Group Members
Principal Investigator
-
Reina Maruyama
Reina’s current research interests are in understanding the particle nature of dark matter and neutrinos, and role of symmetry in fundamental physics. When not working with her fantastic team listed here, she can be found in Underground Laboratories, teaching, or skiing.
Office: WL 209ph: +1 (203) 432-3362
Research Scientist
-
Michael Jewell
Mike received his Ph.D. from Stanford University in 2020. His thesis work was on the search for neturinoless double beta decay in Liquid Xenon with the full dataset of EXO-200 and R&D efforts for the next generation experiment, nEXO. He joined the Maruyama Group in May 2020, where he works on the HAYSTAC experiment searching for Dark Matter axions using a resonant microwave cavity enhanced through the use of quantum technology.
HAYSTAC/Single-photon detectionmichael.jewell@yale.eduOffice:(203) 436-9504 -
Penny Slocum
Penny received her Ph.D. in experimental particle physics from the University of Virginia. After the Ph.D. she worked as a Caltech Postdoctoral Scholar at Jet Propulsion Laboratory in Pasadena, CA to analyze spacecraft data from solar energetic particle measurements. She then transitioned to the aerospace industry in El Segundo, CA to work on instrument development and analysis for suborbital sounding rocket campaigns. Since returning to the Eastern U.S. and arriving at Yale, she has worked on RF detection measurements and simulation. In her free time she can be found running or spending time near the water.
Project 8, CUPIDpenny.slocum@yale.eduYale University2034369718
Post Docs
-
Eun-Joo Ahn
Eun-Joo Ahn received her Ph.D. in History from the University of California Santa Barbara in 2023 and a Ph.D. in Astronomy and Astrophysics from the University of Chicago in 2006. She is a historian of science who explores how science shapes and gets shaped by our surroundings. Her dissertation examined the founding and development of Mount Wilson Observatory, an astronomical observatory located near Pasadena, in relation to Southern California’s sociocultural and natural environment during the early twentieth century. At Yale, she will work on Asian Americans and STEM, where one of her interests is studying transnational science. Eun-Joo was a particle astrophysicist before transitioning into history of science. Her primary interests were in composition determination and hadronic interactions of ultra high energy cosmic rays. She was a member of the Pierre Auger Collaboration, and has also worked in phenomenology of leptogenesis and astrophysical dark matter.
History of ScienceOffice: WL 237 -
Tyler Johnson
Tyler received his PhD from Duke University in Experimental Nuclear Physics in the Fall of 2024, where he built the first neutrino-induced nuclear fission detector as a member of the COHERENT Collaboration at Oak Ridge National Laboratory. He joined the group in Winter of 2024 and is working on the RAY and ALPHA experiments to search for the dark matter candidate known as the axion.
ALPHA, RAYtyler.johnson.tj432@yale.eduOffice: WL254C -
Maximiliano Silva-Feaver
Max received his Ph.D. from the University of California San Diego in 2023, where he built the first receiver and developed the data preprocessing pipeline for the Simons Observatory (SO) small aperture telescope (SAT). He joined Yale as a Mossman Postdoctoral Fellow in September 2023, where he leads electronics development for axion dark matter searches. His work focuses on extending quantum-limited detection to higher frequencies through both HAYSTAC’s squeezed-state receiver and ALPHA’s novel metamaterial approach. He maintains active involvement in CMB cosmology through analysis of the SO SAT’s data, which will test inflationary models and constrain fundamental physics.
HAYSTAC, ALPHA, SOmaximiliano.silva-feaver@yale.eduOffice: WLC-258 -
Jorge Torres
Jorge received his Ph.D. from The Ohio State University in Experimental Astroparticle Physics in Summer 2021, where he worked on data analysis and simulation for the Askaryan Radio Array (ARA) experiment. He joined the the group in July 2021, and currently he is working on the CUORE/CUPID experiments, which search for neutrinoless double beta decay. Outside of physics, Jorge enjoys photography and salsa dancing.
CUORE/CUPIDjorge.torresespinosa@yale.eduOffice:WLC 254D
Graduate Students
-
Xiran Bai
Xiran did her undergraduate in the University of Wisconsin - Madison, and her master’s at the University of Michigan. She is now a rising second-year Ph.D. student in Physics at Yale. She joined the Maruyama Group in Feb 2021, where she works on the HAYSTAC experiment searching for Dark Matter axions. In her free time, she likes to read and play the piano.
HAYSTACxiran.bai@yale.eduOffice: WLC 258 -
Eleanor Graham
Eleanor graduated from the Massachusetts Institute of Technology in the spring of 2020 with a B.S. in Physics. She started at Yale in fall 2021 after a gap year as a software engineer at MathWorks. Eleanor primarily works on the RAY experiment, investigating the possibility of using Rydberg atoms for single-photon detection in axion experiments. Outside of the lab, Eleanor enjoys reading, rock climbing, crossword puzzles, and spending time with her cat.
