Gerigk, F.

Paper	Title	Page
TUPAN093	Simulation of the CERN PS Booster Performance with 160 MeV H- Injection from Linac4	1595
	F. Gerigk, M. Aiba, C. Carli, M. Martini CERN, Geneva S. M. Cousineau ORNL, Oak Ridge, Tennessee
	The ultimate luminosity (2.3 x 1034 cm-2 s-1) in the LHC can only be reached or even exceeded if a major upgrade of the CERN proton injector complex takes place. The first identified bottleneck towards higher brightness beams is the 50 MeV proton injection of Linac2 into the PS booster (PSB). Doubling the intensity in the PSB can be achieved with a new linac (Linac4) which increases the injection energy to 160 MeV. Linac4 will provide H- ions and charge-exchange injection will be used in the PSB instead of using the present multi-turn proton injection scheme. The code ACCSIM is used to study the H- injection process and to determine if the requested intensities can be reached within the specified emittance budgets. The results are then compared with ORBIT simulations. In the longitudinal plane we use ESME to study various capture schemes.
TUPAN109	160 MeV H- Injection into the CERN PSB	1628
	W. J.M. Weterings, G. Bellodi, J. Borburgh, T. Fowler, F. Gerigk, B. Goddard, K. Hanke, M. Martini, L. Sermeus CERN, Geneva
	The H- beam from the proposed LINAC4 will be injected into the four existing rings of the PS Booster at 160 MeV. A substantial upgrade of the injection region is required, including the modification of beam distribution system and the construction of a new H- injection system. This paper discusses beam dynamics and hardware requirements and presents the results of optimisation studies of the injection process for different beam characteristics and scenarios. The resulting conceptual design of the injection region is presented, together with the main hardware modifications and performance specifications.
FROBC02	RF Structures for Linac4	3821
	F. Gerigk, N. Alharbi, M. Pasini, S. Ramberger, M. Vretenar, R. Wegner CERN, Geneva
	Linac4 is proposed to replace the existing proton linac at CERN (Linac2). Using an increased injection energy of 160 MeV instead of 50 MeV Linac4 is expected to double the beam intensity in the PS Booster and will thus be the first step towards higher brightness beams in the LHC. In this paper we re-assess the choice of RF structures for Linac4. Different accelerating structures for different energy ranges are compared in terms of RF efficiency, ease of construction and alignment, necessary infrastructure, and cost. Eventually we present the final choice of structures for Linac4.
	Slides