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  • 1
    Digitale Medien
    Digitale Medien
    Status of the ATLAS accelerator (1986)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 737-739 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: The construction of the ATLAS superconducting heavy-ion linear accelerator is complete. The first beam acceleration occurred on March 22, 1985. The first experiment with the ATLAS linac took place during the week of October 7, 1985. The project was completed on time and within budget. Initial system performance has met our expectations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1138847
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  • 2
    Digitale Medien
    Digitale Medien
    Recent work on very-low-velocity superconducting accelerating structures (1986)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 770-772 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: A superconducting resonant cavity containing a 10-cm active length, interdigital accelerating structure has been demonstrated to work at accelerating gradients above 5 MV/m. The 48.5-MHz, four-gap accelerating structure is designed for particle velocities 0.007c≤V≤0.014c, and is the first of several structures intended to form a low-velocity positive-ion injector linac for the ATLAS accelerator.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1138860
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  • 3
    Digitale Medien
    Digitale Medien
    Superconducting rf cavity in a dc magnetic field (1988)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 59 (1988), S. 2100-2101 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: A superconducting (SC) rf cavity has been operated in the presence of an external magnetic field up to 2.4 kG. Measurements on the 48.5-MHz cavity were performed at 4.2 K. The external field was produced by an unshielded 60-kG superconducting solenoid 5.8 cm from the cavity. No degradation of cavity Q was observed for fields on the outer surface of the cavity up to 1240 G. This result is consistent with no flux penetration of the cavity surface for fields up to the first critical field of niobium at 4.2 K, and shows that strong focusing elements with large fringing magnetic fields may be placed immediately next to Nb SC accelerating structures without causing performance degradation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1140038
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  • 4
    Digitale Medien
    Digitale Medien
    Physics and Accelerator Applications of RF Superconductivity (1993)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Nuclear and Particle Science 43 (1993), S. 635-686 
    Details
    ISSN: 0163-8998
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.ns.43.120193.003223
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  • 5
    Digitale Medien
    Digitale Medien
    rf properties of an oxide-superconductor half-wave resonant line (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 52 (1988), S. 930-932 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Cylindrical rods of YBa2Cu3O7−δ from 0.6 to 1.9 mm in diameter and up to 565 mm long have been used as the center conductor of a half-wave resonant coaxial line. The resonant line can be immersed in liquid nitrogen, which provides excellent cooling of the current-carrying superconducting surface, even in the presence of substantial rf losses. Such superconducting resonant lines have been operated at frequencies of a few hundred MHz and at rf surface magnetic fields up to 150 G at 77 K.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.99277
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  • 6
    Digitale Medien
    Digitale Medien
    Tests of a superconducting rf quadrupole device (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 514-516 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: High surface electric fields have been obtained in the first tests of a superconducting rf quadrupole device. The rf quadrupole fields were generated between niobium vanes 6.5 cm in length, with an edge radius of 2 mm, and with a beam aperture of 6 mm diameter. In tests at 4.2 K, the 64 MHz device operated cw at peak surface electric fields of 128 MV/m. Virtually no electron loading was observed at fields below 100 MV/m. It was possible to operate at surface fields of 210 MV/m in pulses of 1 ms duration using a 2.5 kW rf source. For the vane geometry tested, more than 10 square centimeters of surface support a field greater than 90% of the peak field. The present result indicates that electric fields greater than 100 MV/m can be obtained over an appreciable area, sufficient for some accelerator applications. It also shows that superconducting rf technology may provide an extended range of options for rf quadrupole design.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.103636
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  • 7
    Digitale Medien
    Digitale Medien
    Energy sensitive detection of heavy ions with transition edge calorimeters (1993)
    Springer
    Journal of low temperature physics 93 (1993), S. 231-238 
    Details
    ISSN: 1573-7357
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Status and results of a research project are reported, which aims at developing calorimetric low temperature detectors for heavy ions. The special conditions for the detection of energetic heavy ions are discussed. The response of an aluminium transition edge calorimeter, operated at about1.5K, to the impact of heavy ions was investigated. The observed energy resolutions ΔE/E=3.9×10−3for5.9MeV/u 208 Pb-ions, ΔE/E=1.6×10−3for4.8MeV/u 58 Ni-ions and ΔE/E=4.3×10−3for100MeV/u 20 Ne-ions are most probably not yet limited by the intrinsic detector resolution. The present results already represent an improvement over conventional solid state detectors and ionization chambers.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00693425
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