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Open Cavity Solutions to the RF UB Magnetic Field Problem.

DE2008924424

Publication Date	2007
Personal Author	Palmer, R. B.; Gallardd, J. C.; Berg, J. S.; Fernow, R. C.
Page Count	5
Abstract	It has been observed that breakdown in an 805 MHz pill-box cavity occurs at much lower gradients as an external axial magnetic field is increased. This effect was not observed with on open iris cavity. It is proposed that this effect depends on the relative angles of the magnetic and maximum electric fields: parallel in the pill-box case; at an angle in the open iris case. If so, using an open iris structure with solenoid coils in the irises should perform even better. A lattice, using this principle, is presented, for use in 6D cooling for a Muon Collider. Experimental layouts to test this principle are proposed.
Keywords	Magnetic fields Cavities Breakdown Electric fields Muons Neutrinos Solenoids Gradients
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Brookhaven National Lab., Upton, NY. Physics Dept.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200820
Contract Number	DE-AC02-98CH10886

Open Cavity Solutions to the RF UB Magnetic Field Problem.

Open Cavity Solutions to the RF UB Magnetic Field Problem.
DE2008924424

Publication Date	2007
Personal Author	Palmer, R. B.; Gallardd, J. C.; Berg, J. S.; Fernow, R. C.
Page Count	5
Abstract	It has been observed that breakdown in an 805 MHz pill-box cavity occurs at much lower gradients as an external axial magnetic field is increased. This effect was not observed with on open iris cavity. It is proposed that this effect depends on the relative angles of the magnetic and maximum electric fields: parallel in the pill-box case; at an angle in the open iris case. If so, using an open iris structure with solenoid coils in the irises should perform even better. A lattice, using this principle, is presented, for use in 6D cooling for a Muon Collider. Experimental layouts to test this principle are proposed.
Keywords	Magnetic fields Cavities Breakdown Electric fields Muons Neutrinos Solenoids Gradients
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Brookhaven National Lab., Upton, NY. Physics Dept.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200820
Contract Number	DE-AC02-98CH10886