U.S. Particle Accelerator School

U.S. Particle Accelerator School

Education in Beam Physics and Accelerator Technology

University of California, Santa Cruz

Recirculated and Energy Recovered Linear Accelerators

Geoffrey Krafft, Jefferson Lab and Ivan Bazarov, Cornell University

**Purpose and Audience**

The purpose of this course is to introduce the student to the subject of recirculated and energy recovered accelerators. Such accelerators are being contemplated for an increasing variety of applications and are anticipated to become increasingly prevalent in the future. The lectures will be presented at a level that assumes some familiarity with basic accelerator physics. The course will develop those concepts most useful and widely applied in the design, construction, and operation of recirculated and energy recovered accelerators. Beyond basic accelerator physics, the course is largely self-contained. It should prove useful to advanced graduate students and junior research scientists in Accelerator Physics interested in learning more about this important new class of particle accelerators.

**Prerequisites**

Fundamentals of Accelerator Physics, knowledge of Electromagnetic Theory and Relativistic Mechanics at the level of Jackson’s “Classical Electrodynamics”. Some familiarity with the theory of linear accelerators is desirable, but not essential.

**Objectives
**This course will introduce the subject of Recirculated and Energy Recovered Accelerators to the students in a thorough manner. It is anticipated that on completion the student will know and understand many of the major accomplishments in the field to present. Because this particular field is less fully developed than the rest of Accelerator Physics, it is expected that the student will have enough general background as a result of attending this course, to be able to contribute directly to the forefront activity in this field.

**Instructional Method
**This course will consist of approximately 10 lectures, which will be covered during the morning instructional periods. Overnight homework problems will be assigned each night for submission the following morning. One problem on the design of recirculating electron accelerators, best solved with the aid of a computer, will be assigned after each of the first two days lectures. Both calculations will need to be completed by the end of the course.

**Course Content **

Introduction to Recirculated Linear Accelerators, Linear Beam Optics in Recirculated Linacs, Nonlinear Single Particle Dynamics, Collective Effects, RF Acceleration Systems for Recirculated and Energy Recovered Linacs, Injectors for Recirculated Linacs, Effects of Synchrotron and Undulator Radiation on Beam Properties in Recirculated Linacs, Future Applications of Recirculated and Energy Recovered Accelerators.

**Reading Requirements
**[TBD]

**Credit Requirements **

Students will be evaluated based on performance as follows: final exam (20% of final grade), homework assignments (60% of final grade) computer/lab sessions (20% of final grade).