The Neutrino and Dark Matter Group Members consist of three professors: Pantic, Svoboda, and Tripathi, plus five postdoctoral researchers, eight graduate students, and a large number of undergraduate assistants. We work on individual experiments (e.g. SNO+, LUX, DarkSide, CAPTAIN ) in addition to working on developing basic neutrino detection instrumentation (e.g. nanofiltration, photomultipliers, water-based liquid scintillator, fast electronics). We are also involved in the design of new experiments like DUNE and LZ. On this page we introduce ourselves and our work. Many of us also have accompanying blogs that we update on a continuing basis.
I have been working in the field of neutrino physics for a number of years, having built many large underground multi-purpose detectors (IMB, Super-Kamiokande, KamLAND, SNO+, DUNE) and also smaller experiments such as Double Chooz and ANNIE. I am interested in understanding neutrinos and their relationship to the Standard Model. Why is the neutrino mass scale so small? Do neutrinos interact with the Higgs? Is there a relationship between neutrino physics and the physics of dark matter? Here is a recent CV: cv-rsvoboda.pdf Also check out Bob's Blog Spot.
My current research focuses on the ANNIE and SNO+ experiments. I was involved in the construction and commissioning of ANNIE Phase 1 in 2016 and my work is now focused on the simulation, data analysis and the preparation of the next physics phase. In SNO+, I'm currently studying the possibility of performing a reactor antineutrino measurement with the detector in its scintillator phase. Previously a member of the Double Chooz, CeSOX and Nucifer collaborations, I have studied low energy neutrinos using liquid scintillator detectors for neutrino oscillation studies, supernovae pointing and reactor monitoring.
Previously I worked on T2K; a long baseline neutrino experiment located in Japan. Since moving to UC Davis I have begun work on THEIA (a potential multi-purpose neutrino detector in its very early design stages) and SNO+ (located 2100 m underground in Sudbury, Ontario, Canada). My main research interests and activities focus on understanding the fundamental nature of neutrinos: how do neutrinos interact with matter? Are neutrinos their own anti-particles? Is CP violated in the lepton sector? Do neutrinos obey a “normal” or “inverted” mass hierarchy?
My interests lie in the study of CP-violation of neutrinos in the future Long Baseline Neutrino Facility (LBNF). I am also interested in the precise measurement of the neutrino properties, such as their mass hierarchy and their Majorana mass. I previously joined the Large-Area Picosecond Photo-Detector (LAPPD) collaboration, pursuing the new generation photosensors for the future precision measurements of neutrino properties. My current research program focuses on the DUNE/Proto-DUNE and the ANNIE experiments. I will be working at CERN and participating in the Proto-DUNE overall construction, commissioning and data-taking in early 2017. In the ANNIE experiment, I’m currently working on the detector construction, data reconstruction and data analysis.
My current work is focused on the SNO+ water phase physics, which includes studies into exotic physics such as invisible nucleon decay through hidden extra dimensions. Prior work includes simulations and studies for LBNE and Hyper-Kamiokande water physics, building and running Watchman radionuclide detector, programming the Delta-V control systems for the SNO+ scintillator distillation plant, and ongoing work on the SNO+ quality assurance system (nicknamed Scout).
My current research focuses on low- and medium-energy neutrino-nucleus interactions. In the low-energy regime (tens of MeV and below), I am particularly interested in supernova neutrino detection using next-generation experiments like DUNE. As part of an effort to simulate supernova events in DUNE, I have recently developed an event generator called MARLEY (Model of Argon Reaction Low-Energy Yields) for modeling low-energy neutrino scattering events in liquid argon. I work on medium-energy neutrino physics as a member of the ANNIE experiment. My ANNIE-related activities so far have focused on constructing new detector components and analyzing Phase 1 data. Some of my previous work has included helping to commission and take data on the mini-CAPTAIN experiment, preparing neutron cross section data libraries as a member of the LANL Nuclear Data Team, and developing neutron detectors for radiation portal monitors.
I am a Ph.D. student researching with the SNO+ and WATCHMAN collaborations. I am currently performing studies to determine the SNO+ sensitivity to antineutrinos produced at Canadian and US reactors. For WATCHMAN, I am writing software to improve radioisotope background studies performed in the RAT-PAC analysis tool. For most of 2016, I lived in Sudbury, Ontario and researched at SNOLAB while commissioning the SNO+ detector. At SNOLAB, I maintained and upgraded the SNO+ slow controls, boated in the SNO+ cavity to replace broken PMTs, and assisted in commissioning the scintillator purification plant. In the past, I performed neutron activation analysis using the McClellan Nuclear Research Center reactor. I have also used nanofiltration to attempt purification of liquid organic scintillators.
Juan Pablo Jesus Quinonez Franco ("JP")
I've researched neutrinos with Professor Svoboda since 2011. My interests include questions about the nature of neutrinos: Are neutrinos their own antiparticles? Are there more than three neutrino mass states? What mechanism gives neutrinos mass? I am also interested in nuclear nonproliferation applications of neutrino physics. I've written physics simulations and data acquisition software, and done hardware research and development, for detectors including CAPTAIN and WATCHMAN.