PAC09 - List of Authors (Qian, Z.)

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Qian, Z.

Paper	Title	Page
TU5PFP032	RF Studies at Fermilab MuCool Test Area	888
	D. Huang, Y. Torun IIT, Chicago, Illinois A.D. Bross, A. Moretti, Z. Qian Fermilab, Batavia D. Li, M.S. Zisman LBNL, Berkeley, California J. Norem ANL, Argonne
	Funding: The United States Department of Energy The accelerating gradient in a RF cavity is limited by many factors such as the surface material properties, RF frequency, the external magnetic field and the gas pressure inside the cavity. In the MuCool Program, RF cavities are studied with the aim of understanding these basic mechanisms and improving their maximum stable accelerating gradient. These cavities are being developed for muon ionization cooling channel for a Neutrino Factory or Muon Collider. We report studies using the 805 MHz and 201 MHz RF cavities in the MuCool Test Area (MTA) at Fermilab. New results include data from buttons of different materials mounted in the 805 MHz cavity, study of the accelerating gradient in the 201 MHz cavity and X-ray background radiation from the cavities due to Bremsstrahlung. The 201 MHz cavity has been shown to be stable at 19 MV/m at zero magnetic field, well in excess of its 16 MV/m design gradient. We will also discuss results from the 201 MHz cavity study in magnetic field and introduce the test of E × B effects with the 805 MHz box cavity.

Paper

Title

Page

TU5PFP032

RF Studies at Fermilab MuCool Test Area

888

D. Huang, Y. Torun
IIT, Chicago, Illinois
A.D. Bross, A. Moretti, Z. Qian
Fermilab, Batavia
D. Li, M.S. Zisman
LBNL, Berkeley, California
J. Norem
ANL, Argonne

Funding: The United States Department of Energy

The accelerating gradient in a RF cavity is limited by many factors such as the surface material properties, RF frequency, the external magnetic field and the gas pressure inside the cavity. In the MuCool Program, RF cavities are studied with the aim of understanding these basic mechanisms and improving their maximum stable accelerating gradient. These cavities are being developed for muon ionization cooling channel for a Neutrino Factory or Muon Collider. We report studies using the 805 MHz and 201 MHz RF cavities in the MuCool Test Area (MTA) at Fermilab. New results include data from buttons of different materials mounted in the 805 MHz cavity, study of the accelerating gradient in the 201 MHz cavity and X-ray background radiation from the cavities due to Bremsstrahlung. The 201 MHz cavity has been shown to be stable at 19 MV/m at zero magnetic field, well in excess of its 16 MV/m design gradient. We will also discuss results from the 201 MHz cavity study in magnetic field and introduce the test of E × B effects with the 805 MHz box cavity.