Welcome to the Mini-workshop Room: 6/2-024 - BE Auditorium Meyrin Description, motivation and scope of the workshop. Review of the agenda and other useful information.

CLIC Overall

• Philip Nicholas Burrows (University of Oxford (GB))

Room: 6/2-024 - BE Auditorium Meyrin Description of the Compact Linear Collider (CLIC). Status and future plans.

CLIC Sensitivity to Stray Fields

• Daniel Schulte (CERN)

Room: 6/2-024 - BE Auditorium Meyrin Summary of the obtained sensitivities of CLIC to dynamic variations of Stray Fields.

ELENA across Stray fields

• Christian Carli (CERN)

Room: 6/2-024 - BE Auditorium Meyrin 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.

Magnet Group Work and Plans

• Stephan Russenschuck (CERN)
• Marco Buzio (CERN)

Room: 6/2-024 - BE Auditorium Meyrin

MFGI – CERN Collaboration

• Balazs Andras Heilig (Geological and Geophysical Institute of Hungary)

Room: 6/2-024 - BE Auditorium Meyrin 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

Discussion Room: 6/2-024 - BE Auditorium Meyrin

Linac-4 Visit

• Richard Scrivens (CERN)

Room: 6/2-024 - BE Auditorium Meyrin Guided visit Linac-4 and switchyard

Natural EM sources

• Ciaran Beggan (British Geological Survey)

Room: 6/2-004

Sources: Ultra Low Frequency (ULF) waves.

• Balazs Andras Heilig (Geological and Geophysical Institute of Hungary)

Room: 6/2-004 Introduction to ULF waves incident on the Earth.

Natural Sources: ELF - VLF phenomena

• Janos Lichtenberger

Room: 6/2-004 Introduction to ELF - VLF phenomena. lightning-related EM disturbances.

Sources: Magnetohydrodynamic Waves

• Lee Dong-Hun (Kyung Hee University)

Room: 6/2-004 Introduction to MHD waves, kinetics and non-linear effects.

Lessons learned from LEP Experience

• Jorg Wenninger (CERN)

Room: 6/2-004 Description of the LEP action as regards to stray fields

Technical EM Sources

• Eduardo Marin Lacoma (CERN)

Room: 6/2-004 Description of the stray fields measurement campaigns conducted at CERN

Mitigation Concepts & Future Plans

• Chetan Gohil (University of Oxford)

Room: 6/2-004 Discussion about available active and passive mitigation techniques.

Helmholtz Compensation Coils Scheme

• Thomas Zickler (CERN)

Room: 6/2-004

Shielding magnetic fields of several Tesla: The FCC Sushi Septum project

• Kristoff Brunner

Room: 6/2-004 Example of external magnetic field compensation

Discussion Room: 6/2-004

Forthcoming Steps

• Stephan Russenschuck (CERN)
• Daniel Schulte (CERN)

Room: 6/2-024 - BE Auditorium Meyrin 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.