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   Shields, Photomultiplier

Electromagnetic shielding is the process of limiting the flow of electromagnetic fields between two locations, by separating them with a barrier made of conductive material. Typically it is applied to enclosures, separating electrical devices from the 'outside world', and to cables, separating wires from the environment the cable runs through. Electromagnetic shielding used to block radiofrequency electromagnetic radiation is also known as RF shielding.

The shielding can reduce the coupling of radio waves, visible light, electromagnetic fields and electrostatic fields, though not static magnetic fields. (A conductive enclosure used to block electrostatic fields is also known as a Faraday cage.) The amount of reduction depends very much upon the material used, its thickness, and the frequency of the fields of interest.



Bronze Partners
Ad-Vance Magnetics, Inc.
Amuneal Manufacturing Corp.
Eagle Magnetic Company, Inc.
Electron Tubes Inc.
Hamamatsu Corp.
Magnetic Radiation Laboratories
Magnetic Shield Corp.
Products For Research
The MuShield Company Inc.
Fixed and programmable amplifiers - Frequency Devices

 

Books
Radiation Detection and Measurement
Glenn F. Knoll

Excerpt - page 735: "... with standard TLD readout, the technique consists of using a photomultiplier tube to measure the light ... filters can be used to shield the photomultiplier tube from the direct or reflected laser light ..."
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The Fundamentals of Imaging Physics and Radiobiology: For the Radiologic Technologist
Joseph Selman

Excerpt - page 344: "... 344 The Fundamentals of Imaging Physics and Radiobiologg 'REAMPLIFIER Pb SHIELD PHOTOMULTIPLIER TUBE JSING .IMATOR ,us Figure 26.17. A photomultiplier tube (PMT) ..."
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Instrumentation Reference Book, Third Edition
Walt Boyes

Excerpt - page 538: "... and produce light flashes which can be detected by the photomultiplier to which the detector is ... material, the protons proAluminum light shield Photomultiplier 6U-ZnS(Ag) thin layer Perspex Figure 22.13 Thermal neutron scintillation ..."
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Modern Practice of Gas Chromatography
Robert L. Grob and Eugene F. Barry

Excerpt - page 302: "... The diffusion flame is situated inside the burner tip, which shields the photomultiplier tube (PMT) from a direct view of the flame. With ..."
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Enzyme Structure, Part J, Volume 117: Volume 117: Enzyme Structure Part J (Methods in Enzymology)
Nathan P. Colowick and Nathan P. Kaplan

Excerpt - page 121: "... light intensity. The outlet slit serves mainly as a stray-light shield for the photomultiplier which is painted black on sides and back. There is ..."
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Steroids and Isoprenoids, Part A, Volume 110: Volume 110: Steroids and Isoprenoids Part A (Methods in Enzymology)
Nathan P. Colowick and Nathan P. Kaplan

Excerpt - page 308: "... the cuvettes and a Corning filter CS-96 is used to shield the photomultiplier tube from actinic light. It is known that violaxanthin deepoxidation ..."
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Analytical Instrumentation
Béla G. Lipták

Excerpt - page 330: "... hydrogen and air are burned in a hollow tip that shields the flame from direct view of the mirror and photomultiplier tube. When phosphorus is present, the emission occurs above the ..."
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X-rays in Atomic and Nuclear Physics
N. A. Dyson

Excerpt - page 173: "... (1967). Reflecting crystal Sample X-ray tube _ Slot collimators Lead shield Photomultiplier Scintillator ..."
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Spectrophotometry and Spectrofluorimetry: A Practical Approach
Michael G. Gore

Excerpt - page 25: "... the power supply is outside the spectrophotometer. A mu metal shield protects the photomultiplier from `noise'. High quality do brush motors driven in a ..."
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Instrument Engineers' Handbook, Third Edition: Process Measurement and Analysis
Bela Liptak

