Method and apparatus for monitoring a charged particle beam

摘要

An ionization chamber with spatial distribution electrode for monitor hadron beam currents used for therapeutic treatment. Ionization chamber comprises humidity control, environmental sensing and real-time correction thereof. A flexible hermetic seal provide for ambient pressure equalization. X-Y electrode planes measure Gaussian distribution of incident particle beam. Methods described herein are suitable to fabricate highly accurate, low scattering electrodes with high spatial resolutions.

主权项

1. An ionization chamber comprising:
a first electrode plane comprising a first plurality of conductive elements; a second electrode plane substantially parallel to said first electrode plane, the second electrode plane comprising a second plurality of conductive elements oriented substantially orthogonally to first plurality of conductive elements; a flexible hermetic seal preventing mixing of a gas within said ionization chamber with surrounding ambient gases; one or more environmental sensors integrated within said ionization chamber and sensing one or more corresponding aspects of said gas within said ionization chamber; and a desiccant cartridge disposed in the interior of said ionization chamber.