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Title: Wien filter with integrated vacuum pump

Abstract

An integral Wien filter and vacuum pump for separating charged particles or for orienting their spin direction while maintaining optimal beamline vacuum. The vacuum pump is an ion pump including one or more cylindrical Penning cells to trap and expel electrons. The Wien filter includes orthogonal electric and magnetic fields to direct particles with the desired speed through the device while deflecting particles at undesired speeds. The Wien filter includes two electrodes, one biased positive and one biased negative, a dipole magnet, and means for reversing polarity of the electrodes to flip the spin of the charged particles. Metal plates on either side of the Penning cells embed gas that is ionized by trapped electrons in the Penning cell thus creating vacuum by turning gas into solid. The two metal plates can be configured to obtain vacuum pumping via chemical gettering and for removal of noble gases.

Inventors:
; ;
Issue Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1840237
Patent Number(s):
11056313
Application Number:
16/904,910
Assignee:
jefferson science associates, llc (Newport News, VA)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Patent
Resource Relation:
Patent File Date: 06/18/2020
Country of Publication:
United States
Language:
English

Citation Formats

Poelker, Bernard Matthew, Serrano, Gabriel Gerardo Palacios, and Garcia, Carlos Hernandez. Wien filter with integrated vacuum pump. United States: N. p., 2021. Web.
Poelker, Bernard Matthew, Serrano, Gabriel Gerardo Palacios, & Garcia, Carlos Hernandez. Wien filter with integrated vacuum pump. United States.
Poelker, Bernard Matthew, Serrano, Gabriel Gerardo Palacios, and Garcia, Carlos Hernandez. Tue . "Wien filter with integrated vacuum pump". United States. https://www.osti.gov/servlets/purl/1840237.
@article{osti_1840237,
title = {Wien filter with integrated vacuum pump},
author = {Poelker, Bernard Matthew and Serrano, Gabriel Gerardo Palacios and Garcia, Carlos Hernandez},
abstractNote = {An integral Wien filter and vacuum pump for separating charged particles or for orienting their spin direction while maintaining optimal beamline vacuum. The vacuum pump is an ion pump including one or more cylindrical Penning cells to trap and expel electrons. The Wien filter includes orthogonal electric and magnetic fields to direct particles with the desired speed through the device while deflecting particles at undesired speeds. The Wien filter includes two electrodes, one biased positive and one biased negative, a dipole magnet, and means for reversing polarity of the electrodes to flip the spin of the charged particles. Metal plates on either side of the Penning cells embed gas that is ionized by trapped electrons in the Penning cell thus creating vacuum by turning gas into solid. The two metal plates can be configured to obtain vacuum pumping via chemical gettering and for removal of noble gases.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {7}
}

Works referenced in this record: