3 edition of Gating characteristics of photomultiplier tubes for lidar applications found in the catalog.
Gating characteristics of photomultiplier tubes for lidar applications
by National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] in [Washington, DC], [Springfield, Va
Written in English
|Statement||John D.W. Barrick.|
|Series||NASA technical memorandum -- 87699.|
|Contributions||United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.|
|The Physical Object|
Overview 3Chapter 9 Position Sensitive Photomultiplier Tubes Chapter 9 describes multianode position-sensitive photomultiplier tubes and center-of-gravity detectiontype photomultiplier tubes, showing their structure, characteristics and application r 10 MCP-PMT This chapter explains MCP-PMTs (photomultiplier tubes. A gain control of a photomultiplier tube (PMT) to discrete levels where the potentials on the dynodes of the PMT are controlled by a network of electrical elements comprising: means for connecting in succession a dynode numbered n and dynodes n+2i, where i=1, 2,, m for maintaining these dynodes at their normal operating potentials;.
used in these applications are high sensitivity, low noise, high operating speed, and a capa-bility to perform time-resolved measurements. Numerous spectroscopy systems use conven-tional photomultiplier tubes (PMT) as photo-detectors due to their high sensitivity in the ultra-violet (UV) region and timing resolutions in the sub-nanosecond range. Method and apparatus is described for remote detection of location and intensity of clear air turbulence through the collection and analyses of back scattered laser light from a region where clear air turbulence may exist. The interference pattern of the collected light is determined through an ultra high resolution spectroscope and is analyzed with an image dissector.
Barrick, J. D. () “Gating Characteristics of Photomultiplier Tubes for Lidar Appli- cations”, NASA Tech. Memo, S. Barteneva, O. D. () “Scattering Functions of Light in the Boundary Layer of the. Until recently, only photomultiplier tubes were suitable for low-light imaging. However, this technology and associated poor spatial resolution were not suited to scientific applications. Solid-state devices such as image intensifiers or electron-bombarded devices brought solutions to some key applications but have shown limitations such as poor modulation transfer function, low quantum.
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NASA Technical Memorandum Gating Characteristics of Photomultiplier Tubes for Lidar Applications John D. Barrick AUGUST Get this from a library. Gating characteristics of photomultiplier tubes for lidar applications. [John D W Barrick; United States.
National Aeronautics and Space Administration. Scientific and Technical Information Branch.]. Gating characteristics of photomultiplier tubes for Lidar applications.
by using either the focusing electrode or dynodes as a gating mechanism. Characteristics used for detector evaluation. Gating characteristics of photomultiplier tubes for Lidar applications.
By J. Barrick. Abstract. A detector test facility was developed and applied in the evaluation and characterization of lidar detectors in support of the multipurpose airborne differential absorption lidar (DIAL) system based at the Langley Research Center (LaRC Author: J.
Barrick. with excellent time response for cosmic ray experiments, and ultra-fast tubes with a time jitter of less half a nanosecond. This book describes the operating principles of the photomultiplier tube and surveys its many diverse applications, such as medical imaging, nuclear and high-energy.
Photomultiplier tubes (photomultipliers or PMTs for short), members of the class of vacuum tubes, and more specifically vacuum phototubes, are extremely sensitive detectors of light in the ultraviolet, visible, and near-infrared ranges of the electromagnetic detectors multiply the current produced by incident light by as much as million times or 10 8 (i.e., dB), in.
The gating process turns off the PMT during the intense light pulse or source of SIN. To do this the individual characteristics of each lidar system must be studied. L.J. Mullen, Characterization of signal induced artifacts in photomultiplier tubes for under water LIDAR applications, in: SPIE Conference on Airborne and in Underwater.
This chapter details various characteristics of photomultiplier tubes, including basic and performance. For example, section shows spec-tral response characteristics of typical photocathodes and also gives the definition of photocathode sensitivity and its measurement proce-dure.
Section explains dynode types, structures and typical char. In this application, fast gating function is very effective to minimize the back ground noise. The tube is gated on only during the time when essence emissions arrive at the de-tector.
The switching ratio characteristics are also very important GATED MICROCHANNEL PLATE PHOTOMULTIPLIER TUBES (MCP-PMT) RU SERIES. Time characteristics The photomultiplier tube is a photodetector that has an exceptionally fast time response.1) 23)) The time response is determined primarily by the transit time required for the photoelectrons emitted from the photocathode to reach the anode after being multiplied as well as the transit time difference between each.
