A Multigigahertz Beam-Current and Position Monitor

A self-integrating magnetic-loop device having a risetime of less than 175 ps has been developed to monitor the temporal behavior of the electron beam current and position within each 3.3-ns micropulse generated by the PHERMEX rf linear accelerator. Beam current is measured with a 2-GHz bandwidth by...

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Bibliographic Details
Published inIEEE transactions on nuclear science Vol. 32; no. 5; pp. 1956 - 1958
Main Authors Carlson, R. L., Stout, L. E.
Format Journal Article Conference Proceeding
LanguageEnglish
Published United States IEEE 01.10.1985
Subjects
430200 - Particle Accelerators- Beam Dynamics, Field Calculations, & Ion Optics
ACCELERATORS
Bandwidth
BEAM CURRENTS
BEAM MONITORS
BEAM TRANSPORT
BEAMS
Cameras
CURRENTS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRON BEAMS
Laboratories
LEPTON BEAMS
LINEAR ACCELERATORS
MAGNET COILS
Magnetic field measurement
Magnetic fields
MEASURING INSTRUMENTS
Monitoring
MONITORS
PARTICLE ACCELERATORS
PARTICLE BEAMS
POSITIONING
Probes
PULSE TECHNIQUES
Resistors
Wire
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Summary:A self-integrating magnetic-loop device having a risetime of less than 175 ps has been developed to monitor the temporal behavior of the electron beam current and position within each 3.3-ns micropulse generated by the PHERMEX rf linear accelerator. Beam current is measured with a 2-GHz bandwidth by combining these loops in a four-port hybrid summer. Another application of these loops uses two 180° hybrids to give 2-GHz time-resolved beam position to an accuracy of 1 mm. These sensors are nonintrusive to the propagating beam and allow ultrafast beam measurements previously restricted to the technique of recording the Cerenkov-light emission from an intercepting Kapton foil using a streak camera.
Bibliography:W-7405-ENG-36
LA-UR-85-1655; CONF-850504-91
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.1985.4333779