Gregory Keefer

Graduate Student
Department of Physics and Astronomy
University of Alabama, Tuscaloosa

I am currently working on KamLAND. For the past three years, in a collaborative effort with colleagues from Tohoku University and Caltech, we have been developing techniques to remove radioactive impurities from the liquid scintillator in KamLAND. The research is necessary to prepare for a 7Be phase of KamLAND. This would be the first direct measurement of one of the major components to the standard solar model. The spectrum is currently hidden in KamLAND due to the low energy contribution of naturally occurring radio isotopes. To be confident in our ability to distinguish neutrino events from background, we must reduce the 210Pb by a factor of 105, 40K by 100 and 85Kr by 106.



Current Research 

KamLAND Purification Research for 7Be phase (Alabama)   


KamLAND Source/Purification Material Certification   


My Analysis and MC Page


Monthly US Phone Meeting Purification Update Page


KamLAND Purification System (Tohoku)


Phase One Purification Results

Main Collaboration Web pages

KamLAND Berkeley		    KamLAND Tohoku


ELogs

Tohoku (bert)                                             CalTech (Mirror)                    


Berkeley (4pi / Muon Tracker)                    Alabama Detectors



Other KamLAND Pages

Wiki             Run Summary                    File Data Base


Links to Useful Pages


Mathworld			wolfram.com physics		CERNLIB

High Energy Physics Meetings	Spires hep			Particle Data

Root				LUND Decay Data Search



Net Library	        	UA Libraries			Webster Dictionary

Publications

  1. KamLAND Collaboration, Precision Measurement of Neutrino Oscillation Parameters with KamLAND, PRL, 100, 221803 6 June 2008
  2. D.S.Leanord et. al., Systematic study of trace radioactive impurities in candidate construction materials for EXO-200, Nucl. Instr. and Meth. A, 591 (2008) 490-509
  3. G. Keefer Low Background phase of KamLAND, To be published in J. Phys. G (Neutrino 2006 Conference, Sante Fe)
  4. KamLAND Collaboration, Search for the Invisible Decay of Neutrons with KamLAND, PRL hep-ex/0512059 (2006).
  5. KamLAND Collaboration, Experimental Investigation of Geologically Produced Antineutrinos with KamLAND, Nature 436, 499-503 (2005)
  6. KamLAND Collaboration, Measurement of Neutrino Oscillation with KamLAND: Evidence of Spectral Distortion, PRL hep-ex/0406035 (2004).
  7. P.Coulter, G. Keefer, An Explicit Completeness Relationship for the Potential Square Well. University of Alabama McNair Scholars Journal 3, (2003).

Presentations/Posters/Other

  1. Neutrino 2006, Poster Presentation Poster Title
  2. ISAPP 2006, Poster Presentation
  3. CAM 2005 Presentation, Preperation for a Low Background Phase of KamLAND
  4. Beta Spectrum Code, Beta Spectra for 39Ar,85Kr, and 210Bi

Contact Information

Physics Dept.
206 Gallalee Hall
Box 870324
Tuscaloosa, AL 35487-0324

205-348-3780
keefe002$at$bama.ua.edu


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