| Code TESLA for Modeling and Design of High-Power High-Efficiency Klystrons |
Mar 2011 |
4 pages |
| Authors:
I A Chernyavskiy; S J Cooke; B Levush; A N Vlasov; Jr Antonsen T M; NAVAL RESEARCH LAB WASHINGTON DC
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 | This work gives an overview of the main features of the 2.5D large-signal code TESLA and its capabilities for the modelling single-beam and multiple-beam klystrons as high-power RF sources. These sources are widely used or proposed to be used in accelerators in the future. Comparison of TESLA modelling results with experimental data for a few multiple-beam klystrons are shown. |
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| Multiple Coulomb Ordered Strings of Ions in a Storage Ring |
24 JUN 2002 |
6 pages |
| Authors:
Rainer W. Hasse; GESELLSCHAFT FUER SCHWERIONENFORSCHUNG M B H DARMSTADT (GERMANY F R)
|
| We explain that the anomalous frequency shifts of very close masses measured in the high precision mass measurement experiments in the ESR storage ring result from the locking of Coulomb interacting strings of ions. Here two concentric strings which run horizontally close to each other for many revolutions are captured into a single string if their thermal clouds overlap. They give up their identity and lock into an average frequency. ... |
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| Crystalline Ion Beams in the RF Quadrupole Storage Ring PALLAS |
24 JUN 2002 |
10 pages |
| Authors:
U. Schramm; T. Schaetz; D. Habs; LUDWIG-MAXIMILIANS UNIV MUNICH (GERMANY) SEKTION PHYSIK
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| We report on the crystallization of laser cooled Mg(+) ion beams circulating in the table-top rf quadrupole storage ring PALLAS at a velocity of 2800 m/s (beam energy 1 eV). A sudden collapse of the transverse beam size and the low velocity spread clearly indicate the phase transition to a one-dimensional linear string of ions. This crystalline beam shows exceptional stability, surviving for more than 3000 revolutions without cooling. Close ... |
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| Resistive Wall Klystron Amplifier Having Grounded Drift Tube |
30 JUN 1998 |
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| Authors:
Han S. Uhm; DEPARTMENT OF THE NAVY WASHINGTON DC
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 | Nonlinear current modulation of a relativistic electron beam is achieved by its propagation without interruption through a resistive wall type of drift tube assembly within a klystron amplifier. Maximized beam current modulation is thereby attained for a beam propagation distance within a shortened drift tube. |
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| Resistive Wall Klystron Amplifier. |
03 DEC 1996 |
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| Authors:
Han S. Uhm; DEPARTMENT OF THE NAVY WASHINGTON DC
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| Nonlinear current modulation of a relativistic electron beam is achieved by its propagation without interruption through a resistive wall type of drift tube assembly within a Klystron amplifier. Maximized beam current modulation is thereby attained for a beam propagation distance within a shortened drift tube. |
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| Interaction Region Analysis for A High-Field Hadron Collider |
1996 |
6 pages |
| Authors:
Jie Wei; Stephen G. Peggs; Glen P. Goderre; BROOKHAVEN NATIONAL LAB UPTON NY
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| The primary goal of the interaction region (IR) is to demagnify the transverse beam dimension to a small spot size at the interaction point (IP) to reach the required luminosity. With an experimental drift space of +/-25 m and a quadrupole focusing strength of 360 T/m at the triplets, a beta* of 0.1 m can be achieved at a beam energy of 50 TeV. Only two families of ... |
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| Plasma Klystron Amplifier. |
31 JAN 1995 |
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| Authors:
Han S. Uhm; DEPARTMENT OF THE NAVY WASHINGTON DC
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| A body of dense plasma is established within a short drift tube of a klystron amplifier between input and output resonator cavities thereof to support current modulation of microwave energy by interaction with an electron beam propagated through the drift tube. The plasma is confined to a column radially spaced from the electron beam for two-stream interaction enabling enhancement of current modulation under simultaneous high-power and high frequency operation. (KAR) ... |
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| Accelerator Technology Division: Annual Report FY 1990 |
01 MAY 91 |
135 pages |
| Authors:
