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Title: Superconducting transmission line particle detector

Abstract

A microvertex particle detector for use in a high energy physic collider including a plurality of parallel superconducting thin film strips separated from a superconducting ground plane by an insulating layer to form a plurality of superconducting waveguides. The microvertex particle detector indicates passage of a charged subatomic particle by measuring a voltage pulse measured across a superconducting waveguide caused by the transition of the superconducting thin film strip from a superconducting to a non- superconducting state in response to the passage of a charged particle. A plurality of superconducting thin film strips in two orthogonal planes plus the slow electromagnetic wave propagating in a superconducting transmission line are used to resolve N/sup 2/ ambiguity of charged particle events. 6 figs.

Inventors:
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
OSTI Identifier:
6295240
Patent Number(s):
PATENTS-US-A7225412
Application Number:
ON: DE89011461
Assignee:
Dept. of Energy ANL; ERA-14-029301; EDB-89-079632
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; SHOWER COUNTERS; DESIGN; INVENTIONS; SUPERCONDUCTING FILMS; SUPERCONDUCTING SUPER COLLIDER; WAVE PROPAGATION; WAVEGUIDES; FILMS; MEASURING INSTRUMENTS; RADIATION DETECTORS; STORAGE RINGS; 440104* - Radiation Instrumentation- High Energy Physics Instrumentation

Citation Formats

Gray, K.E.. Superconducting transmission line particle detector. United States: N. p., 1988. Web.
Gray, K.E.. Superconducting transmission line particle detector. United States.
Gray, K.E.. 1988. "Superconducting transmission line particle detector". United States. doi:.
@article{osti_6295240,
title = {Superconducting transmission line particle detector},
author = {Gray, K.E.},
abstractNote = {A microvertex particle detector for use in a high energy physic collider including a plurality of parallel superconducting thin film strips separated from a superconducting ground plane by an insulating layer to form a plurality of superconducting waveguides. The microvertex particle detector indicates passage of a charged subatomic particle by measuring a voltage pulse measured across a superconducting waveguide caused by the transition of the superconducting thin film strip from a superconducting to a non- superconducting state in response to the passage of a charged particle. A plurality of superconducting thin film strips in two orthogonal planes plus the slow electromagnetic wave propagating in a superconducting transmission line are used to resolve N/sup 2/ ambiguity of charged particle events. 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1988,
month = 7
}
  • A microvertex particle detector for use in a high energy physic collider including a plurality of parallel superconducting thin film strips separated from a superconducting ground plane by an insulating layer to form a plurality of superconducting waveguides. The microvertex particle detector indicates passage of a charged subatomic particle by measuring a voltage pulse measured across a superconducting waveguide caused by the transition of the superconducting thin film strip from a superconducting to a non-superconducting state in response to the passage of a charged particle. A plurality of superconducting thin film strips in two orthogonal planes plus the slow electromagneticmore » wave propogating in a superconducting transmission line are used to resolve N.sup.2 ambiguity of charged particle events.« less
  • This paper describes a microvertex particle detector for use in a high energy physic collider including a plurality of parallel superconducting thin film strips separated from a superconducting ground plane by an insulating layer to form a plurality of superconducting waveguides. The microvertex particle detector indicates passage of a charged subatomic particle by measuring a voltage pulse measured across a superconducting waveguide caused by the transition of the superconducting thin film strip from a superconducting to a non-superconducting state in response to the passage of a charged particle. A plurality of superconducting thin film strips in two orthogonal planes plusmore » the slow electromagnetic wave propogating in a superconducting transmission line are used to resolve N{sup 2} ambiguity of charged particle events.« less
  • A controlled static VAR generator is described including static power switches controlled for coupling a reactive power source onto AC transmission lines for power factor compensation thereof and detection means responsive to the AC transmission line voltage for providing a control signal representative of the amplitude of the line voltage, the control signal being applied to the static power switches; the detection means comprising: means responsive to the AC transmission line voltage for deriving a time related signal V(t) representative thereof and of fundamental frequency ..omega..=2..pi..f; means synchronized with the AC transmission line voltage for providing a first signal representativemore » of cos (..omega..t) and a second signal representative of sin (..omega..t); first multiplier means for providing with the time related signal V(t) and the cos (..omega..t) representative signal a signal representative of a first product V(t)Xcos (..omega..t); second multiplier means for providing with the time related signal V(t) and the sin (..omega..t) representative signal a signal representative of a second product V(t)Xsin (..omega..t); first means for integrating through the fundamental period T the first product representative signal to derive the Fourier coefficient; second means for integrating through the fundamental period T the second product representative signal to derive the Fourier coefficient; and means responsive to the first and second integrating means for deriving the control signal as a voltage amplitude representative signal V.« less
  • A termination for a superconducting power transmission line is disclosed which is comprised of a standard air entrance insulated vertical bushing with an elbow, a horizontal cryogenic bushing linking the pressurized cryogenic cable environment to the ambient temperature bushing and a stress cone which terminates the cable outer shield and transforms the large radial voltage gradient in the cable dielectric into a much lower radial voltage gradient in the high density helium coolant at the cold end of the cryogenic bushing.
  • A termination for a superconducting power transmission line is disclosed which is comprised of a standard air entrance insulated vertical bushing with an elbow, a horizontal cryogenic bushing linking the pressurized cryogenic cable environment to the ambient temperature bushing and a stress cone which terminates the cable outer shield and transforms the large radial voltage gradient in the cable dielectric into a much lower radial voltage gradient in the high density helium coolant at the cold end of the cryogenic bushing.