Slow Extraction Workshop 2017

Session

Session 3: Beam quality and improving spill structure

10 Nov 2017, 08:45

6/2-024 - BE Auditorium Meyrin (CERN)

Conveners

Session 3: Beam quality and improving spill structure

• Verena Kain (CERN)
• Sergey Ivanov (Institute for High Energy Physics (IHEP))

43. Experimental requirements on spill quality 15+5'

Johannes Bernhard (CERN)

10/11/2017, 08:45

We will present a short overview of the experimental requirements on the spill quality with an emphasis on the CERN North Area experiments. Together with a short introduction of categories of users at CERN, the main characteristics of the experiments concerning instantaneous intensity, monitoring and impact of non-flat spill structures will be discussed. Finally, a list of possible...

44. Planned measures for improving SIS18 spill quality 15+5'

Dr Peter Schmid

10/11/2017, 09:05

45. Stochastic noise extraction 15+5'

Dr Bernd Alfred Lorentz (Forschungszentrum Jülich)

10/11/2017, 09:25

61. Spill control at the Marburg Ion-Beam Therapy Centre 15 + 5`

Dr Claude Krantz (Marburger Ionenstrahl-Therapiezentrum)

10/11/2017, 09:45

At the p/12C6+ synchrotron of the Marburg Ion-Beam Therapy Centre we use slow extraction by transverse noise (KO-) excitation. The system is equipped with a Dynamic Intensity Control (DIC) loop allowing fast modulation of the spill rate during extraction. By careful adjustment of the exciter noise spectrum relative to the small-amplitude particle tune and the extraction tune, it is possible to...

46. Feedback and feedforward spill control 15+5'

Masahito Tomizawa (masahito.tomizawa@kek.jp)

10/11/2017, 10:05

47. Machine reproducibility / stability and spill quality 15+5'

Francesco Maria Velotti (CERN)

10/11/2017, 10:25

48. Measurements of the spill structure on a wide time range at GSI 15+5'

Peter Forck (GSI)

10/11/2017, 11:15

49. Simulation of micro- and milli- second spill structure 15+5'

Stefan Sorge

10/11/2017, 11:35

50. Magnet power supplies and slow extraction 15+5'

Jean-Paul Burnet (CERN)

10/11/2017, 11:55

51. Spill quality for NASA facility at AGS 15+5'

Kevin Brown (Brookhaven National Laboratory)

10/11/2017, 12:15

52. Spill control for CNAO slow extraction 15+5'

L. Falbo

10/11/2017, 12:35

After a short overview of CNAO machine, the presentation shows how the spill is controlled during extraction:
momentum-amplitude extraction, HEBT chopper, RF phase jump, Empty bucket channelling, Empty sweeping Bucket channelling, Air core quad feedback.
Each topic is first presented under the theoretical point of view, then the results in CNAO machine are shown.