Abstracts Brochure - CERN

TUPCH158
TUPCH159
TUPCH160
TUPCH161
27-Jun-06 16:00 - 18:00 TUPCH — Poster Session
High Power, Solid State RF Amplifiers Development for the EURISOL Proton Driver
A 5 kW solid-state RF amplifier for the SPES
F. Scarpa, A. Facco, D. Zenere (INFN/LNL)
and EURISOL projects has been built and extensively
tested. High reliability and low cost
are the main goals for this device, an evolution of a 2.5 kW unit previously developed and presented at EPAC 02.
The description of the amplifier, especially designed for superconducting cavities, its characteristics and test results
will be illustrated and discussed, as well as the design and construction of two new 10 kW amplifier units that have
recently started.
High Power Waveguide Switching System for SPring-8 Linac
T. Taniuchi, T. Asaka, H. Dewa, H. Hanaki, T. Kobayashi, A.
Mizuno, S. Suzuki, H. Tomizawa, K. Yanagida (JASRI/SPring-8)
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A vacuum waveguide switch has been developed
to build a backup system of an RF
source for the electron injector system and
the klystron drive line in the SPring-8 linac.
A high power test of the waveguide switch was carried out, and the maximum RF power of 62 MW in peak, 1µsecond
in pulse width and 10 pps in repetition rate was achieved without serious problems in RF and vacuum characteristics.
The backup system utilizing this waveguide switch has been installed in the electron injector system.
Novel Conception of Beam Temperature in Accelerator and Applications
In this paper, we will introduce a novel con-
D. Dong (IHEP Beijing)
ception of beam temperature in accelerator,
discuss the calculation method. And finally
the author will show an example on the beam temperature in a klystron.
Klystron Development in IHEP
Recent klystron developments at the Insti-
Z. Zusheng, D. Dong (IHEP Beijing)
tute of High Energy Physics (Beijing) are
described. Detailed numerical analysis has
been carried out in order to meet all the requirements. Although bandwidth and efficiency are competing demands,
not easily met by the same design, the simulation predicts high efficiency. Another important aspect which is being
taken into account for the design is operational stability of the tube. This paper describes the recent development
of a S-band 45MW klystron for BEPCII Linac. A pro-type tube has been manufactured in 2005; and the test results
showed that this pro-type tube can produces an output power of more 45MW at 300kV with an efficiency of 42%.
Initial tests indicate the achievement of the basic power objectives. High electric fields in the electron gun, output gap
and output window are all potential problems.