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42.3: An Electron Gun with Gun Pitch Modulation
Author(s) -
Steinhauser H.,
Gelten R.
Publication year - 2001
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1831756
Subject(s) - electron gun , deflection (physics) , optics , oblique case , physics , electric field , cathode ray , lens (geology) , deflection angle , electron , nuclear physics , linguistics , philosophy , quantum mechanics
Philips Cybertubes use virtual Gun Pitch Modulation (GPM) in the Deflection Unit. Realizing GPM in the gun itself can make the system more compact and more cost effective. The beam deviation is achieved either by electric field variations induced by a dynamic voltage inside the gun or by a magnetic field induced outside the gun. Unconventional apertures in the gun have been used to eliminate the asymmetric haze caused by the oblique entering of the outer electron beams into the main lens.