Title :
Optimization of the NLC final focus system
Author :
Zimmermann, E. ; Helm, R. ; Irwin, J.
Author_Institution :
Linear Accel. Center, Stanford Univ., CA, USA
Abstract :
An optimization scheme for final focus systems is discussed and applied to the NLC design. The optical functions at the defocusing sextupoles, the sextupole strength, and the length of the system must obey eight conditions that are imposed by the spot size increase due to higher-order aberrations, the effects of synchrotron radiation in the bending magnets, power supply ripple, magnet vibration tolerances, and the estimated orbit stability at the sextupoles. These eight conditions determine the minimum optimum length of the system. The NLC final focus design was shortened to this optimum
Keywords :
colliding beam accelerators; electron accelerators; electron beam focusing; linear colliders; optimisation; particle beam stability; NLC; bending magnets; defocusing sextupoles; final focus system; higher-order aberrations; length; magnet vibration tolerances; minimum optimum length; optical functions; optimization; orbit stability; power supply ripple; sextupole strength; spot size; synchrotron radiation; Contracts; Design optimization; Hydrogen; Linear accelerators; Magnets; Power supplies; Stability; Synchrotron radiation; Telescopes; Vibrations;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.504766