RAY/HAYSTACeleanor.graham@yale.eduOffice: WLC 254A -
Sophia Hollick
Sophia completed her BS in Physics at Rensselaer Polytechnic Institute in 2020 and began Yale’s Physics PhD program Fall 2020. She is currently working with the Maruyama group on COSINE-100, a dark matter direct detection experiment aimed at studying WIMPs. In her free time, Sophia likes gaming, music, and playing with her dog.
COSINE-100sophia.hollick@yale.eduOffice: WLC 258 -
Claire Laffan
Claire graduated from Yale University with a B.S. in Intensive Physics in 2021. Throughout her undergraduate years, she worked on the Mu2e experiment at Fermilab and the ATLAS experiment at CERN with Professor Demers. She spent her gap year doing research and lab management with Professor Maruyama’s HAYSTAC group before being accepting into the physics Ph.D. programs in the fall. She continues to pursue particle physics as a Yale graduate student. In her spare time, Claire loves making pottery, reading sci-fi and fantasy books, playing video games, and spending time outdoors.
HAYSTACclaire.laffan@yale.eduOffice: WLC 258ph: (336) 508-1512 -
Ridge Liu
Ridge graduated from Rice University in 2018 with a B.S. in Physics and Mathematics. He joined the Maruyama Lab and CUORE in the summer of 2020, and has been working primarily on studying the detector response to seismic activity. Outside of work, he spends his time reading, swimming, and trying to cook.
CUOREridge.liu@yale.eduOffice: WLC 254 -
Maya Moore
Maya graduated from the University of California, Berkeley in 2021 with a B.A. in Physics. She joined Yale’s CUORE/CUPID group in the fall of 2022 and has been working on developing a muon veto system for CUPID and understanding low energy backgrounds in CUORE. Outside of the lab, Maya enjoys running, listening to live music, and reading.
CUORE/CUPIDmaya.moore@yale.eduOffice: WLC 254
Undergraduate Students
-
Kelly Dai
Kelly is an undergraduate sophomore at Yale majoring in Physics. She joined the Maruyama Group in January of 2024, where she works on the ALPHA experiment. Outside of physics, Kelly enjoys watching documentaries, listening to new music, and going to the gym.
ALPHAkelly.dai@yale.eduExpected Graduation Date:May 2027
Administrative Assistant
-
Ayanna Williamsmaruyama_admin@mailman.yale.eduOffice:Ph:
Research and Development
-
James Wilhelmi
James officially joined Wright lab in June 2020, but has been deeply involved with the lab community since May 2017 during the construction of PROSPECT. Since then he has expanded his involvment in the lab and provides engineering/technical support for the APC, ATLAS, CUORE, CUPID, DUNE, MAD, and Project 8, as well as the next iteration of PROSPECT (PROSPECT-II). In his dwindling spare time he is working on refinishing his log cabin. When he can he enjoys hiking and disappearing into the woods.
ATLAS, CUORE, CUPID, DUNE, MAD, Project 8, PROSPECTjames.wilhelmi@yale.eduOffice: WL-241ph: 1(203) 436-8873
Past Members
-
Samantha Pagan
Graduate Student, CUORE, PhD 2024
Current Position:
Thesis: Physics at the keV Energy Scale with CUORE: A Search for Solar Axions
-
Din Amar Tolj
Undergraduate, CUORE, B.S. 2025Current Position: Current Position:
Current Position:
-
Sabrina Zacarias
Postdoc, RAY, 2023 – 2024Current Position: see LinkedIn
-
Sumita Ghosh
Graduate Student, RAY, PhD 2023
Past Positions: Postdoc, MIT
Current Position: Postdoc, LLNL
Thesis: Harnessing HAYSTAC for Hidden Photons and Advancing Rydberg Atom-Based Axion Detection
-
Pranava Teja Surukuchi
Postdoc, CUORE, Project 8, 2020–2023
-
Yuqi Zhu
Postdoc, RAY, 2021-2023
Current Position: Postdoc, Stanford, Gratta Group
-
Sophia Getz
Undergraduate, RAY
-
Annie Giman
Undergrad, RAY, B.S. 2024
Current Position: Graduate Student, Johns Hopkins
-
John Gunderson
Undergraduate, COSINE-100
-
Jay Hyun Jo
Postdoc, DM-Ice, DUNE, 2015 - 2022Current Position: Research Scientist at BNL
-
William Thompson
Graduate Student, DM-Ice/COSINE-100, Ph.D. 2022Current Position: Postdoc at Harvard University
