THOMAS HEMMICK
Distinguished Teaching Professor
Physics and Astronomy
thomas.hemmick@stonybrook.edu | (631)-632-8111, Physics C-107 | (631)-632-8150, Physics S-200
Research Group Website
Curriculum Vitae. (Last updated: 2024 Feb 22)

Biography
Thomas Hemmick holds the title Distinguished Teaching Professor at Stony Brook University. He got his Ph.D. from the University of Rochester, in 1989, working with the Tandem Accelerator Mass Spectrometry Group on multi-disciplinary work touching geology, hydrology, anthropology, peripheral participation in the dating of the Shroud of Turin, and searches for anomalous isotopes of low Z nuclei which would be a natural consequence of any strongly or electromagnetically interacting, stable, and undiscovered particle (technicolor, H-dibaryon, lightest SUSY particle, …). He switched to studies to Relativistic Heavy Ion Collisions at both the AGS and RHIC at the formative stage of those programs. He was named Fellow of the American Physical Society in 2021, with a citation for his development of detectors for nuclear physics, mentoring of students, and advancements in the field of Relativistic Heavy Ion Collisions. He co-chaired the Particle-ID working group that developed the concepts for particle ID at the future electron-ion collider (EIC). He holds numerous teaching awards and has developed both the online lecture and lab classes for introductory physics.

Research Statement
Most of my career, my researched has focused on the studies of the quark-gluon plasma. I am a founding member of the PHENIX experiment at RHIC, wherein I lead the construction of the focal plane (5120 PMTs) of the PHENIX RICH, the PHENIX Drift Chambers (principle tracking detectors), the PHENIX Hadron Blind Detector (the first CsI-based GEM detector and record holder for the brightest Cherenkov detector ever built with N 0 =325cm -1 ), the PHENIX MPC-EX (among the earliest preshower detectors with pixelated silicon sampling), and most recently the Time Projection Chamber (TPC) for the sPHENIX experiment which had an engineering run in 2023 and anticipates first physics in 2024. My interests have varied over the years from thermodynamics and hadrochemistry of the QGP (highlighted by a measurement of the Delta resonance at the AGS), to penetrating probes through the e+/e- channel to access the initial temperature of the QGP. In sPHENIX, my interests have moved to a measurement of the Debye screen radius of the plasma, accessible through measurements of the three Upsilon states (made possible for the first time by the high precision Time Projection Chamber). All these studies have a common theme: the emergent properties of strongly interacting bulk matter. Emergent properties of the electromagnetic interaction face us every day in processes as simple as the hydrodynamics of pouring water into a glass to the optics of the lens formed by the filled glass. Similarly the Quark-Gluon Plasma reveals the equally beautiful emergent properties of the strong interaction.

In the not-so-far future, the RHIC facility will be transformed into the Electron-Ion Collider. My research interests will continue to pursue emergent properties of the strong interaction, but change from hot nuclear matter to cold nuclear matter. The expected but not-yet-discovered state called Color-Glass Condensate promises to define a field as rich and exciting as has been the studies of the Quark-Gluon Plasma. My choice of detector technologies to develop for EIC targets the low-x investigation of low-x gluons in a large nucleus, which promises to reveal the existence and properties of the CGC.