No. 36 (2005): CLIC, ion sources, RFQ drift-tube proton linac, beam halo study, multi-turn extraction, stochastic slow extraction, proton therapy facility, RAL front end test stand and plane wave transformer linac, etc.

Issue Editor: A.M. Lombardi, Editor-in-Chief: W. Chou

Issues linked to high intensity proton machines constitute the main theme of this beam dynamics newsletter. In particular, I have collected articles on the less-known mechanisms of intensity limitation as well as the most astute tricks to overcome them. This issue also contains a complete overview of particle sources. Sources, too often forgotten or taken for granted, are really the first stage of acceleration where the initial beam emittance and distribution of particles within the beam are determined. The theme section also contains a description of the beam dynamics in a new “mixed” structure (the Radio Frequency Quadrupole-Drift Tube Linac), a promising structure for the early stages of acceleration. Finally a report on an application of hadron acceleration to medical machines closes the section.

This issue contains a section dedicated to linear collider with a message from Barry Barish, the newly appointed Director of the International Linear Collider Global Design Effort. In addition there is a report on the CLIC test facility.

I have received two activity reports: a contribution on the upcoming test stand facility for the high intensity pulsed proton beam at Rutherford Laboratories and a preliminary report on the ever-expanding accelerator activities in India from our regular correspondent S. Krishnagopal.

A comprehensive summary of the issues discussed at HB2004 together with the announcement of three upcoming ICFA workshops complete the issue.