RF Electronics for the Measurement of Beam Induced Higher Order Modes (HOM) Implemented in the MICROTCA.4 Form Factor
| Autor: | Jabłoński, Szymon, Baboi, Nicoleta, Mavrič, Uros, Schlarb, Holger |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | 9th International Particle Accelerator Conference, IPAC'18, Vancouver, Canada, 2018-04-29-2018-05-04 |
| DOI: | 10.3204/pubdb-2018-02045 |
| Popis: | 9th International Particle Accelerator Conference, IPAC’18, Vancouver, Canada, 29 Apr 2018 - 4 May 2018; 3 pp. (2018). Higher order modes (HOM) excited in RF accelerating cavities by a particle beam can be used for electron beam diagnostics. Phase of a monopole HOM provides infor-mation about the beam phase relative to the externally induced RF field in a cavity (BPhM) [1] . Furthermore, the amplitude of a dipole mode is proportional to the beam position in the cavity, hence it can be used for beam position monitoring (BPM). In this paper we present a proto-type of an instrument implemented in the MicoTCA.4 form factor for the measurement of the HOMs at FLASH and Eu-XFEL. The prototype consists of an analog module, which is used for filtering and conditioning of the selected modes, and a digital module responsible for digitization and signal processing. We present the instruments performance and discuss its influence on the precision of the HOM-based diagnostics. |
| Databáze: | OpenAIRE |
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