Design and performance of the LCLS cavity BPM system

Author

Lill, R. ; Norum, W. ; Morrison, L. ; Sereno, N. ; Waldschmidt, G. ; Walters, D. ; Smith, S. ; Straumann, T.

Author_Institution

Argonne Nat. Lab., Argonne

fYear

2007

fDate

25-29 June 2007

Firstpage

4366

Lastpage

4368

Abstract

In this paper we present the design of the beam position monitor (BPM) system for the LCLS undulator, which features a high-resolution X-band cavity BPM. Each BPM has a TM₀₁₀ monopole reference cavity and a TM₁₁₀ dipole cavity designed to operate at a center frequency of 11.384 GHz. The signal processing electronics features a low- noise single-stage three-channel heterodyne receiver that has selectable gain and a phase locking local oscillator. We will discuss the system specifications, design, and prototype test results.

Keywords

accelerator cavities; beam handling techniques; particle beam diagnostics; phase locked oscillators; prototypes; receivers; wigglers; LCLS cavity BPM system; LCLS undulator; beam position monitor system; dipole cavity; frequency 11.384 GHz; heterodyne receiver; high-resolution X-band cavity; phase locking local oscillator; prototype; signal processing electronics; Band pass filters; Data acquisition; Detectors; Electromagnetic interference; Electron beams; Frequency; Instruments; Local oscillators; Surface impedance; Undulators;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2007. PAC. IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

978-1-4244-0916-7

Type

conf

DOI

10.1109/PAC.2007.4440010

Filename

4440010