2023-11-27
14:55 |
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Opening
/ Knobloch, Jens (speaker) (Helmholtz-Zentrum Berlin & Universität Siegen) ; Tecker, Frank (speaker) (CERN) ; Vollinger, Christine (speaker) (CERN)
2023 - 0:59:53.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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2023-11-27
11:28 |
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Multipacting Breakdowns
/ Wuensch, Walter (speaker) (CERN)
The lecture “Multipactor and Breakdown” gives an introduction into the two main arcing phenomena encountered in high-power RF systems. The basic resonant character of multipactor and the role of secondary electron yield is shown. [...]
2023 - 0:52:15.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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2023-11-27
11:28 |
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HOM mitigation
/ Baboi, Nicoleta (speaker) (DESY)
Higher Order Modes (HOM) in accelerating structures are resonant electromagnetic fields excited and left behind by charged particle bunches. They can dramatically degrade the beam quality in accelerators, such as the multi-bunch energy spread and transverse emittance and therefore, one has to study and make them harmless carefully. [...]
2023 - 0:36:52.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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2023-11-27
11:28 |
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High beta cavities II
/ Wuensch, Walter (speaker) (CERN)
The lectures “High-Beta Cavities I and II” cover the main concepts that underly acceleration of relativistic beams, with a focus on traveling wave acceleration. These include the concepts of phase velocity and synchronism with the beam, group velocity, periodically loaded accelerating structures, the Brillouin diagram and the fundamental theorem of beam loading derived from an energy balance point of view..
2023 - 0:38:29.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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2023-11-27
11:28 |
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Transverse deflecting cavities
/ Burt, Graeme (speaker)
Many applications require RF cavities that deflect the beam transversely, where the field needs to vary faster than can be achieved using magnets. This lecture studies dipole modes used for these applications and uses Panofsky-Wenzel theorem to look at transverse voltages, beam loading and mode requirements. [...]
2023 - 0:55:36.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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2023-11-27
11:28 |
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RF manipulations II
/ Damerau, Heiko (speaker) (CERN)
Beyond increasing the energy of charged particles, RF frequency systems in accelerators allow to control longitudinal beam properties like distance between the bunches, their length, position in time, as well as the orbit length in a synchrotron. This is essential to adapt the beam parameters to the requirements of experiments or downstream accelerators. [...]
2023 - 0:58:07.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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2023-11-27
11:28 |
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High beta cativies I
/ Wuensch, Walter (speaker) (CERN)
The lectures “High-Beta Cavities I and II” cover the main concepts that underly acceleration of relativistic beams, with a focus on traveling wave acceleration. These include the concepts of phase velocity and synchronism with the beam, group velocity, periodically loaded accelerating structures, the Brillouin diagram and the fundamental theorem of beam loading derived from an energy balance point of view..
2023 - 0:47:00.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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2023-11-27
11:28 |
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RF manipulations I
/ Damerau, Heiko (speaker) (CERN)
Beyond increasing the energy of charged particles, RF frequency systems in accelerators allow to control longitudinal beam properties like distance between the bunches, their length, position in time, as well as the orbit length in a synchrotron. This is essential to adapt the beam parameters to the requirements of experiments or downstream accelerators. [...]
2023 - 0:55:47.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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2023-11-27
11:28 |
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Longitudinal instabilities & Intensity effects
/ Shaposhnikova, Elena (speaker)
In this lecture, dealing with intensity effects, the equations of motion with induced beam voltage are analysed.
This allows, first, to describe single-bunch potential well distortion and loss of Landau damping. Then the linearised Vlasov equation is used to derive step-by-step the Lebedev equation. [...]
2023 - 0:54:16.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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2023-11-27
11:28 |
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Power Coupling + Matching
/ Burt, Graeme (speaker)
In order to maximise the power delivered to the cavity we must minimise reflections. Reflections are minimised when the source and load impedances are equal, however this is difficult when the cavity impedance is orders of magnitude higher than the source. [...]
2023 - 0:56:17.
CERN Accelerator School; CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
External links: Talk details; Event details
In : CAS course on "RF for Accelerators", 18 June - 01 July 2023, Berlin Germany
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