European Cyclotron Progress Meeting 2012

Session

Beam dynamics

11 May 2012, 13:30

Auditorium (PSI)

Conveners

Beam dynamics

• Willem Kleeven (IBA)

10. Transverse-Longitudinal Coupling in High-Intensity Cyclotrons

Dr Christian Baumgarten (Paul Scherrer Institut, 5232 Villigen PSI, Switzerland)

11/05/2012, 13:30

Talk

Isochronous cyclotrons have no longitudinal focusing at low beam intensities. However, at high intensities the space charge force induces coupling of longitudinal and horizontal motion. This effect is used in the INJECTOR II cyclotron and allows operation without flattop cavity. The linear coupling terms are modeled and analyzed with emphasis on the cyclotron phase curve.

17. High intensity problems study on the H2+ cyclotrons for the DAEdALUS project

Dr Jianjun Yang (Massachusetts Institute of Technology)

11/05/2012, 13:55

Talk

In the DAE$\delta$ALUS (Decay-At-rest Experiment for $\delta_{CP}$ studies At the Laboratory for Underground Science) project, ultra-high power proton cyclotrons are proposed, which should efficiently provide the necessary proton beams in the range of 1 to 8 MW with a kinetic energy up to 800 MeV. The evaluation of space charge effects are challenging, for both the injector cyclotron (DIC)...

14. OPAL Simulation for PSI Medical Cyclotron COMET

Dr Hui Zhang (Paul Scherrer Institut)

11/05/2012, 14:20

Talk

The PSI medical cyclotron COMET is modelled using the program OPAL, a tool developed at PSI for charged particle optics in accelerator structures and beam lines. For the proper simulation of the COMET cyclotron including the crucial central region, a new feature is introduced to OPAL, which enables a versatile combination of multiple 3D field maps for the acceleration. For the beam collimation...