Thesis: Searching for Dark Matter with COSINE-100
-
Huaijin (Jean) Wang
Undergraduate student, HAYSTAC, BS 2022Current Position: Gaduate student at Stanford University
-
Estella Barbosa de Souza
Graduate Student, DM-Ice/COSINE-100, Ph.D. in 2020
Current Position: Consultant at Boston Consulting Group
-
Kelly Backes
Graduate Student, HAYSTAC, Ph.D. in 2021
Current Position: MITRE Corporation
Thesis: A Quantum Enhanced Search for Dark Matter Axions
-
Caitlin Gainey
Undergraduate, CUORE/CUPID
Current Position: Undergraduate at Yale University
-
Gabe Hoshino
Undergraduate, HAYSTAC/Single Photon, CUORE/CUPID, B.S. 2021
Current Position: Graduate Student at University of Chicago
-
Daniel Heimsoth
Undergraduate, COSINE-100, B.S. 2020
-
Neal Ma
Undergraduate, CUORE/CUPID, 2019 - 2020Current Position: Current Position: Undergraduate at Yale University
-
Liz Ruddy
Undergraduate, COSINE-100, B.S. 2020
Current Position: Graduate Student at University of Colorado Boulder
-
Danielle Speller
Postdoc, CUORE & HAYSTAC 2017 - 2020
Current Position: Pofessor at Johns Hopkins
-
Andrew Zheng
Undergraduate, RAY
Current Position: Undergraduate at Yale University
-
Byron Daniel
Undergraduate Student, CUORE, B.S. 2019Current Position: Graduate Student, Carnegie Mellon
-
Christopher Davis
Graduate Student, CUORE, Ph.D. in 2019
Current Position: Senior Data Scientist at CarMax
-
Katherine Melbourne
Undergraduate Student, CUORE, B.S. 2019Current Position: Associate Systems Engineer at Ball Aerospace
-
Cady van Assendelft
Undergraduate Student, HAYSTAC, B.S. 2019Current Position: Graduate Student, Stanford University
-
Jeremy Cushman
Graduate Student at Yale, PhD in 2018Current Position: Algorithms R&D for autonomous vehicle navigation at Optimus Ride
Thesis: A search for tellurium-130 neutrinoless double-beta decay with CUORE
-
Surya Dutta
Undergraduate, CUORE, B.S. 2018Current Position: Data Science Fellow at Census Bureau, (UC Berkeley, Physics PhD Program from 2019) Current Position:
-
Tom Wise
Research Scientist, CUORE, DM-Ice, PROSPECTCurrent Position: Retired in 2018 Current Position:
Current Position:
-
Lauren Chambers
Undergraduate, DM-Ice, B.S. 2017
Current Position: Research and Instrumentation Analyst, Space Telescope Science Institute
-
Kyungeun Lim
Postdoc, CUORE, COSINE, 2013 - 2017Current Position: Senior Lead Data Scientist, NBCUniversal Current Position:
-
Ivy Wanta
Undergraduate, CUORE, B.S. 2017
Current Position:
-
Nikita Dutta
Undergraduate, DM-Ice, B.S. 2016Current Position: Graduate Student Princeton University
-
Ke Han
Scientist while at Yale, 2014 - 2016Current Position: Associate Professor Shanghai Jiao Tong University
-
Walter Pettus
PhD in 2015, Postdoc 2015 - 2016, DM-IceCurrent Position: Faculty Assistant Professor, University of Indiana
e-mail: pettus@indiana.edu
faculty profile: https://physics.indiana.edu/about/directory/all-faculty-scientists/pettus-walter.html
Thesis: Cosmogenic Activation in NaI Detectors for Dark Matter Searches
-
Zack Pierpoint
PhD 2010 - 2016, DM-Ice
-
Field Rogers
Undergraduate & Post Graduate, DM-Ice 2015 - 2016Current Position: PhD Student, MIT Physics
-
Tomas Albergo
Undergrad Research, CUORE, Spring 2015
-
Antonia Hubbard
PhD in 2015, DM-IceCurrent Position: Post Doc, Northwestern, Figueroa Group
ahubbard@northwestern.edu
Thesis: Muon-Induced Backgrounds in the DM-Ice17 NaI(Tl) Dark Matter Detector -
Matthew Kauer
Postdoc 2012-2015Current Position: Research Scientist, UW-Madison on IceCube
-
Bethany Reilly
PhD in 2014, DM-IceCurrent Position: Lecturer, UW-Fox Valley
Thesis: Background Simulation and Verification for DM-Ice
-
Benedikt Riedel
PhD in 2014, IceCubeCurrent Position: Postdoc, University of Alberta
Thesis: Modeling and Understanding Supernova Signals in the IceCube Neutrino Observatory
-
Aleks Cianciara
Undergraduate Student, DM-Ice, 2013Current Position: Undergraduate Student University of Wisconsin-Madison
-
Chris Hilgenberg
Undergraduate Student, DM-Ice, 2013Current Position: PhD Student, Physics Colorado State