1.
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Thin RF Windows for High-Pressure Gas-Filled Cavities
/ Alsharo'a, Mohammad ; Gosz, M ; Johnson, Rolland P ; Kaplan, Daniel ; Moretti, Alfred ; Nair, S ; Romanov, Gennady
RF cavities for muon ionization cooling channels can have RF windows over their ends to create better internal voltage profiles and to make them independent of each other. To be effective, the conducting window material must be sufficiently transparent to the muons to not affect the beam cooling, which means low mass and low Z. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3224
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2.
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Studies of RF Breakdown of Metals in Dense Gases
/ Hanlet, Pierrick M ; Alsharo'a, Mohammad ; Ankenbrandt, Charles ; Johnson, Rolland P ; Kaplan, Daniel ; Kuchnir, Moyses ; Moretti, Alfred ; Paul, Kevin ; Popovic, Milorad ; Yarba, Victor et al.
A study of RF breakdown of metals in gases has begun as part of a program to develop RF cavities filled with dense hydrogen gas to be used for muon ionization cooling. A pressurized 800 MHz test cell has been used at Fermilab to compare the conditioning and breakdown behavior of copper, molybdenum, chromium, and beryllium electrodes as functions of hydrogen and helium gas density. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3259
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3.
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Novel Muon Cooling Channels Using Hydrogen Refrigeration and High Temperature Superconductor
/ Del Frate, Licia ; Alsharo'a, Mohammad ; Barzi, Emanuela ; Johnson, Rolland P ; Kuchnir, Moyses ; Turrioni, Daniele
Ionization cooling, a method for shrinking the size of a muon beam, requires a low Z energy absorber, high-field magnets, and high gradient RF. It is proposed to use one gaseous hydrogen system to provide ionization energy loss for muon beam cooling, breakdown suppression for pressurized high-gradient RF cavities, and refrigeration for superconducting magnets and cold RF cavities. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3126
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4.
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High Pressure RF Cavities in Magnetic Fields
/ Hanlet, Pierrick M (Muons, Inc, Batavia) ; Ankenbrandt, Charles (Fermilab, Batavia, Illinois) ; Hartline, Robert (Muons, Inc, Batavia) ; Johnson, Rolland Paul (Muons, Inc, Batavia) ; Kaplan, Daniel (Illinois Institute of Technology, Chicago, Illinois) ; Kuchnir, Moyses (Muons, Inc, Batavia) ; Alsharo'a, Mohammad (Muons, Inc, Batavia) ; Moretti, Alfred (Fermilab, Batavia, Illinois) ; Paul, Kevin (Muons, Inc, Batavia) ; Popovic, Milorad (Fermilab, Batavia, Illinois) et al.
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.1364
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5.
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Recent Innovations in Muon Beam Cooling and Prospects for Muon Colliders
/ Johnson, Rolland P ; Alsharo'a, Mohammad ; Ankenbrandt, Charles ; Barzi, Emanuela ; Beard, Kevin ; Bogacz, S A ; Del Frate, Licia ; Derbenev, Yaroslav S ; Gonin, Ivan V ; Hanlet, Pierrick M et al.
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 high-luminosity muon collider. This helical cooling channel**(HCC) has solenoidal, helical dipole, and helical quadrupole magnetic fields to generate emittance exchange. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.419
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6.
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Simultaneous Bunching and Precooling Muon Beams with Gas-Filled RF Cavities
/ Paul, Kevin ; Derbenev, Yaroslav S ; Johnson, Rolland P ; Neuffer, David V ; Roberts, Thomas
High-gradient, pressurized RF cavities are investigated as a means to improve the capture efficiency, to effect phase rotation to reduce momentum spread, and to reduce the angular divergence of a muon beam. Starting close to the pion production target to take advantage of the short incident proton bunch, a series of pressurized RF cavities imbedded in a strong solenoidal field is used to capture, cool, and bunch the muon beam. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3295
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7.
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MANX, A 6-D Muon Cooling Demonstration Experiment
/ Roberts, Thomas ; Alsharo'a, Mohammad ; Ankenbrandt, Charles ; Hanlet, Pierrick M ; Johnson, Rolland P ; Kaplan, Daniel ; Kuchnir, Moyses ; Moretti, Alfred ; Paul, Kevin ; Popovic, Milorad et al.
Most ionization cooling schemes now under consideration are based on using many large flasks of liquid hydrogen energy absorber. One important example is the proposed Muon Ionization Cooling Experiment (MICE), which has recently been approved to run at the Rutherford Appleton Laboratory (RAL). [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3331
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8.
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High Pressure, High Gradient RF Cavities for Muon Beam Cooling
/ Johnson, R P ; Popovic, M
High intensity, low emittance muon beams are needed for new applications such as muon colliders and neutrino factories based on muon storage rings. Ionization cooling, where muon energy is lost in a low-Z absorber and only the longitudinal component is regenerated using RF cavities, is presently the only known cooling technique that is fast enough to be effective in the short muon lifetime. [...]
2004
External links: Published version from JACoW; Transparencies
In : 22nd International Linear Accelerator Conference, Lubeck, Germany, 16 - 20 Aug 2004, pp.266
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9.
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Compact, Tunable RF Cavities
/ Popovic, M (Fermilab) ; Alsharo'a, M (MUONS Inc., Batavia) ; Ankenbrandt, C M (Fermilab) ; Enchevich, I B (MUONS Inc., Batavia) ; Griffin, E (Fermilab) ; Johnson, R P (MUONS Inc., Batavia) ; Korenev, S (MUONS Inc., Batavia) ; Moretti, A (Fermilab) ; Tomlin, R E (Fermilab)
FERMILAB-APC.-
2008 - 3 p.
External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.MOPP105
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10.
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Magnets for the MANX 6-D Muon Cooling Demonstration Experiment
/ Kashikhin, V S (Fermilab) ; Alsharo'a, M (MUONS Inc., Batavia) ; Andreev, N (Fermilab) ; Johnson, R P (MUONS Inc., Batavia) ; Kahn, Stephen A (MUONS Inc., Batavia) ; Kashikhin, V (Fermilab) ; Lamm, M J (Fermilab) ; Roberts, T J (MUONS Inc., Batavia) ; Yonehara, K (Fermilab) ; Zlobin, A V (Fermilab)
FERMILAB-CONF-08-180-TD.-
2008 - 3 p.
External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.WEPD014
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