Measurements on Prototype Inductive Adders with Ultra-flat-top Output Pulses for CLIC DR Kickers

Janne Holma, M.J. Barnes, Carolina Belver-Aguilar

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific


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. The CLIC pre-damping rings and damping rings (DRs) will produce ultra-low emittance beam with high bunch charge. To avoid beam emittance increase, the DR kicker systems must provide extremely flat, high-voltage, pulses. The specifications for the DR extraction kickers call for a 160 ns duration flat-top pulses of ±12.5 kV, 250 A, with a combined ripple and droop of not more than ±0.02 % (±2.5 V). An inductive adder is a very promising approach to meeting the specifications because this topology allows the use of both passive and analogue modulation methods to adjust the output waveform. Recently, two five-layer, 3.5 kV, prototype inductive adders have been built at CERN. The first of these has been used to test the passive and active analogue modulation methods to compensate voltage droop and ripple of the output pulses. Pulse waveforms have been recorded with ±0.05 % relative (±1.0 V) stability for 160 ns flat-top duration at 1.823 kV.
Original languageEnglish
Title of host publicationIPAC2014: Proceedings of the 5th International Particle Accelerator Conference
PublisherJACoW Publishing
ISBN (Electronic)978-3-95450-132-8
Publication statusPublished - 20 Jun 2014
MoE publication typeB3 Non-refereed article in conference proceedings


Dive into the research topics of 'Measurements on Prototype Inductive Adders with Ultra-flat-top Output Pulses for CLIC DR Kickers'. Together they form a unique fingerprint.

Cite this