Stanley O. Schriber; Robert A. Hardekopf; LOS ALAMOS NATIONAL LAB NM
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| The Accelerator Technology (AT) Division continued in fiscal year 1990 to fulfill its mission of developing accelerator science and technology for application to research, defense, energy, and other problems of national interest. Highlights for the year included (1) Successful operation of the first cryogenically cooled radiofrequency quadrupole (RFQ). The RFQ accelerated a beam of negative hydrogen ions to the design energy of 2.5 MeV with high transmission and beam quality. ... |
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| High Power Klystron Amplifier. |
16 JAN 1991 |
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| Authors:
M. Friedman; Y. Y. Lau; J. Krall; V. Serlin; DEPARTMENT OF THE NAVY WASHINGTON DC
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| A klystron amplifier in which the drift tube is in the form of a casing and a central member disposed coaxially about the same centerline to form a coaxial space between the central member and the casing which runs parallel to the centerline, and through which the klystron's electron beam flows. The casing and central member are maintained at ground potential, which maintains the space charge of the electron beam ... |
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| Simulation Studies of a Klystronlike Amplifier Operating in the 10-100 GW Regime |
20 NOV 90 |
29 pages |
| Authors:
J. Krall; M. Friedman; Y. Y. Lau; V. Serlin; NAVAL RESEARCH LAB WASHINGTON DC
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| A coaxial drift tube allows propagation of an ultra high power relativistic electron beam (500 keV, > or = 100 kA, 100 ns). This paper covers the modulation of a large diameter (12.6 cm) intense relativistic electron beam (500 keV, 16 ka) by an external microwave source via particle simulation. The annular beam, enclosed within a coaxial drift tube, is found to be fully modulated by a low-power external rf ... |
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| Research on Advanced Sources and Applications |
03 AUG 90 |
18 pages |
| Authors:
John M. Madey; Rodney I. McCormick; DUKE UNIV DURHAM NC DEPT OF PHYSICS
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| Progress is summarized on the mechanical and shielding systems for a 1 GeV Linac and Storage Ring to drive an UV/XUV Free Electron Laser. Progress is summarized on injector redesign and undulator design. Training and coupling activities are summarized. Keywords: Undulator design, Electron storage ring, Free electron laser. (JHD) |
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| Diagnostics for Hydrogen Atoms and Molecules in H-Atom Sources and Beams Using VUV Laser Light |
24 APR 90 |
27 pages |
| Authors:
Erhard Rothe; WAYNE STATE UNIV DETROIT MI
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| An H(-) ion source for high brightness H atoms beams should have the lowest possible internal temperature T, because the beam-power density at a distance scales as 1/T. We determine local Temperature inside a discharge with the use of a tunable ArF excimer laser that measures the populations of the lowest four rotational states of H2 by means of (2+1) resonance enhanced multiphoton ionization (REMPI). The number of laser-created ions ... |
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| A Cryocooler for High Acceleration Applications |
04 JAN 90 |
3 pages |
| Authors:
Michael J. Nilles; ALABAMA CRYOGENIC ENGINEERING HUNTSVILLE
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| Formation and Stability of Partially-Neutralized Plasma Clumps |
AUG 89 |
52 pages |
| Authors:
John Guillory; Ren L. Yao; Charles D. Striffler; Martin Reiser; MARYLAND UNIV COLLEGE PARK LAB FOR PLASMA RESEARCH
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| In experiments in which an intense relativistic electron beam is injected into an evacuated drift tube with a localized gas cloud located near the anode, ions with energies several times the electron beam energy have been observed. These experiments have been simulated using a particle-in-cell code which realistically models ionization of the gas. It was found that when the injected electron beam current exceeds the space-charge limiting current, ions are ... |
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| Field Adjustable Transverse Flux Sources. |
27 APR 1989 |
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| Authors:
Herbert A. Leupold; DEPARTMENT OF THE ARMY WASHINGTON DC
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| This patent application discloses a permanent magnet structure comprising multiple hollow substantially cylindrical flux sources embedded one within another about an axially extending center passage such that each flux source is free to rotate in either direction by any desired angular magnitude independent of the motion of the others (s). In the case of a plurality of axially aligned truncated HCFS structures, the array may be arranged to provide a ... |
