A four-dimensional beam-position monitor

Authors
Ieiri, T Kawamoto, T
Citation
T. Ieiri et T. Kawamoto, A four-dimensional beam-position monitor, NUCL INST A, 440(2), 2000, pp. 330-337
Citations number
8
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
440
Issue
2
Year of publication
2000
Pages
330 - 337
Database
ISI
SICI code
0168-9002(20000201)440:2<330:AFBM>2.0.ZU;2-2
Abstract
A new type of beam-position monitor (BPM) has been developed in the KEKB ac celerator. The BPM employs an I/Q (In-phase and Quadrature phase) demodulat or operating at an acceleration frequency of 509 MHz without down convertin g. The peak value of a demodulated beam pulse is sampled every revolution p eriod. Not only horizontal and vertical positions, but also the longitudina l position can be detected turn by turn. The performance of this four-dimen sional BPM is described in detail. A monitor is indispensable for tuning a beam injected into the KEKB. (C) 2000 Elsevier Science B.V. All rights rese rved.