Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268


Thu., December 02, 2004, at 3:00 p.m.

A Deep Underground Science and Engineering Laboratory (DUSEL) at Kimballton (measuring the complete solar neutrino luminosity)

R. Bruce Vogelaar, Virginia Tech, Blacksburg, VA
Bldg. 6008 Conference Room

The National Academy of Science, as well as several long-range plans from the physics communities, have endorsed the need to create a large, multi-disciplinary underground laboratory in the US. Several potential sites have been identified, and the National Science Foundation has begun a solicitation process to help formulate the science program as well as to identify and develop candidate sites.
The only site on the East Coast is at Kimballton, near Blacksburg, in western Virginia. Of all the sites, it is the only one located in sedimentary rocks. This makes it an IDEAL and unique location for physics, geoscience, and engineering studies. Kimballton is also only half an hour from Virginia Tech, the largest university in the state of Virginia. A multi-institution group has been developing this possibility, and will be competing on the national scale to have DUSEL located at Kimballton.
One of the assets of this location is a large limestone mine, already at a depth of 2300 ft (1850 mwe), with true drive-in access and extremely large caverns. The DUSEL facility at this location will try to take advantage of the existing infrastructure, while at the same time develop complementary and adjacent facilities down to at least 7000 ft (6000 mwe) to allow independent operation of the future facility.
Since 2003, Virginia Tech and the Naval Research Laboratory have been working to also develop a general low-level facility at this location. The initial program is to help develop extremely low-background germanium and gas proportional counters, and a single super-module of the Low-Energy Neutrino Spectroscopy (LENS-Sol) detector -- designed to measure the real-time low-energy neutrino spectrum from the Sun, including the pp-flux.
A precision measurement of Lí and its comparison with the photon luminosity of the sun L is the ultimate test of our knowledge of neutrino mixing and solar physics. Despite the impressive recent advances in solar neutrino research, the comparison Lv/L from measured fluxes and inferred neutrino physics is still rather imprecise: Lv/L = 1.4+0.7-0.2 at 3sigma. LENS-Sol will address this.
Progress in this these programs will be presented, with an invitation to new collaborators and for new experiments. See also: http://www.phys.vt.edu/~kimballton