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| Los Alamos National Laboratory's Antiproton Research |
14 APR 89 |
11 pages |
| Authors:
N. S. King; LOS ALAMOS NATIONAL LAB NM
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| This is the report on the status of the experiment to measure the gravitational mass of an antiproton in a vertical drift tube. The capability must be developed to capture, cool, and store millions of antiprotons produced at the target of the large accelerator at CERN. Of interest are the ion traps needed to do this. (These traps can be used as an intermediate step in the production of antihydrogen ... |
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| Superconducting Shielded PYX PPM Stacks. |
07 APR 1989 |
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| Authors:
Herbert A. Leupold; DEPARTMENT OF THE ARMY WASHINGTON DC
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| Periodic permanent magnet structures comprise a plurality of paired axially aligned segments of transversely sliced or truncated hollow cylindrical flux sources each of which produces a uniform high-field in its central cavity. Each pair of segments is mounted on opposite sides of a respective plate of permeable material. The magnetic field orientations in the central cavities are axially directed and alternate or reverse in direction from segment to segment. An ... |
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| Rotational Temperature Dependences of Gas Phase Ion-Molecule Reactions |
23 NOV 1988 |
6 pages |
| Authors:
A. A. Viggiano; Robert A. Morris; John F. Paulson; AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA
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| A technique for measuring the rotational temperature dependences of the rate constants at several temperatures in a variable temperature selected ion flow drift tube. For a monatomic ion, comparing the rate constants at the same center of mass kinetic energy at different temperatures yields the dependence of the rate constant on the internal temperature of the reactant neutral. For neutrals in which the vibrational modes are inactive at the temperatures ... |
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| Design of a High Voltage Multi-Cavity 35 GHz Phase-Locked Gyrotron Oscillator |
01 NOV 88 |
55 pages |
| Authors:
NAVAL RESEARCH LAB WASHINGTON DC
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| This paper describes the design for an experimental high power, phase locked gyrotron oscillator. The electron beam is generated by a 1 MV pulseline accelerator, and the reference signal is provided by a 35 GHz, 20 kW magnetron. The expected output power is in the range of 1 to 10 MW. The design is based on a solid 1 MeV, 100 Amp, 4 mm electron beam with a momentum pitch ... |
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| Ion and Electron Interactions at Thermal and Suprathermal Energies |
30 SEP 88 |
74 pages |
| Authors:
David Smith; Nigel G. Adams; Charles R. Herd; BIRMINGHAM UNIV (ENGLAND) DEPT OF SPACE RESEARCH
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| The flowing afterglow/Langmuir probe (FALP) and the selected ion flow drift tube (SIFDT) apparatuses have been used to study (i) dissociative electron attachment reactions of several organo-halogen molecules, including the unstable radical species CCl3 and CCl2Br (ii) dissociative recombination reactions of several polyatomic positive ions, and preliminary data on the neutral products of several such reactions are reported (iii) the proton affinities of several molecular species and the collisional breakup ... |
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| Proceedings of the Antiproton Science and Technology Workshop Held in Santa Monica, California on 6-9 October 1987 |
JUL 88 |
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| Authors:
B. W. Augenstein; F. E. Mills; B. E. Bonner; M. M. Nieto; RAND CORP SANTA MONICA CA
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| Partial of Contents of Symposia: A Storage Ring for Antimatter Transport; An Advanced Hadron Facility: Prospects and Applicability to Antiproton Production; The TRIUMF Kaon Facility; Scaleup of Antiproton Production and Collection; Portable Pbars, Traps that Travel; Extreme States of Matter: Could Antiprotons be used to Power Table-top Equation of state or Opacity Experiments?; Antimatter Spacecraft Propulsion Experiments with Current Antiproton Production Rates; Energy Transfer in Antiproton Annihilation Rockets; Some Thoughts ... |
