Pulsed particle beam vacuum-to-air interface

Title: Pulsed particle beam vacuum-to-air interface

Full Record
Other Related Research

Abstract

A vacuum-to-air interface is provided for a high-powered, pulsed particle beam accelerator. The interface comprises a pneumatic high speed gate valve, from which extends a vacuum-tight duct, that terminates in an aperture. Means are provided for periodically advancing a foil strip across the aperture at the repetition rate of the particle pulses. A pneumatically operated hollow sealing band urges foil strip, when stationary, against and into the aperture. Gas pressure means periodically lift off and separate foil strip from aperture, so that it may be readily advanced. 5 figs.

Inventors:: Cruz, G E; Edwards, W F

Issue Date:: 1987-06-18

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

OSTI Identifier:: 6614718

Patent Number(s):: 6063603

Application Number:: ON: DE89000135

Assignee:: LLNL; ERA-14-013412; EDB-89-027182

Patent Classifications (CPCs):: C - CHEMISTRY C12 - BIOCHEMISTRY C12Q - MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS

Show more

C - CHEMISTRY C12 - BIOCHEMISTRY C12Q - MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS
C12Q1/703 - {Viruses associated with AIDS}
C12Q1/689 - for bacteria
C12Q1/6865 - Promoter-based amplification, e.g. nucleic acid sequence amplification [NASBA], self-sustained sequence replication [3SR] or transcription-based amplification system [TAS]

Show less

DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Resource Relation:: Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; VACUUM SYSTEMS; VALVES; ACCELERATORS; APERTURES; FOILS; INTERFACES; INVENTIONS; CONTROL EQUIPMENT; EQUIPMENT; FLOW REGULATORS; OPENINGS; 430303* - Particle Accelerators- Experimental Facilities & Equipment

Citation Formats


                    Cruz, G E, and Edwards, W F. Pulsed particle beam vacuum-to-air interface.  United States: N. p., 1987. 
        Web.

Copy to clipboard


                    Cruz, G E, & Edwards, W F. Pulsed particle beam vacuum-to-air interface.  United States.

Copy to clipboard


                    Cruz, G E, and Edwards, W F. Thu .  
        "Pulsed particle beam vacuum-to-air interface".  United States.

Copy to clipboard


                    
@article{osti_6614718,

  title        = {Pulsed particle beam vacuum-to-air interface},

  author       = {Cruz, G E and Edwards, W F},

  abstractNote = {A vacuum-to-air interface is provided for a high-powered, pulsed particle beam accelerator. The interface comprises a pneumatic high speed gate valve, from which extends a vacuum-tight duct, that terminates in an aperture. Means are provided for periodically advancing a foil strip across the aperture at the repetition rate of the particle pulses. A pneumatically operated hollow sealing band urges foil strip, when stationary, against and into the aperture. Gas pressure means periodically lift off and separate foil strip from aperture, so that it may be readily advanced. 5 figs.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1987},

  month        = {6}

}

Copy to clipboard

Patent:

Search for the full text at the U.S. Patent and Trademark Office

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Pulsed particle beam vacuum-to-air interface

Patent Cruz, Gilbert E [Pleasanton, CA]; Edwards, William F [Livermore, CA]

A vacuum-to-air interface (10) is provided for a high-powered, pulsed particle beam accelerator. The interface comprises a pneumatic high speed gate valve (18), from which extends a vacuum-tight duct (26), that termintes in an aperture (28). Means (32, 34, 36, 38, 40, 42, 44, 46, 48) are provided for periodically advancing a foil strip (30) across the aperture (28) at the repetition rate of the particle pulses. A pneumatically operated hollow sealing band (62) urges foil strip (30), when stationary, against and into the aperture (28). Gas pressure means (68, 70) periodically lift off and separate foil strip (30) frommore »« less
Full Text Available
Vacuum chamber for containing particle beams

Patent Harvey, A

A vacuum chamber for containing a charged particle beam in a rapidly changing magnetic environment comprises a ceramic pipe with conducting strips oriented along the longitudinal axis of the pipe and with circumferential conducting bands oriented perpendicular to the longitudinal axis but joined with a single longitudinal electrical connection. When both strips and bands are on the outside of the ceramic pipe, insulated from each other, a high-resistance conductive layer such as nickel can be coated on the inside of the pipe.
Method and split cavity oscillator/modulator to generate pulsed particle beams and electromagnetic fields

Patent Clark, M C; Coleman, P D; Marder, B M

A compact device called the split cavity modulator whose self-generated oscillating electromagnetic field converts a steady particle beam into a modulated particle beam. The particle beam experiences both signs of the oscillating electric field during the transit through the split cavity modulator. The modulated particle beam can then be used to generate microwaves at that frequency and through the use of extractors, high efficiency extraction of microwave power is enabled. The modulated beam and the microwave frequency can be varied by the placement of resistive wires at nodes of oscillation within the cavity. The short beam travel length through themore »« less
Vacuum chamber for containing particle beams

Patent Harvey, Alexander [Los Alamos, NM]

A vacuum chamber for containing a charged particle beam in a rapidly changing magnetic environment comprises a ceramic pipe with conducting strips oriented along the longitudinal axis of the pipe and with circumferential conducting bands oriented perpendicular to the longitudinal axis but joined with a single longitudinal electrical connection. When both strips and bands are on the outside of the ceramic pipe, insulated from each other, a high-resistance conductive layer, such as nickel can be coated on the inside of the pipe.
Full Text Available
Vacuum-to-air interface for the advanced test accelerator beam director

Conference Cruz, G E; Edwards, W F; Kavanagh, D P; ...

A vacuum-to-air transition was created to facilitate the Lawrence Livermore National Laboratory's Advanced Test Accelerator (ATA) electron beam 1-Hz pulse rate. It is necessary that a pulsed particle beam go from a region at 10/sup -6/ torr through a 1-cm-diam maximum aperture into a region at 760 torr. This must be accomplished without the use of windows or solid barriers. Two tests will be conducted on the vacuum-to-air interface. The first determines pressure profiles through 1.0-mm- and 10.0-mm-diam orifices. The second test employs an expendable foil and foil advancement mechanism. In this paper, the experimental results of the orifice testmore »« less
Full Text Available

Similar Records