Simulations of higher order modes in the ACC39 module of FLASH

2012/05/17 by I.R.R. Shinton, Shinton, I. R. R., R.M. Jones +5 · 1 citation
Engineering · #Accelerator Physics (physics.acc-ph) #FOS: Physical sciences #Optical Systems and Laser Technology

paper · doi:10.48550/arxiv.1205.3935

openalex publication_date 2012/05/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29

Abstract

This study is focused on the development of a HOM-based BPM system for the ACC39 module currently installed and in operation at FLASH. A similar system is anticipated to be installed at XFEL. Coupled inter-cavity modes are simulated together with a limited band of trapped modes. A suite of finite element computer codes (including HFSS and ACE3P) and globalised scattering matrix calculations (GSM) are used to investigate the modes in these cavities with a view to providing guidance on their use as a cavity beam diagnostic.

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• A Study of Beam Position Diagnostics with Beam-excited Dipole Higher Order Modes using a Downconverter Test Electronics in Third Harmonic 3.9 GHz Superconducting Accelerating Cavities at FLASH

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