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Kersevan, R.

Paper Title Page
FPAT045 Upgrade of the ESRF Vacuum Control System 2857
 
  • D. Schmied, E. Burtin, P. Guerin, M. Hahn, R. Kersevan
    ESRF, Grenoble
  
  The temperature acquisition as well as the whole vacuum control system of the electron storage ring of the ESRF is in operation since more than ten years now. Apart from difficulties to have appropriate support for the old systems we start facing problems of aging and obsolescence. We have been reviewing our philosophy of data acquisition and remote control in order to update our systems with state of the art technology, taking into account our operational experience. We have started installing shielded “intelligent” devices inside the storage ring tunnel taking benefit from the availability of ethernet connections. Like this we can take advantage of the latest developments linked to these technologies, such as OPC Server, Webpage instrument control, and more.  
ROAD005 Status of NEG Coating at ESRF 422
 
  • M. Hahn
    ESRF, Grenoble
  • R. Kersevan
    ORNL, Oak Ridge, Tennessee
  
  The ESRF non-evaporable getter (NEG) coating facility is in operation since two years now. A large part of the insertion device straight sections of the electron storage ring has been equipped with in-house coated 5m long aluminum vacuum chambers with an inner vertical aperture of 8 mm. Operational experience with different coating parameters leading to different film thicknesses will be given and compared to bremsstrahlung data. The paper deals also with improvements of the coating production and chamber preparation, and describes some aspects of NEG coating data acquisition, visualization, and remote control. The R&D program leading to a more powerful DC solenoidal coating tool to further improve the NEG coating production throughput and quality aspects is also discussed.  
RPPT070 Status Report on the Installation of the Warm Sections for the Superconducting Linac at the SNS 3828
 
  • R. Kersevan, D.P. Briggs, I.E. Campisi, J.A. Crandall, D.L. Douglas, T. Hunter, P. Ladd, C. Luck, R.C. Morton, K.S. Russell, D. Stout
    ORNL, Oak Ridge, Tennessee
  
  Funding: SNS is managed by UT-Battelle, under contract DE-AC05-00OR22725 for the U.S. Department of Energy. SNS is a partnership of six national laboratories: Argonne, Brookhaven, Jefferson, Lawrence Berkeley and Oak Ridge.

The SNS superconducting linac (SCL) consists of 23 cryomodules (CMs), with possibly 9 additional CMs being added for future energy upgrade from 1 GeV to 1.3 GeV. A total of 32 warm sections separate the comparatively short CMs, and this allows a CM exchange within 48 hours, in order to meet demanding beam availability specifications. The 32 warm section chambers are installed between each pair of CMs, with each section containing a quadrupole doublet, beam diagnostics, and pumping. The chambers are approximately 1.6 m long, have one bellow installed at each end for alignment, and are pumped by one ion-pump. The preparation and installation of these chambers must be made under stringent clean and particulate-free conditions, in order to ensure that the performance of the SCL CMs is not compromised. This paper will discuss the development of the cleaning, preparation, and installation procedures that have been adopted for the warm sections, and the vacuum performance of this system.

 
RPPT071 Installation of the Spallation Neutron Source (SNS) Superconducting Linac 3838
 
  • D. Stout, I.E. Campisi, F. Casagrande, R.I. Cutler, D.R. Hatfield, M.P. Howell, T. Hunter, R. Kersevan, P. Ladd, W.H. Strong
    ORNL, Oak Ridge, Tennessee
  
  Funding: SNS is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy. SNS is a partnership of six national laboratories: Argonne, Brookhaven, Jefferson, Lawrence Berkeley, Los Alamos and Oak Ridge.

The Spallation Neutron Source (SNS) cold linac consists of 11 medium beta (0.61) and 12 high beta (0.81) superconducting RF cryomodules, 32 intersegment quadrupole magnet/diagnostics stations, 9 spool beampipes for future upgrade cryomodules, and two differential pumping stations on either side of the linac. The cryomodules and spool beampipes were designed and manufactured by Jefferson Laboratory, and the quadrupole magnets and beam position monitors were designed and furnished by Los Alamos National Laboratory. The remaining items were designed by ORNL. At present we are installing and testing the cold linac. Experience gained during installation will be presented. The performance in terms of mechanical and cryogenic systems will be described.