The photomultiplier tube signal is inherently negative so the lidar returns are negative going on the oscillogram rather than as drawn in Figure 1.
The lower trace, photographed on automatic sweep either before or after the lidar shot, is the differentiated gating pulse, and shows the position and duration of the photomultiplier gating pulse.
Barrick, John D. “Gating Characteristics of Photo- multiplier Tubes for LIDAR Applications.” NASA Technical MemorandumAug. Primary Examiner-David C. Nelms Assistant Examiner-Michael Messinger Attorney, Agent, or Firm-William H.
King ABSTRACT A technique for controlling the gain of a photomulti- plier tube (PMT) Silicon photomultiplier detector for atmospheric lidar applications Jordi Riu,1,* Michaël Sicard,2,3 Santiago Royo,1 and Adolfo Comerón2 1Center for Sensors, Instrumentation and Systems Development, Universitat Politècnica de Catalunya, Rambla Sant Nebr Terrassa, Spain 2Department of Signal Theory and Communications, Remote Sensing Laboratory, Universitat Politècnica de Catalunya.
the reader with comprehensive information on photomultiplier tubes. This handbook will help the user gain maximum performance from photomultiplier tubes and show how to properly operate them with higher reliability and stability. In particular, we believe that the first-time user will find this handbook beneficial as a guide to photomultiplier.
1. Introduction. Brillouin lidar, is a new and developing technique for the remote sensing of the ocean. It can be used for the real time measurements of sound speed in the water, temperature of the water, salinity of the sea water, and attenuation coefficient of theit can be used for detecting submerged present authors did a lot work, on the.
Photonis introduces a new high performance Micro-Channel Plate Photomultiplier Tube (MCP-PMT) optimized for LIDAR applications requiring fast timing and high dynamic range.
There is also a gating option available for applications where background light needs to be suppressed as much as possible.
A resistive bleeder chain is integrated in. PHOTOMULTIPLIER TUBES (MCP-PMTs) RU SERIES GENERAL CHARACTERISTICS PHOTOCATHODE SELECTION GUIDE MAXIMUM RATINGS (Absolute Maximum Values) ELECTRICAL CHATACTERISTICS (RU) at +25 °C E GATING CHARACTERISTICS Parameter Description / Value Spectral Response (nm) Range Peak Wavelength to to to.
A micro-channel plate (MCP) is a planar component used for detection of single particles (electrons, ions and neutrons) and low intensity impinging radiation (ultraviolet radiation and X-rays).It is closely related to an electron multiplier, as both intensify single particles or photons by the multiplication of electrons via secondary emission.
However, because a microchannel plate detector. - Discontinued - OPTION # GATED SOCKET ASSEMBLIES. Specifications; This option is integrated directly into Products for Research Photomultiplier Socket Assemblies, and allows the user to control the on/off state of the PMT via a TTL input.
The ability to gate a photomultiplier is critical in applications such as LIDAR, where the light level to be measured is significantly lower than the.
The viability and performance of using a silicon photomultiplier (SiPM) in atmospheric lidar applications is experimentally compared against the well-established use of photomultiplier tubes.
By using a modified lidar setup for simultaneous data acquisition of both types of sensors, we demonstrate that a SiPM can offer appropriate qualities for this specific application where the detection of. PHOTOMULTIPLIER TUBE (MCP-PMTs) RU SERIES.
FEATURES. High Speed Gating by Low Supply Voltage (+10V) Gate Rise Time: 1 ns. 1) Gate Width: 5 ns Fast Rise Time: ps Narrow TTS. 2): 90 ps. High Switching Ratio: 10 Figure 3: Typical Gate Bias Characteristics.New type of photomultiplier tubes (PMTs) have been developed for the applications to high energy physics experiments, medical instruments and biophysics experiments.
Remarkable features of these PMTs are fast time response and gating function, immunity to the magnetic field, position sensitivity, good pulse height resolution and so on.Photomultiplier selection criteria Points to consider in choosing a tube for a given application are photocathode characteristics, response speed, and number of stages.
Photocathode spectral sensitivity and size. If the light to be detected is monochromatic, choose a tube whose maximum sensitivity is as close as possible to the same wavelength.