Permanent magnet ion profile monitor at the Fermilab main injector

Permanent magnet ion profile monitor at the Fermilab main injector

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, measur...

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Bibliographische Detailangaben
Hauptverfasser: Zagel, J.R., Harding, D.J., Brown, B.C., Glass, H.D., Kozien, L.R., Pruss, S.M., Volk, J.T.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Distortion measurement
Electrons
Flanges
Instruments
Ionization
Magnetic confinement
Magnetic field measurement
Monitoring
Permanent magnets
Steel
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Beschreibung
Zusammenfassung: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.
DOI:10.1109/PAC.2001.986661