Dr. Robert (Bob) C. Webb's
Professor Webb received his B.A. degree from the
Dr. Webb's research interests are in experimental high-energy particle physics; searching for super heavy GUT magnetic monopoles in cosmic rays using the MACRO detector at the Gran Sasso Laboratory; studies of proton-antiproton interactions at the Fermilab Collider and the design of new high performance detectors. Since 1995, Dr. Webb has been involved with the long baseline neutrino oscillation experiment, MINOS , to be carried out using Fermilab's Main Injector Accelerator. This experiment is designed to answer directly the question concerning whether or not neutrinos have mass in the range being indicated in recent atmospheric neutrino experiments. MINOS formally presented its first results on neutrino oscillations at Fermi Lab in March 2006 and has since that time produced the most precise measurements of the neutrino and anti-neutrino oscillation properties.
More recently, Dr. Webb has returned to his study of exotic forms of matter in cosmic rays. With faculty colleague, James White, they are part of the Large Underground Xenon Dark Matter Detector (LUX) experiment being staged at the Sanford Underground Laboratory in Lead, SD. This experiment uses a two-phase liquid Xenon detector to search for the feeble impacts of DM WIMPs as they pass through the detector. LUX is currently fully operational underground at the Sanford Underground Research Facility and we have just completed our 300 day “discovery” run. The first results from this data run indicates that we have not seen a dark matter signal in this new data, so we will be setting a new record for the abundance of these elusive particles. As the LUX program comes to an end, our collaboration has expanded (LZ) and is working to replace the current detector with a 10 tonne liquid xenon TPC in the Davis Cavern to push our search to even lower levels of abundance. We hope to be commissioning this new LZ detector in 2020.