Excerpt - page 1173: "... hydrogen and air are burned in a hollow tip that shields the flame from direct view of the mirror and photomultiplier tube. When phosphorus is present, the emission occurs above the ..."
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Radioanalytical Methods in Interdisciplinary Research: Fundamentals in Cutting-Edge Applications (Acs Symposium Series)
Carola A. Laue and Kenneth L. Nash

Excerpt - page 56: "... such systems consist of large NaI(Tl) scintillator detectors with attached photomultipliers to read out the light ... light distribution across the photomultipliers. Shield Nal(TI) crystal Photomultiplier Figure 1: Illustration of a collimator-based gamma-ray ..."
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Vitamins and Coenzymes, Part K (Methods in Enzymology)
John N. Abelson and Melvin I. Simon

Excerpt - page 242: "... ferrite transformer . Magnetic Shielding Care must be taken to shield nearby photomultiplier tubes from the magnetic field. This can be accomplished by ..."
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Isotopes in Hydrology, Hydrogeology, and Water Resources
B. P. Singh and Bhishm Kumar

Excerpt - page 136: "... thickness. The scintillator was optically coupled with a RCA 6343 photomultiplier tube using silicone grease having viscosity 6000 cts. A cylindrical Mu-magnet shield surrounded the photomultiplier. A heat insulator (thermocoal) was used to ..."
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The Active X-Ray Sky (Nuclear Physics. B, Proceedings, Supplements, V. 69/1-3.)
L. Scarsi, H. Bradt, P. Giommi, and F. Fiore

Excerpt - page 649: "... observed by BeppoSAX BeppoSAX was launched on May 1st 1996. Photomultipliers of the Lateral Shields of Phoswich Detector Systern were fully operative on June. During ..."
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An Introduction to Optical Dating: The Dating of Quaternary Sediments by the Use of Photon-stimulated Luminescence
M. J. Aitken

Excerpt - Back Matter: "... beyond its mention in Section 3.3. An additional point concerning photomultiplier dark count (component 3a) is ... failure to maintain the electrostatic shield surrounding the photomultiplier at the same potential as the photocathode. ..."
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Instrumentation for Heavy Ion Nuclear Research (Nuclear Science Research Conference Series)
D. Shapira

Excerpt - page 270: "... ring. Not shown are the NaI caps on the BGO shields, nor are the photomultiplier tubes drawn in on either the shields or the central ..."
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Neutrinos and Other Matters: Selected Works of Frederick Reines
Frederick Reines, W. Kropp, M. Moe, and L. Price

Excerpt - page 318: "... 1000 US gallons of liquid scintillator viewed by some 70 photomultiplier tubes. As a shield against natural radioactivity the detector is being enclosed in about ..."
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Hormone Action, Part J: Neuroendocrine Peptides, Volume 124: Volume 124: Hormone Action Part J (Methods in Enzymology)
Nathan P. Colowick and Nathan P. Kaplan

Excerpt - page 97: "... in grooves between each part to prevent light leaks."' The photomultiplier tube (EMI Model 9634 QA, ... surface of the photomultiplier tube shield is threaded to match the thread in the lower end ..."
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Sources and Detection of Dark Matter and Dark Energy in the Universe: Fourth International Symposium Held at Marina del Rey, CA, USA February 23-25, 2000
David B. Cline

Excerpt - page 372: "... is enclosed by a multi-purpose, 1 tonne, PXE-based liquid scintillator shield viewed by 10 PMTs (see ... high energy gammas from the photomultipliers, an active shield for external gammas, a high purity inner ..."
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Nuclear Fusion by Inertial Confinement
Guillermo Velarde, Yigal Ronen, and Jose M. Martinez-Val

Excerpt - page 507: "... X-ray 0 r ; Particle ~~/222 K-edge Scintillator Particle shield filter A Photomultiplier Pi, from B Foil B Filter A Absorption of B ..."
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Ground Engineer's Reference Book
F G Bell

Excerpt - page 248: "... 25/16 In-situ testing of soils Depth indicator Gamma radiation shield Preamplifier Photomultiplier Gamma radiation Scintillator crystal source Gamma radiation shield Gamma radiation ..."
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