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TUOBFI — Accelerator Technology 27-Jun-06 12:00 - 12:20 TUOBFI — Accelerator Technology A Diagnostic Kicker System as a Versatile Tool for Storage Ring Characterisations For the BESSY II Synchrotron Light Source two diagnostic kicker systems including cur- O. Dressler, J. Feikes, J. Kolbe (BESSY GmbH) rent pulsers were developed, allowing vertical and horizontal deflection of the stored beam. Synchronised with the revolution trigger, simultaneous pulsing of the systems kicks the stored beam in any transverse direction with a repetition rate of up to 10 Hz allowing a wide range of storage ring investigations. Examples are dynamic aperture measurements and frequency map measurements. Special efforts were made to assure the demands of high amplitude and time stability for this kind of experiments. The technical concept of the systems and the controlling of the measurements are described. Chair: J.-M. Lagniel (GANIL, Caen) 157 TUOBFI01
TUOCFI01 TUOCFI02 TUOCFI03 27-Jun-06 14:00 - 15:00 TUOCFI — Accelerator Technology TUOCFI — Accelerator Technology Radiation Measurements vs. Predictions for SNS Linac Commissioning Detailed predictions for radiation fields, in- I.I. Popova, F. X. Gallmeier, P. L. Gonzalez, D. C. Gregory (ORNL) duced inside and outside of the accelerator tunnel, were performed for each of the SNS accelerator commissioning stages, from the ion source through the entire LINAC. Analyses were performed for normal commissioning parameters, for worst possible beam accidents, and for beam fault studies, using the Monte Carlo code MCNPX. Proper temporary shielding was developed and installed in local areas near beam termination points (beam stops) and some critical locations, such as penetrations, in order to minimize dose rates in general occupied areas. Areas that are not full-time occupied and have dose rates above a specified limit during beam accident and fault studies were properly restricted. Radiation monitoring was performed using real time radiation measurement devices and TLDs to measure absorbed dose and dose equivalent rates. The measured radiation fields were analyzed and compared with transport simulations. TLD readings vs. calculations are in a good agreement, generally within a factor of two difference. A large inconsistency among instrument readings is observed, and an effort is underway to understand the variations. First Results of SNS Laser Stripping Experiment V.V. Danilov, A.V. Aleksandrov, S. Assadi, J. Barhen, Y. Braiman, D.L. Brown, W. Grice, S. Henderson, J.A. Holmes, Y. Liu, A.P. Shishlo (ORNL) Thin carbon foils are used as strippers for charge exchange injection into high intensity proton rings. However, the stripping foils become radioactive and produce uncontrolled beam loss, which is one of the main factors limiting beam power in high intensity proton rings. Recently, we presented a scheme for laser stripping of an H − beam for the SNS ring. First, H − atoms are converted to H0 by a magnetic field, then H0 atoms are excited from the ground state to the upper levels by a laser, and the excited states are converted to protons by a magnetic field. This paper presents first results of the SNS laser stripping proof-of-principle experiment. The experimental setup is described, and possible explanations of the data are discussed. RF Cavity with Co-based Amorphous Core A compact acceleration cavity has been M. Kanazawa, T. Misu, A. Sugiura (NIRS) developed with new Co-based amorphous cores, which will be used in a dedicated synchrotron for cancer therapy. This core has high permeability that makes the cavity length short, and the cavity with no tuning system is possible with low Q-value of about 0.5. An acceleration cavity consists of two units that have a single acceleration gap at the center, and at the both side of the gap there are quarter wave coaxial resonators. Considering the requirements for easy operation, a transistor power supply was used instead of commonly used tetrode in the final stage RF amplifier. Each resonator has maximum impedance about 400? at 3MHz, and has been attached with 1:9 impedance transformer. In the frequency range from 0.4 to 8 MHz, the acceleration voltage of more than 4kV can be obtained with total input RF power of 8kW. With these performances, the cavity length is short as 1.5m. In this paper the structure of the cavity and their tested high power performances are presented. 158 Chair: A. Mosnier (CEA, Gif-sur-Yvette)
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Contents MOXPA — Linear Colliders
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Contents MOPCH056 Development of Hi
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Contents MOPCH140 Compensation of L
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Contents MOPLS020 Rad-hard Luminosi
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Contents MOPLS102 Beam Dynamic Stud
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TUOCFI — Accelerator Technology C
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Contents TUPCH074 Fast and Precise
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Contents TUPCH159 High Power Wavegu
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Contents TUPLS039 Proposal of a Nor
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Contents TUPLS127 Permanent Deforma
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Contents WEPCH020 Extending the Lin
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Contents WEPCH108 FFAG Computation
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Contents WEPCH192 Compact Electron
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Contents WEPLS078 Design Study of t
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THOPA — Synchrotron Light Sources
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Contents THPCH042 Numerical Estimat
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Contents THPCH124 Visual Programmin
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Contents THPLS008 Commissioning of
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Contents THPLS099 Fast Kicker Syste
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MOXPA — Linear Colliders, Lepton
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MOYBPA — Circular Colliders 26-Ju
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MOZBPA — Synchrotron Light Source
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WEYPA — Linear Colliders, Lepton
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WEOAPA — Linear Colliders, Lepton
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WEXFI — Beam Dynamics and Electro
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WEOFI — Beam Dynamics and Electro
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THPPA — Prize Presentations 29-Ju
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THPCH — Poster Session 29-Jun-06
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Amro, A. THPLS043 An, D.H. TUPCH070
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Bates, D.A. WEPCH150 Battaglia, D.
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Bondarenko, A.V. MOPCH057, MOPCH073
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Campmany, J. THPLS053, THPLS134, TH
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Chung, C.C. TUPCH105 Chung, C.W. TU
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Della Mea, G. TUPLS016 Della Penna,
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THPLS119 Ellison, J.A. WEPCH144, TH
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Frisch, J.C. MOPLS081, TUYPA02, TUP
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Grabosch, H.-J. THPLS103 Gräf, H.-
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WEPCH095 Hershcovitch, A. TUPLS103
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Ischebeck, R. WEOAPA01 Ishi, Y. WEP
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Klein, R. THPLS013, THPLS014, THPLS
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Kurdi, G. WEPLS059 Kurennoy, S.S. T
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Lin, F. MOPCH100 Lin, F.-Y. THPCH18
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Mariette, C. THPLS102 Marinkovic, G
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Miyahara, Y. THPCH048 Miyajima, T.
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Neuenschwander, R.T. WEPCH005, THPC
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Owens, P.H. THPCH113 Oyaizu, M. TUP
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Plate, D.W. THPLS114 Plesko, M. WEI
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Reiche, S. MOPCH028, WEPCH150 Reich
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Saewert, G.W. TUPLS069 Safranek, J.
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TUPCH050, THPCH150 Schriber, H.J. W
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Simos, N. MOPCH138, TUPLS133, WEPCH
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Sun, Y. MOPLS089 Surrow, B. MOPLS05
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Tobiyama, M. MOPLS033, TUPCH057, WE
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van Oudheusden, T. MOPCH058, MOPCH0
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TUPCH083 Welton, R.F. MOPCH129, TUP
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Yurkov, M.V. TUPCH081, THPLS133 Yus
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