2,460 resources related to Mesons
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All areas of ionizing radiation detection - detectors, signal processing, analysis of results, PET development, PET results, medical imaging using ionizing radiation
The 15th IEEE International Conference on Control and Automation (IEEE ICCA 2019) will be held Tuesday through Friday, July 16-19, 2019, in Edinburgh, Scotland. The conference is jointly organized by IEEE Control Systems Chapter, Singapore, and IEEE Control Chapter for United Kingdom and Ireland. It is technically sponsored by IEEE Control Systems Society. It aims to create a forum for scientists and practising engineers throughout the world to present the latest research findings and ideas in the areas of control and automation, and possible contributions toward sustainable development and environment preservation. The conference is featured with the Best Paper Award and the Best Student Paper Award.
The 21th edition of the ICEAA is coupled to the 9th edition of the IEEE-APWC. The two conferences consist of invited and contributed papers, and share a commonorganization, registration fee, submission site, workshops and short courses, and social events.The proceedings of both conferences will be published on IEEE Xplore
Particle accelerator science and technology
Real time computing applications involving both hardware and software development in nuclear, particle, plasma and other related fields.
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
The theory, design and application of Control Systems. It shall encompass components, and the integration of these components, as are necessary for the construction of such systems. The word `systems' as used herein shall be interpreted to include physical, biological, organizational and other entities and combinations thereof, which can be represented through a mathematical symbolism. The Field of Interest: shall ...
Computer, the flagship publication of the IEEE Computer Society, publishes peer-reviewed technical content that covers all aspects of computer science, computer engineering, technology, and applications. Computer is a resource that practitioners, researchers, and managers can rely on to provide timely information about current research developments, trends, best practices, and changes in the profession.
Physics, medicine, astronomy—these and other hard sciences share a common need for efficient algorithms, system software, and computer architecture to address large computational problems. And yet, useful advances in computational techniques that could benefit many researchers are rarely shared. To meet that need, Computing in Science & Engineering (CiSE) presents scientific and computational contributions in a clear and accessible format. ...
Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.
1990 IEEE Nuclear Science Symposium Conference Record, 1990
Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366), 1999
Using muons in high energy colliders has an advantage in that the muons emit negligible synchrotron radiation, but has the disadvantage that the lifetime of the muons is very short. The latter requires that the muons be accelerated as rapidly as possible to prevent particle loss. The former allows one to loop back and pass through the same linac multiple ...
IEEE Transactions on Nuclear Science, 1983
The setting-up and optimization of antiprotons injected into the Antiproton Accumulator was initially based upon the measurement of circulating antiprotons by integration of their Schottky signals. This has now been supplemented by amplitude distribution measurements using an internal target. Also, the more readily detectable pions, muons and electrons, injected along with the antiprotons, give information on machine aperture and orbits, ...
IEEE Transactions on Nuclear Science, 1969
The operation of an accelerator requires that signals from various points about the machine be available for viewing in the control room. For the linear accelerator in the Los Alamos Meson Physics Facility (IAMPF), the cable-runs over which these signals must travel are up to 3000 ft in length. Consequently, a transmission system had to be developed which had a ...
IEEE Transactions on Nuclear Science, 1979
A data encoding system that rapidly generates the binary address of an active wire in a 512-wire multiwire proportional chamber has been developed. It can accept a second event on a different wire after a deadtime of 130 ns. The system incorporates preprocessing of the wire data to reject events that would require more than one wire address. It also ...
Using muons in high energy colliders has an advantage in that the muons emit negligible synchrotron radiation, but has the disadvantage that the lifetime of the muons is very short. The latter requires that the muons be accelerated as rapidly as possible to prevent particle loss. The former allows one to loop back and pass through the same linac multiple times, thereby achieving potentially significant cost advantages. Some of the acceleration systems will use recirculating linacs to achieve the reuse of the accelerating structures. However, the large longitudinal beam emittances make it difficult to simultaneously achieve large gradients by using high frequency RF and design an arc with a sufficient energy acceptance. The current state of the design for the acceleration stages for a muon collider is presented, with emphasis on systems accelerating to 70 GeV per beam. Known difficulties will be described as will their possible solutions. In particular, the use of an FFAG-like lattice for the arcs of a recirculating linac is described which accepts a beam with a very large energy spread over a wide range of energies, allowing a single are to be used instead of multiple arcs.
The setting-up and optimization of antiprotons injected into the Antiproton Accumulator was initially based upon the measurement of circulating antiprotons by integration of their Schottky signals. This has now been supplemented by amplitude distribution measurements using an internal target. Also, the more readily detectable pions, muons and electrons, injected along with the antiprotons, give information on machine aperture and orbits, which can serve as a monitor of injection conditions during antiproton stacking.
