2025-02-20
16:14 |
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2025-02-20
13:57 |
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Insertion devices - Technology
/ Clarke, Jim (speaker)
This lecture reviews the options for building insertion device magnets. It highlights why permanent magnets are the most popular choice and explains how more complex magnetic field shapes, such as helical, can be generated with simple rectangular permanent magnet blocks. [...]
2022 - 3043.
CERN Accelerator School; CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
External links: Talk details; Event details
In : CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
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2025-02-20
13:57 |
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Electron Cloud and instabilities
/ Li, Kevin Shing Bruce (speaker) (CERN)
Beside the beam's own space charge, collective effects are typically triggered by the direct electromagnetic interaction of the beam with the external chamber and equipment, described through wake fields and beam-coupling impedances, and the interaction of the beam with electron or ion clouds generated in the vacuum chamber through vacuum or surface processes. They manifest themselves as macroscopic responses of the particle beams to intensity dependent excitations, resulting in observables such as coherent tune shifts, coherent instabilities or emittance growth..
2022 - 2975.
CERN Accelerator School; CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
External links: Talk details; Event details
In : CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
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2025-02-20
13:57 |
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Insertion devices - Radiation
/ Clarke, Jim (speaker)
This lecture reviews the synchrotron radiation properties generated by different sources, such as bending magnets, undulators and wigglers. It provides an explanation as to why magnets with centimetre periods generate electromagnetic output at nanometre scale because of relativistic effects. [...]
2022 - 2894.
CERN Accelerator School; CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
External links: Talk details; Event details
In : CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
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2025-02-20
13:57 |
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Beam Instabilities - Transverse
/ Li, Kevin Shing Bruce (speaker) (CERN)
In beam dynamics, low intensity particle beams can be satisfactorily modelled using the single particle approach, in which it is sufficient to describe the motion of particles through the external electromagnetic fields, while neglecting all other types of interactions. Conversely, the evolution of high intensity particle beams must be described including not only the externally applied electromagnetic fields but also the mutual interactions between beam particles as well as the interactions of beam particles with their surrounding environment. [...]
2022 - 3048.
CERN Accelerator School; CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
External links: Talk details; Event details
In : CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
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2025-02-20
13:57 |
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Beam Instabilities - Longitudinal
/ Rumolo, Giovanni (speaker) (CERN)
In beam dynamics, low intensity particle beams can be satisfactorily modelled using the single particle approach, in which it is sufficient to describe the motion of particles through the external electromagnetic fields, while neglecting all other types of interactions. Conversely, the evolution of high intensity particle beams must be described including not only the externally applied electromagnetic fields but also the mutual interactions between beam particles as well as the interactions of beam particles with their surrounding environment. [...]
2022 - 3326.
CERN Accelerator School; CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
External links: Talk details; Event details
In : CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
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2025-02-20
12:40 |
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Overview of Wakefield Accelerator
/ Ferrario, Massimo (speaker)
Recent years have seen spectacular progress in the development of innovative acceleration methods that are not based on traditional RF accelerating structures. These novel developments are at the interface of laser, plasma and accelerator physics and may potentially lead to much more compact and cost effective accelerator facilities. [...]
2022 - 3664.
CERN Accelerator School; CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
External links: Talk details; Event details
In : CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
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2025-02-20
12:40 |
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Instabilities in Linacs
/ Ferrario, Massimo (speaker)
When a charged particle travels across the vacuum chamber of an accelerator, it induces electromagnetic fields, which are left mainly behind the generating particle. These electromagnetic fields act back on the beam and influence its motion. [...]
2022 - 3360.
CERN Accelerator School; CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
External links: Talk details; Event details
In : CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
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2025-02-20
12:40 |
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Collimation
/ Redaelli, Stefano (speaker) (CERN)
Modern accelerators cannot operate high intensity hadron beams without adequate beam collimation systems that are designed to dispose safely and efficiently of unavoidable losses in each phase of the beam operation. This is in particular the case for hadron colliders that rely on super-conducting magnets to push beam energy and current, like the Large Hadron Collider (LHC). [...]
2022 - 3312.
CERN Accelerator School; CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
External links: Talk details; Event details
In : CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
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2025-02-20
12:40 |
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Space charge in circular machines
/ Ferrario, Massimo (speaker)
Space charge forces are those generated directly by the charge distribution, with the inclusion of the image charges and currents due to the interaction of the beam with a perfectly conducting smooth pipe. Space charge forces are responsible of several unwanted phenomena related to beam dynamics, such as energy loss, shift of the synchronous phase and frequency, shift of the betatron frequencies, and instabilities. [...]
2022 - 3445.
CERN Accelerator School; CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
External links: Talk details; Event details
In : CAS Advanced Accelerator Physics, 6-18 November 2022, Sevrier, France
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