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Ratti, A.

Paper Title Page
TU5PFP088 Integrating a Traveling Wave Tube into an AECR Ion Source 1038
 
  • M. Kireeff Covo, J.Y. Benitez, D. Leitner, C.M. Lyneis, A. Ratti
    LBNL, Berkeley, California
  • J.L. Vujic
    UCB, Berkeley, California
  
 

Funding: This work was supported by the Director, Office of Science, Office of High Energy and Nuclear Physics, Division of Nuclear Physics of the US Department of Energy under Contract No. DE-AC02-05CH11231.


A RF system of 500W - 10.75 to 12.75 GHz was designed and integrated into the Advanced Electron Cyclotron Resonance (AECR) ion source of the 88-inch Cyclotron at Lawrence Berkeley National Laboratory. The AECR produces ion beams for the Cyclotron giving large flexibility of ion species and charge states. The broadband frequency of a Traveling Wave Tube (TWT) allows modifying the shape of the annular ellipsoidal-shaped volume that couples and heats the plasma. Details of the RF source and Automatic Gain Control Unit designs for the TWT and integration with the AECR source are provided.

  
TH5RFP073 Test Results of the Luminosity Monitors for the LHC 3612
 
  • A. Ratti, J.-F. Beche, J.M. Byrd, L.R. Doolittle, P.F. Manfredi, H.S. Matis, M.T. Monroy, J. Stiller, W.C. Turner, H. Yaver, T. stezelberger
    LBNL, Berkeley, California
  • E. Bravin
    CERN, Geneva
  • K.A. Drees
    BNL, Upton, Long Island, New York
  
 

The Luminosity Monitor for the LHC has been built at LBL and is going to be installed in the LHC in early 2009. The device designed for the high luminosity regions (ATLAS and CMS) is a gas ionization chamber, that is designed with the ability to resolve bunch by bunch luminosity as well as survive extreme levels of radiation. During the experimental R&D phase of its design, the prototype of this detector has been tested extensively in RHIC as well as in the SPS. Result of these experiments are shown here, with comments on the implications for early operations of the LHC.

  
TH6REP076 Hardware-Based Fast Communications for Feedback Systems 4132
 
  • L.R. Doolittle, A. Ratti, C. Serrano, A. Vaccaro
    LBNL, Berkeley, California
  • L.R. Dalesio, Y. Tian
    BNL, Upton, Long Island, New York
  
 

The performance of feedback control systems is limited by latency. The hardware-based fast communication system described here offers means for deterministic, fault-tolerant data transmission for feedback systems requiring low-latency communications, such as orbit feedback and Radio Frequency (RF) controls.