Over the last 15 years our group has been central to many developments in the field of neutrino physics. Click here for more of our group history
We are presently operating the EXO-200 double-beta decay experiment at the WIPP underground site in southern New Mexico. This is one of the largest and more sophisticated experiments presently searching for neutrinoless double beta decay. The discovery of such a decay would establish the existence of 2-component Majorana Fermions (mundane Fermions, like the electron, are 4-component Dirac particles), demonstrate the violation of the lepton number and, possibly, establish the neutrino mass scale. A short article in Physics World explains the search for neutrinoless double beta decay.
Within the broader EXO program we are developing new methods to extend the sensitivity of a future multi-ton experiment, nEXO. This work has two major divisions, the first involves the extraction and identification (tagging) of the Ba atom produced in the double-beta decay of Xe using AMO techniques. The second is developing and testing new components and technologies for the nEXO detector to improve the charge and light readout; this includes work with silicon photomultipliers and modular pads for charge readout. A new setup has just been built to characterize the performance of such devices in Liquid Xenon.
We have started a new program to investigate the nature of gravity at length scales near 1 micron. This work uses ~5 micron diameter silica spheres, which are optically trapped and manipulated in vacuum using lasers. Monitoring the motion of these spheres as they are positioned near gravitational attractors allows us to search for new forces that may appear at micron distances.
We also have a program to develop novel radiation detectors for application to science, homeland security and medical physics.
We have openings for new graduate students in (almost) all of the projects above.
|Giorgio Gratta||Professor||Varian 146||(650) firstname.lastname@example.org|
|SLAC office||Bldg 40, Rm 210A||(650) 926-2698|
|Sha Zhang||Adm. Assistant||Varian 148||(650) email@example.com|
|Ralph DeVoe||Consulting Professor||Varian 128B||(650) firstname.lastname@example.org|
|Alex Fieguth||Postdoc||Varian 132||(650) email@example.com|
|Akio Kawasaki||Postdoc||Varian 136||(650) firstname.lastname@example.org|
|Brian Lenardo||Postdoc||Varian 132||(650) email@example.com|
|Gaosong Li||Postdoc||Varian 128B||(650) firstname.lastname@example.org|
|Nadav Priel||Postdoc||Varian 128A||(650) email@example.com|
|Shuoxing Wu||Postdoc||Varian 132||(650) firstname.lastname@example.org|
|Chas Blakemore||Graduate Student||Varian 134||(650) email@example.com|
|Jacopo Dalmasson||Graduate Student||Varian 136||(650) firstname.lastname@example.org|
|Mike Jewell||Graduate Student||Varian 128A||(650) email@example.com|
|Denzal Martin||Graduate Student (rotating)||Varian 132||(650) firstname.lastname@example.org|
|Alex Rider||Graduate Student||Varian 134||(650) email@example.com|
|Sandip Roy||Undergraduate Student||Varian 132||(650) firstname.lastname@example.org|
|Brandon Sandoval||Undergraduate Student||Varian 132||(650) email@example.com|
|Kevin Wells||Visitor from the theory group at Stanford||Varian 136||(650) firstname.lastname@example.org|