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Inelastic Neutron Cross Sections on Nuclei at FNAL

Description: Direct experimental measurements of the inelastic cross sections of neutrons on a variety of nuclei have been made at Fermi lab over the energy range from 50 to 350 GeV. These data may be used, together with nucleon-nucleon total cross sections measured through the same energy range, to justify and verify the interpretation of cosmic ray data on interaction mean free paths in air or iron in terms of nucleon-nucleon total cross sections at much higher energies.
Date: May 1, 1977
Creator: Jones, L.W.; /Michigan U. /Queen Mary, U. of London; Gustafson, H.R.; Longo, M.J.; Roberts, T.; Whalley, M. et al.
Partner: UNT Libraries Government Documents Department

Proposal of the Next Incarnation of Accelerator Test Facility at KEK for the International Linear Collider

Description: To reach design luminosity, the International Linear Collider (ILC) must be able to create and reliably maintain nanometer size beams. The ATF damping ring is the unique facility where ILC emittances are possible. In this paper we present and evaluate the proposal to create a final focus facility at the ATF which, using compact final focus optics and an ILC-like bunch train, would be capable of achieving 37 nm beam size. Such a facility would enable the development of beam diagnostics and tuning methods, as well as the training of young accelerator physicists.
Date: May 27, 2005
Creator: Araki, S.; Hayano, H.; Higashi, Y.; Honda, Y.; Kanazawa, K.; Kubo, K. et al.
Partner: UNT Libraries Government Documents Department

Nanosecond-Timescale Intra-Bunch-Train Feedback for the Linear Collider: Results of the FONT2 Run

Description: We report on experimental results from the December 2003/January 2004 data run of the Feedback On Nanosecond Timescales (FONT) experiment at the Next Linear Collider Test Accelerator at SLAC. We built a second-generation prototype intra-train beam-based feedback system incorporating beam position monitors, fast analogue signal processors, a feedback circuit, fast-risetime amplifiers and stripline kickers. We applied a novel real-time charge-normalization scheme to account for beam current variations along the train. We used the system to correct the position of the 170-nanosecond-long bunchtrain at NLCTA. We achieved a latency of 53 nanoseconds, representing a significant improvement on FONT1 (2002), and providing a demonstration of intra-train feedback for the Linear Collider.
Date: May 11, 2005
Creator: Barlow, R.; Dufau, M.; Kalinin, A.; /Daresbury; Myatt, G.; Perry, C. et al.
Partner: UNT Libraries Government Documents Department