Workshop on Dust Charging and Beam-Dust Interaction in Particle Accelerators
→
Europe/Zurich
30/6-019 (CERN)
Christoph Wiesner
(CERN),
Daniel Wollmann
(CERN)
Description
Workshop Objectives
- Improve understanding of beam-dust interactions in particle accelerators, in particular, of dust-charging and release mechanisms.
- Improve understanding of evolution of beam-dust interaction rate as a function of beam and other parameters.
- Present modelling work on beam-dust interactions and their consequences.
- Present research on dust issues in space applications.
- Improve understanding of the behaviour of dust particles in accelerator hardware systems (Vacuum, RF, treated surfaces…) and their consequences.
- Improve understanding of mechanisms of dust migration into sensitive devices, such as high field gradient superconducting cavities, and ways to prevent this migration.
- Identify synergies between particle-accelerator and space-research communities.
- Define next research steps and possible collaborations.
Participation is by invitation only.
Support
Participants
-
-
Convener: J. Uythoven
Sc. secretary: M. BlaszkiewiczConvener: Jan Uythoven (CERN)-
1
Welcome messageSpeaker: Jose Miguel Jimenez (CERN)
-
2
Introduction to WorkshopSpeaker: Daniel Wollmann (CERN)
-
3
Overview of beam-dust issues in accelerators: from AdA to LHCSpeaker: Rudiger Schmidt (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
-
4
Overview of dust issues in space researchSpeaker: Mihaly Horanyi
-
10:35
Coffee break 30/7-012 (CERN)
30/7-012
CERN
-
5
Dust-charging environment in accelerators: synchrotron radiationSpeaker: Vincent Baglin (CERN)
-
6
Dust-charging environment in accelerators: electron cloudsSpeaker: Konstantinos Paraschou (CERN)
-
7
Discussion Session 1
-
1
-
12:15
Lunch break
-
Session 2a: Dust in particle accelerators I (Beam-dust interactions) 30/6-019
Convener: P. Belanger
Sc. secretary: C. HernalsteensConvener: Philippe Belanger (TRIUMF (CA))-
8
Observation of sudden beam loss at SuperKEKb, and possible reasonsSpeaker: HITOMI IKEDA (High Energy Accelerator Research Organization (KEK)-Unknown-Unkn)
-
9
"Fireball" measured inside the RF cavity at SuperKEKbSpeaker: Dr Tetsuo Abe (High Energy Accelerator Research Organization (KEK))
-
10
Dust and beam instabilities: The "16L2" events at LHC - what we know, what we do not know 30/6-019Speaker: Lotta Mether (CERN)
-
11
-
15:25
-
8
-
Convener: X. Wang
Sc. secretary: L. FelsbergerConvener: Xu Wang-
12
Dust charging and dust-surface interaction in the laboratorySpeaker: Cecile Arnas
-
13
Dust issues in nuclear fusion reactorsSpeaker: Svetlana Ratynskaia (Royal Institute of Technology (KTH), Stockholm)
-
14
Theoretical and numerical characterisation of the adhesion and electrostatic charge of dustSpeaker: Jan Deca
-
15
Discussion Session 3
-
12
-
-
-
Session 2b: Dust in particle accelerators I (Beam-dust interactions) 30/6-019
Convener: P. Belanger
Sc. secretary: C. HernalsteensConvener: Philippe Belanger (TRIUMF (CA))-
16
Overview of UFOs during LHC operation - what we know, what we do not knowSpeaker: Anton Lechner (CERN)
-
17
UFO dynamics and pre-charged dust: Simulations and experimental observations at LHCSpeaker: Bjorn Hans Filip Lindstrom (CERN)
-
18
Discussion Session 2
-
10:20
Coffee break 30/7-012
30/7-012
-
16
-
Session 4: Dust in particle accelerators II (Vacuum, surfaces and RF) 30/6-019
Convener: G. Rosaz
Sc. secretary: J. HeronConvener: Guillaume Jonathan Rosaz (CERN)-
19
Issues with beam-dust interaction inside the vacuum chamber at SuperKEKbSpeaker: Yusuke Suetsugu (KEK)
-
20
Dust in accelerator vacuum systems: Vacuum manipulations and beam-screen treatment at LHC 30/6-019Speaker: Cedric Garion (CERN)
-
21
Surface laser treatment of vacuum systems and potential dust issuesSpeaker: Marcel Himmerlich (CERN)
-
19
-
12:00
Lunch break
-
Session 4: Dust in particle accelerators II (Vacuum, surfaces and RF) 30/6-019
Convener: G. Rosaz
Sc. secretary: J. HeronConvener: Guillaume Jonathan Rosaz (CERN)-
22
Analysis and possible sources of dust grains extracted from the LHCSpeaker: Ana Teresa Perez Fontenla (CERN)
-
23
Dust issues and beam losses in LHC injection kickers: What can we learn from it?Speaker: Mike Barnes (CERN)
-
24
Dust issues at DESY (HERA, DORIS, PETRA) and how to avoid them at XFEL and FLASHSpeaker: Lutz Lilje
-
25
Dust migration into RF cavitiesSpeaker: Aveen Mahon (McGill University, (CA))
-
26
Discussion Session 4
-
15:50
Coffee break 30/7-012
30/7-012
-
22
-
-
27
Visits
Visit to CERN's Large Magnet Facility
Visit to the CERN Control Centre (CCC)
-
27
-
-
-
Session 5: Dust charging and dust release in particle accelerators 30/6-019
Convener: M. Horanyi
Sc. secretary: C. ObermairConvener: Mihaly Horanyi-
28
Dust charging mechanisms in acceleratorsSpeaker: Philippe Belanger (TRIUMF (CA))
-
29
Dust charging lofting experiments at LASP, University of ColoradoSpeaker: Xu Wang
-
30
-
10:10
Coffee break 30/7-012
30/7-012
-
28
-
Convener: D. Wollmann
Sc. secretary: C. ObermairConvener: Daniel Wollmann (CERN)-
31
Wrap-up and questions for the discussionSpeaker: Christoph Wiesner (CERN)
-
32
Discussion: Most relevant aspects to be understood and studied? Next steps?
-
31
-
12:30
Lunch break
-
Collaboration Meetings
-