The Cockcroft Institute
Post-graduate
Lecture Courses: Academic Year 2005-6
Specialist
Course
Superconducting
Accelerators
Tutor : Dr M Wilson (Oxford Instruments and consultant)
Location : The Cockcroft Institute (CCLRC Daresbury
Laboratory)
Duration : 2 days (16th June
2006 and 19th June 2006)
Timetable :
Dates
|
Session
|
Time
|
16th June 2006
|
lecture 1
|
10.30am to 11.30am |
|
lecture 2
|
11.45am to 12.45pm |
|
seminar
|
2.00pm to 3.00pm |
| 19th June 2006 |
lecture 1 |
10.30am to 11.30am
|
|
lecture 2 |
11.45am to 12.45pm |
|
seminar |
2.00pm to 3.00pm |
Syllabus
1. Introduction to Superconductors
Where to find more information
Properties of superconductors, critical field, critical temperature
& critical current density
High temperature superconductors HTS
RF superconductivity
RF accelerating cavities
Magnetic fields and how to create them
2. Superconducting Magnets and their Problems
The importance of current density in
magnet design
Magnet load lines and temperature margin
Degraded performance and `training'
The causes of training
Minimum propagating zones MPZ and minimum quench energy MQE
Screening currents and the critical state model
Flux jumping instabilities
Magnetization of the superconductor and the field errors it causes
AC losses in superconductors
3. Cables & quenching
Why do synchrotron magnets need cables?
Magnetic coupling in cables cause extra magnetization
Field errors and ac losses caused by cable magnetization
The quench process, internal and external voltages
Decay times and temperature rise
Propagation of the normal zone
Quench protection schemes, protection of LHC
4. Manufacturing and testing
Conductor and cable manufacture
Magnet manufacture
Measurement of critical current and magnetization
Current leads and persistent current switching
Some examples of superconducting accelerators
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