Advanced Accelerator Physics, 3-15 September 2017, Egham, UK

The course is a follow-up of the Introductory level course and is composed of core lectures on accelerator physics in the mornings and a practical course in the afternoons. The participants will select one afternoon course from the three proposed. For the afternoon courses, the basic idea is that the participants select a topic for which they have no or very little preliminary knowledge. This should allow the participants to discover and get training in a new field of accelerator physics. A series of seminars and tutorials will complete the programme.

 

RF Measurement Techniques

The objective of the course is to familiarize the participants with the following concepts:

- Basics of RF and microwave measurements, spectrum- and vector network-analyzer, calibration techniques, noise figure determination

- The S-parameter concept, transfer functions in the frequency and time domain, amplitude and frequency modulation

- Measurements on warm cavities as well as different passive and active RF elements like directional couplers, amplifiers, RF diodes, circulators

- EMC (electromagnetic compatibility) tests, beam coupling impedance and pick-up sensitivity using the coaxial wire method

- Resonator method for determination of complex permeability and permittivity

 

Beam Instrumentation and Diagnostics

Beam Instrumentation and beam diagnostics are amongst the most challenging and interesting technical subjects related to particle accelerators. These disciplines are required to commission, operate, maintain and improve any accelerator. Not surprisingly people working in this field have to cover a large range of competencies including vacuum technology, particle detectors, electrical and optical sensors, analog and digital electronics, computing and controls, not forgetting basic accelerator physics in order to understand what all their equipment is used for. It should be clear that the proposed course does not aim at covering this vast field within the available time. The authors of the course have therefore made the following choice of subjects:

- electromagnetic monitors (position pickups, intensity measurements)

- transverse diagnostics (tune, chromaticity, coupling)

- profile and emittance measurement

- diagnostics for ultra-short bunches

The main focus of this course will be the basic understanding of measurment principles with their related technological implementation. The students will be encouraged to discuss problems in small working groups and to debate their solutions at the end of each day. They will be given an example of a real accelerator for which they need to propose a suitable suite of diagnostics, presenting and justifying their choices on the final day. An interactive simulation tool will also be available to all students for the generation and understanding of beam signals, allowing them to construct their own acquisition systems for beam position, beam intensity and transverse diagnostics. A day spent in a real laboratory will then give them hands-on experience of how such instrumentation really work.

 

Optics Design and Corrections

Following the lectures on "Lattice cells" and "Insertions", the participants will develop various lattices and optics. The course is intended for those participants who plan to work in this field in the future or have just started and others who want to acquire a basic knowledge how accelerator optics' are designed and developed.

The material learnt in these lectures will be used together with the MAD program to design the layout and to compute the optical parameters. In close collaboration with the tutors, the participants will go through the various different steps of the development procedure for a basic accelerator lattice.

The objective is a realistic design according to the desired properties and parameters. It will include correction elements, dispersion suppressors and a low beta insertion. All participants will have a personal workstation with the necessary software running in a LINUX or WINDOWS environment.

The design tools, the proposed and their own solutions of all exercises and further examples will be made available to the participants at the end of the course on a personalized CD-ROM.

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