IPAC2011 - List of Authors (Chojnacki, E.P.)

Paper	Title	Page
TUPS106	Absorber Materials at Room and Cryogenic Temperatures*	1792
	F. Marhauser, T.S. Elliott, A.T. Wu JLAB, Newport News, Virginia, USA E.P. Chojnacki CLASSE, Ithaca, New York, USA E. Savrun Sienna Technologies Inc., Woodinville, USA
	Funding: Authored by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177. We recently reported on investigations of RF absorber materials at cryogenic temperatures conducted at Jefferson Laboratory (JLab). The work was initiated to find a replacement material for the 2 Kelvin low power waveguide Higher Order Mode (HOM) absorbers employed within the original cavity cryomodules of the Continuous Electron Beam Accelerator Facility (CEBAF). This effort eventually led to suitable candidates as reported in this paper. Furthermore, though constrained by small funds for labor and resources, we have analyzed a variety of lossy ceramic materials, several of which could be usable as HOM absorbers for both normal conducting and superconducting RF structures, e.g. as loads in cavity waveguides and beam tubes either at room or cryogenic temperatures and, depending on cooling measures, low to high operational power levels.

Paper

Title

Page

Absorber Materials at Room and Cryogenic Temperatures*

1792

F. Marhauser, T.S. Elliott, A.T. Wu
JLAB, Newport News, Virginia, USA
E.P. Chojnacki
CLASSE, Ithaca, New York, USA
E. Savrun
Sienna Technologies Inc., Woodinville, USA

Funding: Authored by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177.
We recently reported on investigations of RF absorber materials at cryogenic temperatures conducted at Jefferson Laboratory (JLab). The work was initiated to find a replacement material for the 2 Kelvin low power waveguide Higher Order Mode (HOM) absorbers employed within the original cavity cryomodules of the Continuous Electron Beam Accelerator Facility (CEBAF). This effort eventually led to suitable candidates as reported in this paper. Furthermore, though constrained by small funds for labor and resources, we have analyzed a variety of lossy ceramic materials, several of which could be usable as HOM absorbers for both normal conducting and superconducting RF structures, e.g. as loads in cavity waveguides and beam tubes either at room or cryogenic temperatures and, depending on cooling measures, low to high operational power levels.