a system used at the Dual-Axis Radiographic Hydrodynamic Test (DARHT) facility will provide time-resolved beam energy measurements from below 1.5 MeV to 24 MeV [1] . Both 2-D time-integrated and 1-D time-resolved beam diameter measurements will give information on the spot size and evolution during operation. 2-D time-integrated beam profile measurements will use a gated PI-MAX 4 camera to image the beam profile in fine detail. 1-D time-resolved measurements will use an anamorphic imaging diagnostic previously demonstrated at the DARHT facility [2] . These measurements increase overall signal levels using anamorphic optics to collapse a 2-D image to a 1-D marginal distribution. Use of Bayesian statistics to reconstruct a 2-D image from multiple 1-D measurements is being explored. First use of these diagnostics is planned for 2023.