X-Band RF Structure and Beam Dynamics Workshop - 44th ICFA Advanced Beam Dynamics Workshop

Session

Plenary Session (Chair R.M.Jones)

2 Dec 2008, 13:40

Cockcroft Institute

30. Drive Beam Dynamics for CLIC

Erik Adli (European Organization for Nuclear Research (CERN))

02/12/2008, 13:40

The CLIC Drive Beam decelerator will extract the CLIC RF-power from the 100A Drive Beam. The energy spread in the beam will be up to 90%, and the focussing and alignment systems must ensure transport of particles of all energies through the decelerator sectors, ensuring minimal losses. This presentation summarizes the current status of the beam dynamic studies of the CLIC decelerator,...

31. Recent Results on CLIC X-Band Prototype Accelerating Structures

Steffen Doebert (CERN)

02/12/2008, 14:20

The CLIC study is conducting an extensive testing program towards a prototype accelerating structure suitable for a liner collider. The requirements for CLIC are a loaded gradient of 100 MV/m for pulse duration of 240 ns with a trip rate below 3*10-7 per meter. These accelerating structures are designed, fabricated and tested in collaboration between KEK, SLAC and CERN. Recent results from...

32. A New Local Field Quantity Describing the High-Gradient Limit of Accelerating Structures

Alexej Grudiev (CERN)

02/12/2008, 14:40

A new local field quantity which gives the high gradient performance limit of accelerating structures in the presence of vacuum rf breakdown is presented. A model of the breakdown trigger based on the pulsed heating of a potential breakdown site by the field emission currents and driven by a new field quantity, a modified Poynting vector, has been derived. The field quantity Sc takes into...

33. First Results from the CLIC Two-Beam Test Stand

Roger Ruber (University of Uppsala)

02/12/2008, 15:00

The Two-beam Test Stand (TBTS) is part of the CTF3 complex at CERN and a unique facility which is designed to test key issues of the two-beam acceleration concept. In particular the power extraction structures (PETS) and the acceleration structures will be tested with beam. The installation of the beam lines was completed this Spring and in September the first drive beam passed all the way...