Title :
Time-varying sextupole corrections during the Tevatron ramp
Author :
Herrup, D.A. ; Syphers, M.J. ; Johnson, D.E. ; Johnson, R.P. ; Tollestrup, A.V. ; Hanft, R.W. ; Brown, B.C. ; Lamm, M.J. ; Kuchnir, M. ; McInturff, A.D.
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
Abstract :
The time behavior of the sextupole component of the Tevatron superconducting dipoles under ramping conditions was studied. Large time-dependent sextupole corrections are necessary to maintain constant chromaticities in the Tevatron. The authors discuss the implementation and results of these corrections in terms of emittance growth and intensity loss during the Tevatron ramp
Keywords :
beam handling equipment; beam handling techniques; proton accelerators; superconducting magnets; synchrotrons; Tevatron ramp; Tevatron superconducting dipoles; constant chromaticities; emittance growth; intensity loss; sextupole corrections; time behavior; Circuits; Coils; Gold; Iron; Laboratories; Monitoring; Resonance; Spectral analysis; Superconducting magnets; Transfer functions;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.73098
