Self-shielding flex-circuit drift tube, drift tube assembly and method of making

United States Patent

April 26, 2016
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Self-Shielding Flex-Circuit Drift Tube
The present disclosure is directed to an ion mobility drift tube fabricated using flex-circuit technology in which every other drift electrode is on a different layer of the flex-circuit and each drift electrode partially overlaps the adjacent electrodes on the other layer. This results in a self-shielding effect where the drift electrodes themselves shield the interior of the drift tube from unwanted electro-magnetic noise. In addition, this drift tube can be manufactured with an integral flex-heater for temperature control. This design will significantly improve the noise immunity, size, weight, and power requirements of hand-held ion mobility systems such as those used for explosive detection.
February 5, 2015
H01J 49/40 (20060101); G01N 27/62 (20060101); H01J 49/00 (20060101); H01J 49/06 (20060101);
GOVERNMENT RIGHTS This invention was made with Government support under Contract No. DE-AC04-94AL85000 between Sandia Corporation and the U.S. Department of Energy. The Government has certain rights in the invention.