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Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)

16-16 May 1997

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  • Proceedings of the 1997 Particle Accelerator Conference [front matter]

    Publication Year: 1997, Page(s):i - xviii
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    Freely Available from IEEE
  • Tutorial on superconducting accelerator magnets

    Publication Year: 1997, Page(s):3404 - 3406 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (459 KB)

    A multimedia CD-ROM tutorial on the physics and engineering concepts of superconducting magnets for particle accelerators is being developed under a U.S. Dept. of Energy SBIR grant. The tutorial, scheduled for distribution this year, is intended for undergraduate junior or senior level science students, and portions will also be useful as resources for high school science classes. However, the uni... View full abstract»

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  • Author index

    Publication Year: 1997, Page(s):3897 - 3917
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    Freely Available from IEEE
  • Calibration system for SLC 476 MHz to 2856 MHz multipliers

    Publication Year: 1997, Page(s):3024 - 3026 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    The two mile long Main Drive Line (MDL) distributes 476 MHz at each of the 31 sectors along its length. Each of the 31 sectors has a six times multiplier which drives the 2856 MHz phase reference system for that sector. This system is used to set and maintain phase of the accelerator structures over time. During previous runs significant down time resulted from sector phasing which was required af... View full abstract»

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  • The Accelerator Production of Tritium project

    Publication Year: 1997, Page(s):3780 - 3784 vol.3
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    Tritium is essential for U.S. nuclear weapons to function, but because it is radioactive with a half-life of 12.3 years, the supply must be periodically replenished. Since the last production reactor stopped operating in 1988, tritium has been recovered from dismantled nuclear weapons. This process is possible only as long as many weapons are being retired and will not work indefinitely, thus requ... View full abstract»

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  • Ion microwave source for linear accelerator

    Publication Year: 1997, Page(s):2773 - 2774 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    In this report, a microwave source with improved characteristics for a linear accelerator is described. It is known that ion microwave sources have several advantages in comparison with other types of sources, working in continuous mode-first of all, large full operation time, absence of incandescent elements with short life time and high stability of the characteristics View full abstract»

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  • Development of an in-vacuum minipole undulator

    Publication Year: 1997, Page(s):3515 - 3517 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    An in-vacuum minipole insertion device is currently being developed in collaboration between and the National Synchrotron Light Source (NSLS). The magnetic array is constructed by SPring-8 and it will be installed in a chamber with mechanical parts in the X-ray ring (E=2.584 GeV) at the NSLS. The device is made of permanent magnets with 31 periods and the length of the period is 11 mm. It is to pr... View full abstract»

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  • HOM absorber for the ARES cavity

    Publication Year: 1997, Page(s):2986 - 2988 vol.3
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    Two types of sintered SiC (silicon carbide) ceramics have been developed and applied as the HOM absorbers for the second prototype ARES cavity (ARES96). One is bullet-shape SiC ceramics and the other is a tile one. The prototype cavity equipped with these absorbers was successfully tested with an electron beam in the TRISTAN accumulation ring. High power tests of these absorbers were carried out u... View full abstract»

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  • SLC interferometer system and phase distribution upgrades

    Publication Year: 1997, Page(s):3021 - 3023 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    Many of the components used in the Stanford Linear Collider (SLC) phasing system date back 30 years to the construction of SLAC. At the start of SLC the phase reference system was upgraded with many of the original components remaining. The RF drive system phase stability requirements became tighter with operation and optimization of the SLC. This paper describes analysis done on the RF drive syst... View full abstract»

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  • A high current tandem accelerator for gamma-resonance contraband detection

    Publication Year: 1997, Page(s):3775 - 3779 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    TRIUMF and Northrop Grumman have developed a new system for the detection of concealed explosives and drugs. This Contraband Detection System (CDS) is based on the resonant absorption by 14N of gammas produced using 13C(p,γ)14N. The chosen reaction uses protons at 1.75 MeV acid the gammas have an energy of 9.17 MeV. By measuring both the resonant and the non-... View full abstract»

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  • High current density ion sources for heavy ion fusion accelerators

    Publication Year: 1997, Page(s):2755 - 2757 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Testing of the alumino-silicate ion source and the contact ionizer at high current density was satisfactory. The dispensers embedded in the extraction electrode were capable of providing sufficient cesium vapor coverage to the ionizer thus shows a promising way of constructing an ionizer for long term heavy ion fusion applications View full abstract»

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  • A multicusp ion source for radioactive ion beams

    Publication Year: 1997, Page(s):2770 - 2772 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    In order to produce a radioactive ion beam of 14O+ , a 10 cm-diameter, 13.56 MHz radio frequency (RF) driven multicusp ion source is now being developed at Lawrence Berkeley National Laboratory. In this paper we describe the ion source performance with respect to its capability as an ion source for radioactive ion beam (RIB) production using Ar, Xe and a 90% Ar/10% CO gas mix... View full abstract»

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  • Dust in accelerator vacuum systems

    Publication Year: 1997, Page(s):3547 - 3551 vol.3
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    Many accelerators of electron beams are susceptible to persistent beam lifetime disruptions, with correspondingly reduced performance. One distinguishes between three prevailing explanations of these disruptions: (1) trapping of positive atomic ions in the negatively charged beam; (2) trapping of small highly positively ionised micro-objects (“dust”) in the negatively charged beam; (3)... View full abstract»

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  • Supports and installation system of the RHIC superconducting magnets

