IPAC'23 - 14th International Particle Accelerator Conference

CPMU development at diamond light source

MOPM096

8 May 2023, 16:30

2h

Sala Mosaici 2

Poster Presentation MC2.T15: Undulators and Wigglers Monday Poster Session

Speaker

Geetanjali Sharma (Diamond Light Source Ltd)

Description

Over the last three years (2020-2022) Diamond Light Source has installed four in-house designed, built, and measured Cryogenic Permanent Magnet Undulators (CPMUs). All four are 2 m long with a 17.6 mm period and have a minimum operating gap of 4 mm. These have replaced existing 2 m long in-vacuum pure permanent magnet (PPM) devices to improve the flux to several of Diamond’s MX (Macromolecular Crystallography) beamlines by a factor of 2-4. In this paper we present the mechanical and cryogenic design considerations, and the shimming procedures and tools developed to produce these devices. The performance of the CPMUs compared to their PPM counterparts will also be reviewed.