P. M. Hanlet

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A major technological challenge in building a muon cooling channel is operating rf cavities in multitesla external magnetic fields. We report the first proof-of-principle experiment of a high pressure gas-filled rf cavity for use with intense ionizing beams and strong external magnetic fields. rf power consumption by beam-induced plasma is investigated with(More)
Eight new ideas are being developed under SBIR/STTR grants to cool muon beams for colliders, neutrino factories, and muon experiments. Analytical and simulation studies have confirmed that a six-dimensional (6D) cooling channel based on helical magnets surrounding RF cavities filled with dense hydrogen gas can provide effective beam cooling. This helical(More)
A six-dimensional(6D)cooling channel based on helical magnets surrounding RF cavities filled with dense hydrogen gas* is used to achieve the small transverse emittances demanded by a highluminosity muon collider. This helical cooling channel**(HCC) has solenoidal, helical dipole, and helical quadrupole magnetic fields to generate emittance exchange.(More)
  • Mahzad BastaniNejad, Abdelmageed Elmustafa, +17 authors Dianne R. Welch
  • 2008
An 805 MHz test cell that was originally designed to study the use of RF cavities pressurized with dense hydrogen gas for ionization cooling of muon beams has been used to study the electrical breakdown mechanisms of metallic surfaces. In these studies, the dense hydrogen gas absorbs dark currents and eliminates multipacting, which can complicate the(More)
Ramesh Gupta, Erich Willen Brookhaven National Accelerator Laboratory Charles Ankenbrandt, Emanuela Barzi, Alan Bross, Ivan Gonin, Stephen Geer, Vladimir Kashikhin, Valeri Lebedev, David Neuffer, Milorad Popovic, Vladimir Shiltsev, Alvin Tollestrup, Daniele Turrioni, Victor Yarba, Katsuya Yonehara, Alexander Zlobin Fermi National Accelerator Laboratory(More)
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