    Publication Year: 1997, Page(s):3693 - 3695 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    The Relativistic Heavy-Ion Collider that is currently under construction at Brookhaven National Laboratory is composed of hundreds of superconducting magnets. A careful study was done in order to support and install these magnets inside the RHIC tunnel systematically and efficiently. A basic systems-approach was pursued and primary consideration was given to develop a system that would not be only... View full abstract»

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  • Conceptual and experimental feasibility study of a superconductive micro-undulator

    Publication Year: 1997, Page(s):3512 - 3514 vol.3
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Generating synchrotron radiation from conventional undulators in the hard X-ray region requires high electron energies. In order to open this spectral region for sources with smaller electron energy, such as ANKA (2.5 GeV), the period length of the undulator has to be decreased. In this paper the concept and the first successful tests towards constructing a superconductive micro-undulator with a p... View full abstract»

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  • Development of a broadband HOM load for the 714-MHz HOM-damped cavity

    Publication Year: 1997, Page(s):2983 - 2985 vol.3
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    A 714-MHz higher-order-mode (HOM) damped cavity was developed at KEK, and two cavities of this design are under operation in the Accelerator Test Facility (ATF) damping ring. Each cavity is equipped with four waveguide ports to extract HOM power. In order to achieve the very low HOM impedance required for the damping ring, each waveguide port should be terminated by a broadband, low-reflection loa... View full abstract»

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  • The design and construction of the permanent magnet Lambertson for the Recycler Ring at Fermilab

    Publication Year: 1997, Page(s):3280 - 3282 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    This paper will show and discuss the simple design of a permanent magnet Lambertson used to extract and inject the 8 GeV beam from the Fermilab Main Injector Ring to the Recycler Ring, and from the Recycler Ring to the Main Injector. Pictures will show how four different magnets used to form the injection and extraction double dog legs are made from one universal design. Detailed assembly drawings... View full abstract»

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  • Higher order mode analysis of the APT superconducting cavities

    Publication Year: 1997, Page(s):3093 - 3095 vol.3
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    In another contribution to this conference the design of superconducting cavities for low velocity proton beams will be reported. Besides an optimization of the rf properties of the accelerating π-mode, other modes, possibly excited by the traversing proton beam, need to be regarded. The full spectrum of modes in β=0.64 and β=0.825-cell cavities, as proposed for the Accelerator Produc... View full abstract»

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  • Design and operation of PET radio frequency quadrupoles

    Publication Year: 1997, Page(s):3018 - 3020 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    The PET isotope production accelerator built by a collaboration of BRF, FNAL, SAIC, and UW consists of four RFQ's to accelerate 3He2+ ions to 10.5 MeV for production of radioactive 18F, 11C, 15O and 13 N isotopes. The design, tuning, and operational results are presented View full abstract»

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  • Review of compact commercial accelerator products and applications

    Publication Year: 1997, Page(s):3770 - 3774 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (724 KB)

    Application-oriented accelerators are generally built commercially, and they often emphasize other qualities than the accelerators for research. These accelerators are generally specialized for a specific application, and are therefore very simple and inexpensive to operate. The author will review some products and applications in the field of medicine, such as the production of radioisotopes and ... View full abstract»

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  • Simulations of the LEDA RFQ 6.7-MeV accelerator

    Publication Year: 1997, Page(s):2752 - 2754 vol.3
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    The codes PARMTEQM and RFQTRAK simulate the beam transport through the radio-frequency-quadrupole (RFQ) accelerator for the low-energy-demonstration accelerator (LEDA). They predict 95% transmission for a matched 110-mA proton beam with a normalized-RMS emittance of 0.02 mm mrad. RFQTRAK simulates the effects of arbitrary vane-tip misalignments. This RFQ includes some new features in its design. I... View full abstract»

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  • APT/LEDA RFQ vacuum pumping system

    Publication Year: 1997, Page(s):3625 - 3627 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    This paper describes the design and fabrication of a vacuum pumping system for the APT/LEDA (Low Energy Demonstration Accelerator) RFQ (Radio Frequency Quadrupole) linac. Resulted from the lost proton beam, gas streaming from the LEBT (Low Energy Beam Transport) and out-gassing from the surfaces of the RFQ cavity and vacuum plumbing, the total gas load will be on the order of 7.2×10-4 View full abstract»

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  • Development of an RF driven plasma cathode for ion sources

    Publication Year: 1997, Page(s):2767 - 2769 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    Conventional tungsten cathode driven plasma sources are limited in the ability to provide large discharge currents and high discharge voltages for CW discharge plasmas. An RF driven plasma cathode based on the multicusp ion source technology has been developed at LBNL. It is shown that large electron currents at high discharge voltage can be achieved for CW discharge operation while maintaining ve... View full abstract»

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  • The LHC vacuum system

    Publication Year: 1997, Page(s):3542 - 3546 vol.3
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    The Large Hadron Collider (LHC) at CERN, involves two proton storage rings with colliding beams of 7 TeV. The machine will be housed in the existing LEP tunnel and requires 16 m long superconducting bending magnets. The vacuum chamber will be the inner wall of the cryostat and hence at the temperature of the magnet cold bore, i.e. at 1.9 K and therefore a very good cryopump. To reduce the cryogeni... View full abstract»

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  • The RF system for the National Spallation Neutron Source linac

    Publication Year: 1997, Page(s):3138 - 3140 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    The National Spallation Neutron Source (NSNS) system has been proposed to dramatically improve the neutron capabilities for science applications in the US. The NSNS is a fast pulse neutron source that would consist of a 1000 MeV H-linac, an accumulator ring, a neutron target, and an experimental area. Although the NSNS is to be built at Oak Ridge, the design responsibility is delegated to five US ... View full abstract»

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