Vretenar, M.

Paper	Title	Page
TUPMA088	High Power RF Testing of a Cell Coupled Drift Tube LINAC Prototype for LINAC4	232
	M. Vretenar, Y. Cuvet, F. Gerigk, J. Marques Balula, M. Pasini CERN, Geneva
	A Cell-Coupled Drift Tube Linac (CCDTL) accelerating structure at 352 MHz has been selected for the energy range 40 to 90 MeV of Linac4, a new injector linac for the CERN accelerator complex. With regard to a conventional DTL in this energy range this structure presents the advantages of lower construction cost and easier access, cooling and alignment of the focusing quadrupoles placed between tanks. A full-scale high-power prototype of about 1/3 of a complete module has been designed and built at CERN. It is fed by a waveguide input coupler of novel conception. This paper summarizes the main mechanical features of the prototype and reports the results of low-power and high-power RF testing.
TUPMA085	LEIR: Towards the Nominal Lead Ion Beam	229
	M. Chanel, M.-E. Angoletta, V. Baggiolini, P. Belochitskii, A. Beuret, A. Blas, J. Borburgh, C. Carli, K. Cornelis, T. Fowler, M. Gourber-Pace, S. Hancock, C. E. Hill, M. Hourican, D. Kuchler, E. Mahner, D. Manglunki, S. Maury, M. M. Paoluzzi, S. Pasinelli, J. Pasternak, U. Raich, F. Roncarolo, C. Rossi, J.-P. Royer, M. Royer, R. Scrivens, L. Sermeus, G. Tranquille, M. Vretenar CERN, Geneva
	The Low Energy Ion Ring (LEIR) is a central piece for LHC ion operation at CERN, transforming long Linac3 pulses into high density bunches needed for LHC. The first phase of LEIR commissioning successfully attained its goal of providing the so-called 'early ion beam' (one bunch of 2.25 108 Lead ions) needed for the first LHC ion runs with reduced luminosity. Studies in view of generating the beam needed for nominal ion operation (2 bunches of 4.5 108 ions in LEIR) are being carried out in parallel with the setting-up of the early beam in the accelerators further downstream in the LHC injector chain. The main characteristics of the machine using a new state of the art electron cooler are discussed together with the latest results.
THXMA02	Linear Accelerator Designs for the Upgrade of the CERN Proton Injector Complex (Linac4, SPL)	529
	M. Vretenar, G. Bellodi, R. Garoby, F. Gerigk, K. Hanke, A. M. Lombardi, S. Maury, M. Pasini, C. Rossi, E. Zh. Sargsyan CERN, Geneva
	Looking beyond the commissioning of the LHC, which is expected to start at the end of 2007, CERN is setting up its scientific plan for the years to come. The concerns about the reliability of the old LHC injectors and the need to progressively remove the technical bottlenecks towards higher luminosity in the LHC have initiated a reflection on the design of the main elements of the LHC injection chain. A plan under consideration foresees in the years 2007-2010 the construction of a 160 MeV H− linear accelerator, Linac4, injecting into the old 1.4 GeV PS Booster (PSB). In a second stage, the PSB could be replaced by a superconducting linac, the SPL, at an energy between 3.5 and 5 GeV. The Proton Synchrotron (PS) would be in turn replaced by a new PS2 reaching a higher energy of 50 GeV. Linac4 and SPL can operate at a higher duty cycle than needed for LHC injection, allowing functioning as a high-intensity facility for neutrino or radioactive ion physics at a later stage. This paper describes the design of the two linear accelerators involved in this upgrade strategy, Linac4 and SPL, and outlines some results of the R&D programme aimed at preparing the construction of Linac4.
	Slides