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| Plasmoid Propagation |
12 FEB 88 |
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| Authors:
Gerald F. Kiuttu; Richard J. Adler; Robert J. Richter-Sand; Michael K. Williams; MISSION RESEARCH CORP ALBUQUERQUE NM
|
| Simple analytical considerations suggest that for certain parameter regimes for costreaming ion and electron beams, radial equilibrium can be expected without charge or current neutrality. To investigate these predictions experimentally, a pulsed power system comprising separate anode and cathode pulsers was designed and assembled. A double diode was developed to produce the plasmoids, and its steady-state space charge limited current researched over modest distances in terms of net current transport, ... |
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| Ion and Electron Interactions of Atmospheric Importance |
31 DEC 87 |
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| Authors:
David Smith; Nigel G. Adams; BIRMINGHAM UNIV (ENGLAND) DEPT OF SPACE RESEARCH
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| The variable-temperature flowing afterglow/Langmuir probe (VT-FALP) and the variable-temperature selected ion flow drift tube (VT-SIFDT) apparatuses have been exploited to study (i) dissociative electron attachment to HBr and HI and reverse processes of associative detachment of Br- and I- with H atoms (ii) secondary dissociative electron attachment reactions of the radicals CCl3 and CCl2Br formed in the primary dissociative electron attachment reactions of CCl4 and CCl3Br(iii) dissociative recombination reactions of ... |
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| Gas Delivery System and Beamline Studies for the Test Beam Facility of the Collider Detector at Fermilab |
DEC 87 |
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| Authors:
Henry G. Franke III; ARMY MILITARY PERSONNEL CENTER ALEXANDRIA VA
|
| A fixed-target test beam facility has been designed and constructed at the Meson Test (MT) site to support studies of components of the Collider Detector at Fermi National Accelerator Laboratory (CDF) the design and construction of the test beam facility gas delivery system is described with the initial studies to document the ability of the MT beamline to meet the needs of the collider detector facility. Analysis of the preliminary ... |
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| Collective Interaction Klystron. |
14 OCT 1986 |
|
| Authors:
Yue-Ying Lau; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| This patent discloses a collective interactive klystron that utilizes a bent drift tube to achieve circular motions of the electrons in the drift region. This bent drift tube eliminates material repulsion between AC space in a klystron. |
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| Atomic Collisions and Plasma Physics |
31 AUG 86 |
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| Authors:
Manfred A. Biondi; Rainer Johnsen; PITTSBURGH UNIV PA DEPT OF PHYSICS AND ASTRONOMY
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| Experimental studies have been carried out of ion molecule reactions and of electron ion recombination of interest for modelling the normal and disturbed regions of the earth's upper atmosphere. Drift tube and microwave afterglow techniques were employed for these studies. Rates have been determined for the oxidation reactions of zirconium ions, and theoretical models for the temperature dependence of three body diatomic ion/diatomic gas have been developed. The electron temperature ... |
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| Optics for Insertion-Device Beam Lines, |
OCT 1985 |
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| Authors:
Victor Rehn; NAVAL WEAPONS CENTER CHINA LAKE CA
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| This paper presents an overview of optical, thermal, and mechanical problems encountered with optical elements in beams of synchrotron radiation (SR) emitted by electron sidewinders such as wigglers, undulators, and free electron lasers (FELs). Perhaps the most challenging problem is the management of the high power densities from wigglers without degradation of the optical quality of the beam. Another challenging problem is the reduction of near specular scattering by surface ... |
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| The SSRL (Stanford Synchrotron Radiation Laboratory) Insertion Device Beam Line 'Wunder,' |
OCT 1985 |
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| Authors:
XEROX PALO ALTO RESEARCH CENTER CA
|
| Insertion devices as radiation sources on storage rings offer potential for substantial gains in beam brightness and flux delivered to a sample. Achieving these gains, however, requires several new aspects of beam line design. New aspects of beam line design arise from the high beam power, the complex spectral and geometrical characteristics, and the need for a wide spectral range. We discuss these aspects of insertion device soft X-ray synchrotron ... |
