The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2018
Filed:
Aug. 09, 2016
Hamamatsu Photonics K.k., Hamamatsu-shi, Shizuoka, JP;
Masahiro Hayashi, Hamamatsu, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
The present embodiment relates to a charged-particle detector, etc. provided with a structure for effectively suppressing ion feedbacks under a low-vacuum environment. In order to capture the residual-gas ions, which are generated by collisions between the electrons output from a MCP unitand residual-gas molecules, by a second electrode, which is electrically insulated from a first electrode, which is mainly for capturing electrons, the potential of the first electrodeis set to be higher than an output-side potential of the MCP unit, and, on the other hand, the potential of the second electrodeis set to be lower than the output-side potential of the MCP unit. As a result, the ion feedbacks to the MCP unitare effectively suppressed.