Abstracts Brochure - CERN

WEOBPA01
WEOBPA02
WEOBPA03
28-Jun-06 15:00 - 16:00 WEOBPA — Hadron Accelerators
WEOBPA — Hadron Accelerators
First Results of the CRFQ Proof of Principle
D. Davino (Universita’ degli Studi del Sannio) L. Campajola (Naples
University Federico II, Mathematical, Physical and Natural Sciences
Faculty) V. Lo Destro, A.G. Ruggiero (BNL) M.R. Masullo (INFN-
Napoli) V.G. Vaccaro (Naples University Federico II and INFN)
The Circular Radiofrequency Quadrupole is
a new concept of a storage and accelerator
ring for intense beams of light and heavy
ions, protons and electrons. It is basically
a Linear Radiofrequency Quadrupole completely
bent on a circle. The advantages,
which are expected to be the same performance features of a linear RFQ, would be smaller overall dimension with
respect to accelerators with comparable beam intensity and emittance*. A collaboration between BNL and Italian
research institute and universities was set up at the end of 2002 with the aim of the proof of the bending principle**.
The prototype design is based on a 4-rods scheme and have a linear sector followed by a 45-degree curved sector. The
1mA proton beam, produced by a reconditioned RF source, go through a beam gap diameter of 10mm with circular
10mm diameters rods. Each sector is 700mm long and is placed in a 150mm diameter pipe***. The RF power at
202.56MHz is fed by a CERN "Frank James" 50kW amplifier. In this paper the first power and beam tests of the linear
sector are presented.
*A.G. Ruggiero, C-A/AP/65 note, Brookhaven National Laboratory, October 2001. **A.G. Ruggiero et al., Proceedings
of the EPAC 2004 conference.***D. Davino et al., Proceedings of the EPAC 2004 conference.
LEIR Commissioning
C. Carli, P. Beloshitsky, L. Bojtar, M. Chanel, K. Cornelis, B. Dupuy,
J. Duran-Lopez, T. Eriksson, S.S. Gilardoni, D. Manglunki, E. Matli,
C. Oliveira, S. Pasinelli, J. Pasternak, F. Roncarolo, G. Tranquille
(CERN)
The Low Energy Ion Ring (LEIR) is a central
piece of the injector chain for LHC ion operation,
transforming long Linac 3 pulses into
high density bunches needed for LHC. LEIR
commissioning is scheduled to be completed
at the time of the conference. A review of
LEIR commissioning highlighting expected and unexpected problems and actions to tackle them will be given.
1.8 MW Upgrade of the PSI Proton Facility
The PSI proton accelerator delivers currently
P.A. Schmelzbach (PSI)
a 590 MeV beam with an intensity of 2 mA.
The upgrade programme aiming at boosting
the beam power from 1.2 to 1.8 MW includes the ongoing installation of new bunchers in the transfer lines to the
injector cyclotron and between injector and ring cyclotron, the replacement of the Al-cavities of the ring cyclotron by
Cu-cavities operated at 1 MV, and the design and future installation of additional accelerating cavities in the injector
cyclotron. Simulation studies are under way to improve our understanding of the space charge effects at the different
stages of acceleration. The present status of the project will be presented.
268 Chair: U. Ratzinger (IAP, Frankfurt-am-Main)