JACoW logo

Joint Accelerator Conferences Website

The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.

RIS citation export for THPGW080: Initial Results of High-Gradient Breakdown Tests for W-Band Accelerating Structures

AU  - Othman, M.A.K.
AU  - Dolgashev, V.A.
AU  - Haase, A.A.
AU  - Jawla, S.
AU  - Nanni, E.A.
AU  - Neilson, J.
AU  - Picard, J.F.
AU  - Schaub, S.C.
AU  - Spataro, B.
AU  - Tantawi, S.G.
AU  - Temkin, R.J.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Initial Results of High-Gradient Breakdown Tests for W-Band Accelerating Structures
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Emerging accelerator technology at mm-wave and THz frequencies has recently shown notable progress. Indeed, metallic and dielectric accelerating structures at THz frequencies are plausible candidates toward miniaturization of accelerators. RF breakdown in such structures is a major factor limiting their performance. Therefore, comprehensive analysis of RF breakdown physics in mm-wave accelerating structures is needed, which includes understanding of dependencies of the breakdown rate on geometric, electromagnetic and material properties. In this work we report on high power tests of a 110 GHz single-cell standing wave accelerating structure powered by a 1 MW gyrotron. The RF power is coupled from the gyrotron into the accelerating structure with a Gaussian to TM01 mode converter through a quasi-optical setup. We demonstrate coupling of 10 ns, 100s of kilowatt pulses into the structure using a fast switch and achieving ~150 MV/m accelerating gradients. Measurements of RF signals and field-emitted currents allow for complete comprehensive of the high-gradient behavior of W-band structures, including breakdown probability.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 3769
EP  - 3771
KW  - cavity
KW  - experiment
KW  - electron
KW  - laser
KW  - vacuum
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-THPGW080
UR  - http://jacow.org/ipac2019/papers/thpgw080.pdf
ER  -