Mini-workshop on Impact of Stray Fields on Accelerators

Name: Mini-workshop on Impact of Stray Fields on Accelerators
Start: 2017-10-04T14:00:00+02:00
End: 2017-10-06T18:00:00+02:00
Location: CERN

4 Oct 2017, 14:00 → 6 Oct 2017, 18:00 Europe/Zurich

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

6/2-024 - BE Auditorium Meyrin

CERN

114

Show room on map

Balazs Andras Heilig (Geological and Geophysical Institute of Hungary), Daniel Schulte (CERN), Eduardo Marin Lacoma (CERN)

Description

As Future Accelerators explore their limits in terms of machine performance, Stray Fields have became a potential obstacle to achieve their goals, being the Compact Linear Collider (CLIC) one example. The 50 km machine is sensitive to dynamic variations of the order of nT and a good understanding of field sources by carrying out precise measurements are required in order to propose possible corrections to asses the viability of such a project.

This workshop is intended to examine natural and technical stray fields sources and potential EM disturbances that could impact the accelerator's performance. Furthermore, possible active and passive remedies and alternative solutions to counter-act the impact of unwanted fields will be discussed.

Registration

Participants

Organizer

emarinla@cern.ch

heilig.balazs@mfgi.hu

0041227679445

Wednesday 4 October
- 14:00 → 14:15
  
  Welcome to the Mini-workshop 15m 6/2-024 - BE Auditorium Meyrin
  
  6/2-024 - BE Auditorium Meyrin
  
  CERN
  
  114
  Show room on map
  
  Description, motivation and scope of the workshop. Review of the agenda and other useful information.
  
  GeneralInformation.pdf
- 14:15 → 14:45
  
  CLIC Overall 30m 6/2-024 - BE Auditorium Meyrin
  
  6/2-024 - BE Auditorium Meyrin
  
  CERN
  
  114
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  Description of the Compact Linear Collider (CLIC). Status and future plans.
  
  Speaker: Philip Nicholas Burrows (University of Oxford (GB))
  
  StrayFields_Oct2017.pdf
  
  StrayFields_Oct2017.ppt
- 14:45 → 15:15
  
  CLIC Sensitivity to Stray Fields 30m 6/2-024 - BE Auditorium Meyrin
  
  6/2-024 - BE Auditorium Meyrin
  
  CERN
  
  114
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  Summary of the obtained sensitivities of CLIC to dynamic variations of Stray Fields.
  
  Speaker: Daniel Schulte (CERN)
  
  Fields.pdf
  
  Fields.pptx
- 15:15 → 15:45
  
  Coffee Break 30m 6/2-024 - BE Auditorium Meyrin
  
  6/2-024 - BE Auditorium Meyrin
  
  CERN
  
  114
  Show room on map
  
  Next to PS Cafeteria
- 15:45 → 16:15
  
  ELENA across Stray fields 30m 6/2-024 - BE Auditorium Meyrin
  
  6/2-024 - BE Auditorium Meyrin
  
  CERN
  
  114
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  The ELENA Project is an example of relevance of Stray Fields on accelerators. Due to its energy range of operation, as it is intended to decelerate 5.3 MeV antiprotons delivered by the CERN Antiproton down to 100 KeV, the impact of Stray Fields on the ring performance is an issue.
  
  Speaker: Christian Carli (CERN)
  
  17_10_04_StrayFieldsWorkshop.pdf
  
  17_10_04_StrayFieldsWorkshop.pptx
- 16:15 → 17:00
  
  Magnet Group Work and Plans 45m 6/2-024 - BE Auditorium Meyrin
  
  6/2-024 - BE Auditorium Meyrin
  
  CERN
  
  114
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  Speakers: Marco Buzio (CERN), Stephan Russenschuck (CERN)
  
  2017 - Ambient fields.pdf
  
  2017 - Ambient fields.pptx
- 17:00 → 17:30
  
  MFGI – CERN Collaboration 30m 6/2-024 - BE Auditorium Meyrin
  
  6/2-024 - BE Auditorium Meyrin
  
  CERN
  
  114
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  Description of the present collaboration between MFGI and CERN. Explanation of the needs of CLIC and accelerators in general (sources identification, field maps..etc), Future plans (Devices, Measurements), and potential new participators
  
  Speaker: Balazs Andras Heilig (Geological and Geophysical Institute of Hungary)
  
  CLIC_miniWS_201701004_v2.pdf
  
  CLIC_miniWS_201701004_v2.pptx
- 17:30 → 17:50
  
  Discussion 20m 6/2-024 - BE Auditorium Meyrin
  
  6/2-024 - BE Auditorium Meyrin
  
  CERN
  
  114
  Show room on map
- 17:50 → 18:30
  
  Linac-4 Visit 40m 6/2-024 - BE Auditorium Meyrin
  
  6/2-024 - BE Auditorium Meyrin
  
  CERN
  
  114
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  Guided visit Linac-4 and switchyard
  
  Speaker: Richard Scrivens (CERN)
- 18:30 → 19:30
  
  Welcome Drink 1h Restaurant 1
  
  Restaurant 1
Thursday 5 October
- 09:00 → 09:45
  
  Natural EM sources 45m 6/2-004
  
  6/2-004
  
  CERN
  
  40
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  Speaker: Dr Ciaran Beggan (British Geological Survey)
  
  Beggan_NaturalEMsignals (1).pdf
  
  Beggan_NaturalEMsignals (1).pptx
- 09:45 → 10:30
  
  Sources: Ultra Low Frequency (ULF) waves. 45m 6/2-004
  
  6/2-004
  
  CERN
  
  40
  Show room on map
  
  Introduction to ULF waves incident on the Earth.
  