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| Predicting Thermal Distortion of Synchrotron Radiation Mirrors with Finite Element Analysis, |
OCT 1985 |
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| Authors:
Richard Di-Gennaro; William R. Edwards; Egon Hoyer; CALIFORNIA UNIV BERKELEY LAWRENCE BERKELEY LAB
|
| High power and high power densities due to absorbed radiation are significant design considerations which can limit performance of mirrors receiving highly collimated synchrotron radiation from insertion devices and bending magnet sources. Although the grazing incidence angles needed for x ray optics spread the thermal load, localized, nonuniform heating can cause distortions which exceed allowable surface figure errors and limit focusing resolution. This paper discusses the suitability of numerical approximations ... |
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| Finite Element Analysis of the Distortion of a Crystal Monochromater from Synchrotron Radiation Thermal Loading, |
OCT 1985 |
|
| Authors:
W. R. Edwards; E. H. Hoyer; A. C. Thompson; CALIFORNIA UNIV BERKELEY LAWRENCE BERKELEY LAB
|
| The first crystal of the Brown-Hower x ray monochromator of the LBL-EXXON 54 pole wiggler beamline at Stanford Synchrotron Radiation Laboratory (SSRL) is subjected to intense synchrotron radiation. To provide an accurate thermal/structural analysis of the existing monochromator design, a finite element analysis (FEA) was performed. A very high and extremely localized heat flux is incident on the Si (220) crystal. The crystal, which possesses pronouncedly temperature dependent orthotropic properties, ... |
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| Surface Heating in a Lacquer-Coated Mirror Irradiated with Undulator Light, |
OCT 1985 |
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| Authors:
R. Tatchyn; P. L. Csonka; E. Kaellne; A. Toor; C. Gillespie; STANFORD UNIV CA STANFORD SYNCHROTRON RADIATION LAB
|
| An ellipsoidal copper mirror has been diamond turned to provide strong demagnification of synchrotron light. Its surface curvature varies too rapidly over its extend for conventional polishing techniques to be applicable. Surface smoothing has been attempted in this case by applying lacquer to the surface and then metallizing it for operation in the soft x ray range. This paper describes the results obtained with this mirror in focussing 1 keV ... |
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| Insertion Devices, Future Developments, Limitations. |
OCT 1985 |
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| Authors:
Paul L. Csonka; ORGEON UNIV EUGENE INST OF THEORETICAL SCIENCE
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| The first generation of insertion devices having reached maturity (or almost), it is appropriate to survey directions along which new developments are expected. These include: Beam cooling with undulators, elementary particle physics with wigglers and undulators, microwigglers, dynamic (i.e. electromagnetic) insertion devices, bunched electron beam wigglers, time compression of photon pulses, the confinement and compression of radiation, optimized insertion devices, damage resistant optics, photon bunch contouring, and the rebunching of ... |
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| Experimental Results of Microwave Undulator, |
OCT 1985 |
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| Authors:
Tsumoru Shintake; NATIONAL LAB FOR HIGH ENERGY PHYSICS OHO (JAPAN)
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| Experimental study of a microwave undulator which uses the transverse field of microwave has been performed successfully at the Photon Factory electron linac. When the S band microwave power of 300 kW was fed into the undulator cavity, the equivalent magnetic field of 0.45 kG has been obtained. The undulator radiation in the visible region was observed and its spectrum was measured. |
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| Variational Theory of Insertion Devices, |
OCT 1985 |
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| Authors:
Roman Tatchyn; STANFORD UNIV CA STANFORD SYNCHROTRON RADIATION LAB*
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| A variational approach to isolating optimum particle trajectories in insertion devices is presented in this paper. The method is based on assigning performance functions to insertion devices which are functionals of the particle trajectory, and then extremizing the performance functions by varying the particle trajectory. A concrete example of general interest is solved, and an outline of extending the method to general cases is given. |
