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optics

 
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TUPMA053 Injection Optimisation for INDUS-2 kicker, injection, septum, synchrotron 184
 
  • A. A. Fakhri, G. Singh
    RRCAT, Indore (M. P.)
  In this paper commissioning experience of injection into INDUS-2, a 2.5 GeV synchrotron radiation source is discussed. In initial stage of commissioning, partial beam loss was observed. In this context effect of various injection errors such as mismatch between pulse widths, jitter and magnetic field stability of kickers on injected and stored beam are studied1. A brief summary of the results is presented. After reducing jitter and fine adjustments of timings of kicker power supplies, partial beam loss reduced significantly.  
 
TUPMA084 Ions for LHC: Status of the Injector Chain ion, emittance, injection, quadrupole 226
 
  • D. Manglunki, A. Beuret, J. Borburgh, C. Carli, M. Chanel, L. D. Dumas, T. Fowler, M. Gourber-Pace, S. Hancock, M. Hourican, J. M. Jowett, D. Kuchler, E. Mahner, M. Martini, S. Maury, S. Pasinelli, U. Raich, A. Rey, J.-P. Royer, R. Scrivens, L. Sermeus, G. Tranquille, J. L. Vallet, B. Vandorpe
    CERN, Geneva
  The LHC will, in addition to proton runs, be operated with Pb ions and provide collisions at energies of 5.5 TeV per nucleon pair, i.e. more than 1.1 PeV per event, to experiments. The transformation of CERN's ion injector complex (Linac3-LEIR-PS-SPS) to allow collision of ions in LHC in 2008 is well under way. The status of these modifications and the latest results of commissioning will be presented. The remaining challenges are reviewed.  
 
TUPMA119 Beam Line Design for PEFP User Facility proton, linac, target, vacuum 271
 
  • Y.-S. Cho, B. H. Choi, B. C. Chung, K. Y. Kim, K. R. Kim, Y.-H. Kim, Y. Y. Lee
    KAERI, Daejon
  In the Proton Engineering Frontier Project (PEFP), 20MeV and 100MeV proton beams from a 100MeV proton liner accelerator will be supplied to users for beam applications. The basic lattice for beam transport line will be FODO from the linac to the targets. Dipole magnets exited with shaped AC currents will distribute the beam from the linac to five targets simultaneously. To provide flexibilities of irradiation conditions for users from many application fields, we design beam lines to the targets with wide or focused, external or in-vacuum, and horizontal or vertical beams. The details of the beam line design will be reported.  
 
WEC3MA01 Experimental Verification of Halo Formation Mechanism of the SNS Front End emittance, linac, simulation, beam-losses 333
 
  • D.-O. Jeon
    ORNL, Oak Ridge, Tennessee
  A new halo formation mechanism predicted by the simulation study was confirmed through a series of emittance measurement during the SNS Linac commissioning. The rms emittance and beam tail were greatly suppressed by the cure of transverse optics change. Detailed analisys and comparison of emittance measurement and simulation are presented here.

*SNS is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U. S. Department of Energy.

 
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WEPMA010 8 GeV Beam Line Optics Optimization for the Rapid Antiproton Transfers at Fermilab antiproton, lattice, proton, controls 345
 
  • V. P. Nagaslaev, V. A. Lebedev, J. P. Morgan, D. Vander Meulen
    Fermilab, Batavia, Illinois
  Tevatron Run-II upgrade requires a significant increase of the efficiency and speed of the antiproton transfers from the Accumulator to the Recycler. This goal represents a great challenge as the time between stopping and initiating the stacking regime should change from 1 hour down to a few minutes. Here we discuss the beam line optics aspects of this project. Results of lattice measurements and optimization are analyzed in terms of transport efficiency and stability.  
 
THPMA126 Beam Optics Design for DC High-voltage Accelerator of MW Level cathode, gun, electron, extraction 818
 
  • H. B. WANG, X. Jin, M. Li, X. S. Liu, Z. Xu
    CAEP/IAE, Mianyang, Sichuan
  Here, we report on the working group ''beam optics design'' of MW levels dc high-voltage accelerator, that will be used in radiation technologies in large-scale industrial production (flue gas treatment, metallurgy; waste water treatment, etc.). This workshop also had working groups on ''Electron Guns Designs and Beam control device'', ''MW level high-voltage power supply designs and fabrication'', and ''Beam scanning and extraction devices designs and fabrication''. Comparing with existent high-voltage accelerators, our facility have higher average power of >500mA dc, which resulting in some technological challenges on beam production, power supply, and beam extraction. Here, we are concerned with several proposals that other laboratories have been working on. Subjects of concern are optics, accelerator design and modeling, stability requirements that connects the conventional DC high-voltage accelerators for round-the-clock operation. We describe the design, the projected performance and the status of our facility.

WANG Han-bin*, XU Zhou, JIN Xiao, LI Ming, LIU Xi-san