  Speaker: Balazs Andras Heilig (Geological and Geophysical Institute of Hungary)
  
  CLIC_miniWS_ULFwaves_v3.pdf
- 10:30 → 11:00
  
  Coffee Break 30m PS Cafeteria
  
  PS Cafeteria
- 11:00 → 11:45
  
  Natural Sources: ELF - VLF phenomena 45m 6/2-004
  
  6/2-004
  
  CERN
  
  40
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  Introduction to ELF - VLF phenomena. lightning-related EM disturbances.
  
  Speaker: Prof. Janos Lichtenberger
  
  clic_ws_vlf.pdf
- 11:45 → 12:30
  
  Sources: Magnetohydrodynamic Waves 45m 6/2-004
  
  6/2-004
  
  CERN
  
  40
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  Introduction to MHD waves, kinetics and non-linear effects.
  
  Speaker: Prof. Lee Dong-Hun (Kyung Hee University)
  
  CERN_MHD_Waves_DHLEE_summary.pdf
  
  CERN_MHD_Waves_DHLEE_summary.pdf
  
  CERN_MHD_Waves_DHLEE_summary.pptx
- 12:30 → 14:00
  
  Lunch 1h 30m
- 14:00 → 14:30
  
  Lessons learned from LEP Experience 30m 6/2-004
  
  6/2-004
  
  CERN
  
  40
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  Description of the LEP action as regards to stray fields
  
  Speaker: Jorg Wenninger (CERN)
  
  LEP-energy.Oct17.pdf
  
  LEP-energy.Oct17.pptx
- 14:30 → 15:00
  
  Technical EM Sources 30m 6/2-004
  
  6/2-004
  
  CERN
  
  40
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  Description of the stray fields measurement campaigns conducted at CERN
  
  Speaker: Eduardo Marin Lacoma (CERN)
  
  Hxy_1207.mp4
  
  Measurements.pdf
- 15:00 → 15:30
  
  Mitigation Concepts & Future Plans 30m 6/2-004
  
  6/2-004
  
  CERN
  
  40
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  Discussion about available active and passive mitigation techniques.
  
  Speaker: Chetan Gohil (University of Oxford)
  
  NEW Mitigation Concepts - Status of Instrument - Feedback Performance.pdf
  
  NEW Mitigation Concepts - Status of Instrument - Feedback Performance.pptx
- 15:30 → 16:00
  
  Coffee Break 30m PS Cafeteria
  
  PS Cafeteria
- 16:00 → 16:30
  
  Helmholtz Compensation Coils Scheme 30m 6/2-004
  
  6/2-004
  
  CERN
  
  40
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  Speaker: Thomas Zickler (CERN)
  
  MW-StrayFields_Helmholtz_Zickler.pdf
- 16:30 → 17:00
  
  Shielding magnetic fields of several Tesla: The FCC Sushi Septum project 30m 6/2-004
  
  6/2-004
  
  CERN
  
  40
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  Example of external magnetic field compensation
  
  Speaker: Kristoff Brunner
  
  bk_strayfields_ws_2017.odp
  
  bk_strayfields_ws_2017.pdf
  
  bk_stray_field_ws_2017.pdf
- 17:00 → 17:20
  
  Discussion 20m 6/2-004
  
  6/2-004
  
  CERN
  
  40
  Show room on map
- 17:20 → 18:00
  
  Magnet Assembly Hall Visit 40m SMA18
  
  SMA18
  
  CERN
- 19:00 → 20:20
  
  Dinner 1h 20m
Friday 6 October
- 09:00 → 10:30
  
  Forthcoming Steps 1h 30m 6/2-024 - BE Auditorium Meyrin
  
  6/2-024 - BE Auditorium Meyrin
  
  CERN
  
  114
  Show room on map
  
  Presentation and discussion about future actions to be taken:
  - identify potential sources by additional measurements.
  - developing a representative model of potential sources.
  - validation of mitigation techniques.
  
  Speakers: Daniel Schulte (CERN), Stephan Russenschuck (CERN)
- 10:30 → 11:00
  
  Coffee Break 30m PS Cafeteria
  
  PS Cafeteria

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Mini-workshop on Impact of Stray Fields on Accelerators

6/2-024 - BE Auditorium Meyrin

CERN

6/2-024 - BE Auditorium Meyrin

CERN

6/2-024 - BE Auditorium Meyrin

CERN

6/2-024 - BE Auditorium Meyrin

CERN

6/2-024 - BE Auditorium Meyrin

CERN

6/2-024 - BE Auditorium Meyrin

CERN

6/2-024 - BE Auditorium Meyrin

CERN

6/2-024 - BE Auditorium Meyrin

CERN

6/2-024 - BE Auditorium Meyrin

CERN

6/2-024 - BE Auditorium Meyrin

CERN

Restaurant 1

6/2-004

CERN

6/2-004

CERN

PS Cafeteria

6/2-004

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PS Cafeteria

6/2-004

CERN

6/2-004

CERN

6/2-004

CERN

SMA18

CERN

6/2-024 - BE Auditorium Meyrin

CERN

PS Cafeteria