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| The Evolution of the Radiation-Beam System in Long Undulators, |
OCT 1985 |
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| Authors:
Kwang-Je Kim; STANFORD UNIV CA STANFORD SYNCHROTRON RADIATION LAB
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| The process by which the radiation intensity grows and correlation in the electron distribution develops, as the beam passes through a long undulator, its described. |
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| Free Electron Laser Device for Scanning a Spatial Field. |
24 SEP 1985 |
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| Authors:
William J. Condell Jr; DEPARTMENT OF THE NAVY WASHINGTON DC
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| The improved free electron laser device for scanning a spatial field is generally comprised of a drift tube and a rotatable mandrel. The mandrel is concentrically disposed in the tube so as to define an annular space there-between. A series of canted mirrors of grooved-like configuration are formed about the mandrel in predetermined spaced relationship to each other and at a predetermined angle to a plane transverse of the mandrel. ... |
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| Air Chemistry Measurements II |
MAY 85 |
66 pages |
| Authors:
D. K. Davies; P. J. Chantry; DIKEWOOD ALBUQUERQUE NM
|
| This report describes a comprehensive set of measurements of electron, negative-ion, and positive-ion mobilities together with attachment and ionization rate coefficients for dry air and mixtures of dry air with water vapor. These measurements were made for values of E/N (the ratio of electric field to gas density) ranging from about 10 to the -22nd power Vm2 to about 3x10 to the -19th power Vm2. This range of E/N corresponds ... |
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| The Transverse Oscillation of Coaxial Multiple Beams Propagating Along aMagnetic Field in a Vacuum Tube |
01 AUG 84 |
37 pages |
| Authors:
H. C. Chen; NAVAL SURFACE WEAPONS CENTER WHITE OAK LAB SILVER SPRING MD
|
| A fluid-Maxwell theory has been derived to study a system of multi- beams propagating parallel to an applied axial magnetic field in an evacuated conducting drift tube. The stability analysis is performed for a rigid-rotor and cold laminar flow equilibria. It is assumed that the particle beams are tenuous and the guiding field is very strong. As a result, the perturbation theory is derived under the ... |
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| Investigation of Ion Beam Production and Acceleration Using Linear Electron Beams and a Pulse Powered Plasma Focus |
MAR 1984 |
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| Authors:
MARYLAND UNIV COLLEGE PARK DEPT OF ELECTRICAL ENGINEERING
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| An intense relativistic electron beam cannot propagate in a metal drift tube when the current exceeds the space charge limit. Very high charge density and electric field gradients (100 to 1000 MV/m) develop at the beam front and the electrons are reflected. When a neutral gas or a plasma is present, collective acceleration of positive ions occur, and the resulting charge neutralization enables the beam to propagate. Experimental results, theoretical ... |
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| Free Electron Laser Employing an Expanded Hollow Intense Electron Beam and Periodic Radial Magnetic Field. |
25 MAY 1982 |
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| Authors:
S. Perry Schlesinger; Thomas C. Marshall; David B. McDermott; Victor L. Granatstein; Robert K. Parker; DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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| The generation of very high power pulses of coherent electromagnetic radiation that are continuously tunable in frequency is accomplished by means of a free electron laser in which a hollow relativistic electron beam is projected along the longitudinal axis of an evacuated drift tube. A first magnetic field expands the electron beam into an annular peripheral interaction region of the drift tube where the beam interacts with a second periodic ... |
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| Proceedings of the International Betatron Symposium (5th) (Selected Articles), |
24 APR 1981 |
38 pages |
| Authors:
v. a. moskalev; Yu A. Gromov; A. V. Tsimbalist; V. G. Shestakov; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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| A Method of Calculating the Biological Shield of Linear Proton Accelerators with Strong Focusing, |
30-Jan-1981 |
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| Authors:
