Title :
Permanent magnet ion profile monitor at the Fermilab main injector
Author :
Zagel, J.R. ; Harding, D.J. ; Brown, B.C. ; Glass, H.D. ; Kozien, L.R. ; Pruss, S.M. ; Volk, J.T.
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
An ionization profile monitor can collect either ions or electrons produced from residual gas ionization. A magnetic field can be used to confine the drift path of the electrons, reducing distortion introduced into the clearing electric field by the beam space charge. We have designed, built, measured, and installed in the Fermilab Main Injector a permanent magnet for this purpose. We discuss the requirements for such a magnet, especially the effect of magnetic strength and imperfections on the measured electron profiles, and the performance of the magnet as built
Keywords :
magnetic field measurement; particle beam diagnostics; permanent magnets; Fermilab Main Injector; electron profiles; ionization profile monitor; magnetic field measurements; permanent magnet ion profile monitor; space charge; Distortion measurement; Electrons; Flanges; Instruments; Ionization; Magnetic confinement; Magnetic field measurement; Monitoring; Permanent magnets; Steel;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.986661
