Measurements on +/-12.5 kV Inductive Adders with +/-200 ppm Pulse Flatness over 900 ns for CLIC Damping Ring Kickers at CERN

Janne Holma, M.J. Barnes, David Woog

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

3 Citations (Scopus)

Abstract

The CLIC study is investigating the technical feasibility of an electron-positron collider with high luminosity and a nominal centre-of-mass energy of 3 TeV. Pre-damping rings and damping rings (DRs) will produce ultra-low emittance beam with high bunch charge. The DR kicker systems must provide extremely stable field pulses to avoid beam emittance increase. The DR extraction kicker system consists of a stripline kicker and two pulse modulators. Specifications for the electromagnetic field pulses require that the modulators generate pulses of up to 900 ns flattop duration, +/-12.5 kV and 305 A, with ripple and droop of not more than 200 ppm (+/-2.5 V) with respect to a reference waveform. Inductive adder topology has been chosen for the pulse modulators: the output waveform can be adjusted by applying analogue modulation methods. Two full-scale, 12.5 kV, 20-layer, prototype inductive adder have been designed and built at CERN and testing has commenced. The prototypes are planned to be tested with a prototype stripline kicker, installed in a beamline, at ALBA Synchrotron Light Source in Spain. The results of laboratory tests to generate a 10.3 kV flat-top pulse and a controlled decay waveform are presented.
Original languageEnglish
Title of host publication2018 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2018
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages21-25
ISBN (Electronic)978-1-5386-5453-8, 978-1-5386-5452-1
ISBN (Print)978-1-5386-5454-5
DOIs
Publication statusPublished - 2018
MoE publication typeA4 Article in a conference publication

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