V N Lebedev; V V Mal'kov; B S Sychev; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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| Transactions of the Scientific-Research Institute of Nuclear Physics, Electronics, and Automation (Selected Articles). |
28 JAN 1980 |
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| Authors:
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
|
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| Vacuum Ultraviolet (VUV) and Soft X-Ray Mirrors for Synchrotron Radiation, |
12 DEC 1977 |
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| Authors:
Victor Rehn; Vernon O. Jones; NAVAL WEAPONS CENTER CHINA LAKE CA
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| Final Report to Office of Naval Research Contract N00014-75-C-0786. |
JAN 1977 |
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| Authors:
STANFORD UNIV CALIF HIGH ENERGY PHYSICS LAB
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| The work on superconducting cavity development under contract to the Office of Naval Research has provided those working in this field at HEPL with an exciting and productive time, and this work has contributed immeasurably to the superconducting accelerator project at HEPL. The pioneering superconducting cavity development effort at HEPL with its excellent results encouraged other groups in the United States and in other countries (West Germany, Japan, Great Britain ... |
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| Question of Ion Acceleration by the Electron Ring in a Decreasing Magnetic Field, |
22 SEP 1972 |
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| Authors:
i. n. ivanov; E. A. Perelshtein; V. P. Sarantsev; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
|
| The problem of keeping the ions in the potential well of the electron ring when accelerating it in the decreasing magnetic field in considered. (Author) |
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| Silund Nanosecond High-Current Linear Induction Accelerator, |
13 JUL 1972 |
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| Authors:
V. Gitt; A. Kovalenko; P. Ryltsev; V. Sarantsev; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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| The experimental data on constructing the high current induction linear accelerator of the nanosecond range, meant to be used as injector in the collective ion accelerator, are presented. The problems are considered which are connected with the formation of powerful current pulses and voltage with the creation of the accelerating system on ferrite rings, as well as with the focusing and transportation of the electron beam. (Author) |
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| One-Day Meeting on Stabilizing Superconductors - Modern Methods and Present Problems. |
01 OCT 1971 |
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| Authors:
Robert A. Hein; OFFICE OF NAVAL RESEARCH LONDON (ENGLAND)
|
| The report concerns a one-day meeting on stabilizing superconductors held at the Rutherford High Energy Laboratory, Rutherford, Berkshire, England, on 23 April 1971. A number of tutorial papers were presented on principles and practice of cryogenic, adiabatic and dynamic stabilization of superconducting wire and cables. (Author) |
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| Electron Accelerators (Selected Articles), |
28 SEP 1971 |
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| Authors:
V. I. Perevodchikov; A. N. Pokras; a. a. vorobev; M. Yu. Geltsel; A. I. Bessonov; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
|
| ;Contents: An electron gun with a 40 - 50 a current for a pulsed linear accelerator; Development of cyclic waveguide accelerators at the Tomsk Polytechnic Institute; High voltage artificial shaping lines for modulators of linear accelerators; A nanosecond pulse generator for a synchrotron inflector; A laboratory facility for the radiation synthesis of graft materials using an electron accelerator. |
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| A New Method of Accelerating Nuclear Particles, |
20 JUL 1971 |
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| Authors:
Vladistav Pavlovich Sarantsev; ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER CHARLOTTESVILLE VA
|
| A new principle of accelerating charged particles was proposed by V. I. Vekslu in 1956. This principle employs collective interactions and coherent effect (wherein instead of individual particles there is a packet of particles interacting as an integral whole; in this connection the field strength increase in proportion to the number of particles). During the last few years V. P. Sarantsev has been directing work on creating a reactor based ... |
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