The operation of an accelerator requires that signals from various points about the machine be available for viewing in the control room. For the linear accelerator in the Los Alamos Meson Physics Facility (IAMPF), the cable-runs over which these signals must travel are up to 3000 ft in length. Consequently, a transmission system had to be developed which had a 10% to 90% rise time of 80 ns, an overshoot of ≤ 0.5 dB, and a droop of < 0.5% for a 1-ms pulse. The necessary-pre-emphasis filter for each cable run was designed by a computer program. This paper describes the system configuration, which provides for computer-controlled switching of 320 of the 660 signals and then outlines the computational procedure used in the filter design.
A data encoding system that rapidly generates the binary address of an active wire in a 512-wire multiwire proportional chamber has been developed. It can accept a second event on a different wire after a deadtime of 130 ns. The system incorporates preprocessing of the wire data to reject events that would require more than one wire address. It also includes a first-in, first-out memory to buffer the data flow.
An FPGA based trigger system for an imaging particle detector has been designed and produced. The main capabilities of the system are the recognition of the track pattern of the incoming particles, the calculation of its stopping pixel and the time discrimination of events. The description of the implemented algorithms, the FPGA architecture, the developed hardware and the main operation results are included in this paper. The trigger system has already been installed in the FAST detector and operated during the 2005 data taking period with very satisfactory performance. Therefore, this trigger system will be used in the detector for further operation in the incoming years
A particle separator utilizing a magnetic field crossed with an rf electric field has been built and incorporated into the M9 secondary channel to produce a clean negative muon beam at 77 MeV/c ± 5%. The separator is driven at the main cyclotron frequency (23 MHz) and phase locked to the primary proton beam. Separation is achieved by using both the temporal and velocity differences between the muons, produced near the production target (cloud muons), and both the pion and electron contaminants in the beam.
For the first time the two-photon effect achieved with light from a laser has been used to cause a specific chemical reaction. At the Bell Telephone Laboratories, Y.H. Pao and P.M. Rentzepis irradiated a sample of distilled styrene monomer with light from a pulsed ruby laser and found that they had created polystyrene. The simultaneous In the experiments, freshly distilled styrene monomer was subjected to a succession of some 20 laser pulses. The sample was kept at liquid nitrogen temperature to stabilize free radicals released during the two-photon process. Following the irradiation, the sample was warmed to room temperature and the polymer was precipitated. An infrared spectrum analysis showed that Yo-Han Pao (left) and Peter Rentzepis of Bell Labs are shown irradiating a sample of distilled monomer styrene (in the flask) with light from a pulsed ruby laser (not shown). Simultaneous absorption of two photons by the monomer causes polymerization. absorption of two photons by the monomer molecule was found to have caused this polymerization. The success of these experiments may open a potentially vast area of molecular phenomena to exploration with the laser's highly intense and monochromatic beam of light. Pao and Rentzepis believe they have demonstrated a general phenomenon and believe that many other multiphoton photochemical reactions may be induced and studied. the precipitate was identical to that of the known polymer. Monochromatic light from a ruby laser occurs at a wavelength of 6940 A. Photons at this wavelength have an energy equivalent of 1.8 eV. Styrene monomer, however, cannot absorb such light, and-even if it could-this energy would not be sufficient to induce a chemical reaction. However, in the interaction of the intense laser beam with the molecular system, there is a process by which two photons are absorbed almost simultaneously to excite the monomer by 3.6 eV. This, in turn, causes the formation of free radicals and induces polymerization.
The entire electronic trigger system for a large experiment has been designed and constructed specifically for that experiment. The only commercial logic used was for monitoring, primarily scalers. This was not entirely by choice. The needed logic functions were not available, and the number of discriminator, delay, and latch channels required made using standard NIM logic modules an unpleasant solution. As built, the entire system, including power supplies, a NIM bin and a CAMAC crate for monitoring and control, fits easily in 3 relay racks. These racks are located in the experimental hall, near the experiment, and are accessible only via CAMAC when the beam is on. All functions of the system are programmed with special CAMAC modules.
The CMS Hadronic Endcap (HE) and Hadronic Forward (HF) calorimeters cover the pseudorapidity range of from 1.4 to 5 on both sides of the CMS detector, contributing to superior jet and missing transverse energy resolutions. Here we discuss possible upgrade scenarios for both calorimeters. Recent studies revealed abnormally high amplitude signals due to punch through charged particles, mostly muons, producing Cherenkov photons at the HF calorimeter PMT window. Our studies show that these events can be eliminated either by using the timing properties, or replacing the HF PMTs with new generation four anode PMTs. As the integrated luminosity of the LHC increases, the scintillator tiles used in the CMS Hadronic Endcap calorimeter will lose their efficiency. This report outlines two possible radiation hard upgrade scenarios based on replacing the HE scintillators with quartz plates.
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