cozzyd at kicp dot uchicago dot edu
ERC 491 (in KICP)
5640 S Ellis Ave, #491, Chicago, IL 60637
Mobile: 775.846. 9105
ANITA-4 shortly before flight at the Long-Duration
Balloon Facility near McMurdo Station, Antarctica
Right now, I primarily work with Professor Abigail Vieregg on several experiments seeking to observe, for the first time, some of the most energetic particles in the universe. (ANITA, ARA, GNO) search for radio emissions produced by extremely-high-energy (~EeV) neutrinos interacting in glacial ice. These neutrinos are thought to be produced through interactions of ultra-high energy-cosmic rays (which we do know exist) with the cosmic microwave background (which we also know exists) through the GZK process. A successful observation would help shed light on the origin of ultra-high-energy cosmic rays and provide the highest-energy measurements of neutrino-nucleon cross-sections.
Me fiddling around with one of the DMTPC prototypes
Previously, in graduate school, I worked on developing a detector sensitive to the direction of low-energy (< 100 keV) nuclear recoils (DMTPC). Due to a daily asymmetry in expected dark matter particle trajectories at Earth, such a detector would be able to confirm the astrophysical origin of a putative dark matter signal and also allow probing dark matter cross-sections lower than the coherent neutrino scattering "floor" that could limit future counting experiments. The same technology can be also used for directional fast neutron detection, which is potentially useful for background monitoring or non-proliferation.
As an undergrad, I worked on tracking studies for the SiD detector concept for the ILC.
In general, my research interests mainly lie in developing novel particle detectors, analysis tools, and statistical methods for rare-event searches.
- Massachusetts Institute of Technology, Cambridge, MA
Ph.D in Physics (Experimental Particle Physics), 2015.
Thesis: A Model of the Directional Sensitivity of Low-Pressure CF4 Dark Matter Detectors
Advisers: Peter Fisher, Jocelyn Monroe (now at RHUL).
Stanford University, Stanford, CA
B.S. in Physics (with honors), 2009. Computer Science minor.
Honors Thesis: Analysis of the effect of precise vertexing on τ polarization measurements in the SiD
Postdoctoral Scholar / Associate Fellow June 2015 -
University of Chicago / Kavli Institute for Cosmological Physics, Chicago, Ill.
Radiodetection of extremely high-energy neutrinos (ANITA, ARA, GNO). I am currently primarily involved in ANITA analysis efforts, but have also contributed to ANITA calibration, ANITA flight software, GNO data acquisition and fieldwork, GNO analysis, and development of a new phased-trigger array for ARA.
Graduate Researcher Fall 2009 - May 2015
Massacusetts Institute of Technology / Laboratory for Nuclear Science, Cambridge, Mass.
Development of a detector sensitive to the direction of dark matter recoils (DMTPC). Usually funded as a research assistant, but also occassionally a teaching assistant and supported by a Rossi Fellowship my first year. As one of only a few students working on DMTPC, I contributed heavily to hardware development, automation, monitoring, analysis tools, and simulation. My thesis evaluated the directional sensitivity of the detector technology, including all known effects, for the first time.
Research Intern June 2007 - June 2009
SLAC National Accelerator Laboratory, Menlo Park, Calif.
Worked primarily on SiD tracking studies.
Resident Computer Consultant September 2008 - June 2009
Stanford Residential Computing, Stanford, Calif.
Member of student residential staff specializing in computer help. Included teaching of basic computer literacy and multimedia courses.
Managing Layout Editor September 2006 - June 2007
The Stanford Daily, Stanford, Calif.
Worked on design for a daily student newspaper. Hired and trained new nightly layout editors.
- ICHEP 2016, Chicago, Ill. ( Overview Talk on ANITA, Poster on antenna array)
- ARENA 2016, Groningen, Netherlands ( Overview Talk on ANITA )
- Cygnus 2015, Los Angeles, Calif. ( Talk on DMTPC Directional Sensitivity )
- UCLA Dark Matter 2014, Los Angeles, Calif. ( Overview talk on DMTPC )
- TAUP 2013, Monterey, Calif. ( Overview talk on DMTPC )
- MIAMI 2012, Fort Lauderdale, Flor. ( Overview talk on DMTPC )
- Computing in High-Energy AstroParticle Research 2016 (Participant; talk on ANITA analysis)
- Next-Generation Techniques for UHE Astroparticle Physics (Organizer)
- KICP Dark Matter Hub Workshop (talk on DMTPC)
Teaching and Outreach
- TA for 8.01 (Freshman Mechanics) at MIT
- TA for 8.811 (Graduate Nuclear Physics) at MIT
- Instructor for CS1C and CS2C (residential basic computing courses) at Stanford
- Presenter at Astronomy Conversations at the Space Visualization Lab at Adler Planetarium, Chicago
- Instructor at Yerkes Winter Institute, 2015
- Upward Bound Tutor (Sep 2015 - current)
- Waste Isolation Pilot Plant (WIPP), Carlsbad, N. M. (on occasion, 2010-2013).
Deployment of DMTPC prototype underground in a salt mine environment.
- Summit Station, Greenland (June, 2015).
Deployment of phased array antenna prototype in a borehole
- Columbia Scientific Ballooning Facility, Palestine, Tex. (June-July, 2016)
Integration for ANITA-4 flight
- Long-Duration Balloon Facility, near McMurdo Station, Atarctica (November - December 2016)
- Human: English (fluent), Romanian (native), Spanish (intermediate)
The most thorough and up-to-date list of publications I've contributed to is at INSPIREHEP (for now, everything there with my surname is me).
- Directional Sensitivity of DMTPC Detectors
- Characteristics of Four Upward-pointing Cosmic-ray-like Events Observed with ANITA
Phys.Rev.Lett. 117 (2016) no.7, 071101
- The Dark Matter Time Projection Chamber 4Shooter directional dark matter detector: Calibration in a surface laboratory
Nucl.Instrum.Meth. A755 (2014) 6-19
- First Dark Matter Search Results from a Surface Run of the 10-L DMTPC Directional Dark Matter Detector
Phys.Lett. B695 (2011) 124-129
The ANITA code I work on is mostly available on GitHub. Most other code I've written for research remains, for now, in private repositories. Some of it would be useful to others and I hope to make those bits available someday.
I was born in Bucharest, Romania, but moved with my parents to the United States when I was 5. I spent three years in Iowa City, Iowa, one year in Ames, Iowa, and the remainder of my pre-college years in Reno, Nev. I went to Stanford for undergrad and MIT for graduate school. I currently live in Chicago with my wife, Marie.
I am an advocate of free software. I prefer to use Fedora on my personal computers and CentOS/Scientific Linux on my work computers. vim is my preferred text editor.
I am also an advocate of walkable cities and urbanism. My wife and I choose to live car-free and I usually get around by public transit, walking, or cycling.
My wife is an author, you should buy her book.
Elsewhere OnlineIn many cases, if you see a cozzyd on the internet, it is me, but there is at least one other person using that username.
Some other places I exist (but rarely check or update):
Last updated Jan 6, 2017