U.S. Particle Accelerator School

Fundamentals of Accelerator Physics and Technology with Simulations and Measurements Lab course

Sponsoring University:

Boston University

Course:

Fundamentals of Accelerator Physics and Technology with Simulations and Measurements Lab (undergraduate level)

Instructors:

Louis Emery, Chih-Yuan Yao and Shaoheng Wang, Argonne National Laboratory


Purpose and Audience
If this is your first USPAS program, you should start with this course as it gives an introduction to accelerator physics and technology. It is suitable for last year undergraduate students or students from other fields considering accelerator physics as a possible career. This course also can provide a broader background to engineers and technicians working in the field of accelerator technology.

Prerequisites
A course in mechanics and electromagnetism.

Objectives
Understand the basic working of accelerators and basic principles of beam dynamics. Gain hands-on experience with accelerator hardware used at accelerator labs.

Instructional Method
Lectures will be given in the mornings and lab modules in computer simulations and other measurements (developed over previous offerings of the course) will be given in the afternoon. Three homework assignments will be given.

Course Content
The lectures will start with a survey of the most common accelerator types and an introduction to particle beam dynamics. We will derive formalisms for particle beam bending and focusing. The concepts of orbit, beam emittance, betatron functions and envelope, dispersion, tunes, natural chromaticity with its correction and beam stability will be covered. As emphasis will be on electron accelerators, synchrotron radiation effects, which describe the dynamics of individual particles and beam, will be covered. A discussion of beam interaction with accelerating fields will lead to the understanding of longitudinal motion, synchrotron oscillations and energy acceptance. If there is time some practical topics such as the process of injection and accumulation will be discussed. An introduction to magnet alignment and field errors will convey a feeling for tolerances followed by a description of beam monitoring, orbit measurement and correction.

The hands-on afternoon program is meant to solidify the understanding of some of the morning topics. The computer lab modules cover the simulation of magnets with saturation, the design of a beam transport system, rf-cavities and ultra-high vacuum systems. Equipment for actual magnetic field measurements on a bending magnet, quadrupoles and undulator magnets will be made available to compare simulations with results of real magnet field measurements. Other equipment allows the measurement of various quantities on an rf-cavity and comparison with theoretical and computer-simulated results. Similar exercises will be done with a beam current and position monitor. A lab report on the simulation, measurement and comparison of either one of the magnets or rf cavity is required.

Reading Requirements
(to be provided by the USPAS) "Particle Accelerator Physics I & II", Springer-Verlag (2003) by Helmut Wiedemann. Refresher handouts on prerequisite topics will be available.

Credit Requirements
Students will be evaluated based on performance: final exam (33 % of final grade), homework assignments (34 % of final grade) computer/lab sessions (33 % of final grade).