Lawrence Berkeley National Laboratory

Interview with Janice Button-Shafer, retired American physicist. Button-Shafer recounts her childhood in the Boston area, where her father worked as an engineer. She recalls the influence of her father on her interests in music, math and physics. Button-Shafer discusses her decision to study Engineering Physics at Cornell University, despite it being very uncommon for women to go into science. She discusses her summer jobs at MIT, Cornell Aeronautical Lab and Oak Ridge, as well as her experience writing for The Cornell Engineer magazine. Button-Shafer recounts her Fulbright Fellowship in Germany at the Max Planck Institute in Gottingen, focusing on neutron physics. She reflects on the political landscape during this time and how it affected science in Europe. Button-Shafer then recounts her decision to attend Berkeley for graduate school where she completed her thesis on parity violation while teaching courses such as quantum mechanics. She describes her research at the time at Lawrence Berkeley Lab and SLAC and discusses her work on thermonuclear energy and fusion reactors. She then turns to her move to University of Massachusetts Amherst and her eventual retirement and continuation of work at SLAC. Button-Shafer also talks about her marriage to mathematician John Shafer and the challenges of raising three children, one of whom battled cancer, during her demanding career as a scientist. Throughout the interview, Button-Shafer shares numerous anecdotes about the struggles of being a woman in a male-dominated field, including the discrimination and misogyny she endured throughout her career. She shares many stories of famous physicists she worked with over the years, including Owen Chamberlain, Emilio Segre, Luis Alvarez, Karl Heinz Beckhurts, and Edward Teller. Button-Shafer also shares her passion for the history of physics and relays many of her favorite historical tidbits involving scientists such as Lise Meitner, Marie Curie, Werner Heisenberg, and others. Her love of chamber music and classical music also comes up throughout the interview, as she reflects on her various musical accomplishments.

Interview with Joachim Stöhr, Professor Emeritus of the Photon Science Department at Stanford and former Associate Laboratory Director at SLAC. Stöhr begins the interview recounting his childhood in Germany, his interest in sports, and his introduction to physics in high school. He discusses his undergraduate studies at Bonn University and his Fulbright scholarship to Washington State University where he studied optical spectroscopy. Stöhr then describes his doctoral studies with Rudolf Mossbauer in Munich, and his subsequent postdoctoral position at Lawrence Berkeley National Laboratory. He recounts his time as a staff scientist at the Stanford Synchrotron Radiation Lightsource (SSRL) before transitioning into a position at Exxon and then IBM. Stöhr describes his return to Stanford and SSRL, working as Deputy Director and then Director. He then talks about accepting the opportunity to become the first director of the Linac Coherent Light Source (LCLS) and the challenges that came with building up a new program. The interview concludes with Stöhr’s reflections on his return to the science after his directorship and his work on a forthcoming book.

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Interview with Steven Chu, former United States Secretary of Energy and current Professor of Physics and Professor of Molecular and Cellular Physiology in the Medical School at Stanford University. Chu begins by taking us through his changing research interests across his time at Berkeley, Bell Labs and Stanford, and then recounts the beginnings of his interest in climate change in the early 2000s. He talks about his work advising companies who are working on climate change solutions such as carbon capture, and he gives an overview of the research and action being taken around renewable energy sources. Chu then goes back in time and recounts the story of his family, starting with his grandfather in China who emphasized education for all his children. Growing up in Nassau County, Chu describes feeling like a “disappointment” in his family because he didn’t go to an Ivy League school and instead completed his undergraduate studies in math and physics at the University of Rochester. Chu discusses his decision to attend Berkeley for grad school and meeting his advisor Eugene Commins, who was working on weak interactions. Then Chu recounts his transition to Bell Labs and describes the laser work going on there at the time, as well as his burgeoning interest in beta decay experiments. He talks about his research surrounding laser cooling and explains his decision to move to Stanford after Bell. Chu remembers his experience winning the Nobel Prize and accepting the position as director of Lawrence Berkeley National Lab. Chu ends the interview with stories from his time as Secretary of Energy under the Obama administration, such as his experiences with the Deepwater Horizon oil spill, setting up the DOE Loan Program Office, and his international work on climate change.

Interview with Naomi Ginsberg, Associate Professor of chemistry and physics at University of California, Berkeley and faculty scientist at Lawrence Berkeley Lab. The interview begins with Ginsberg discussing her multidisciplinary background in science and how she prefers not to draw boundaries between research fields. She talks about how the Covid-19 pandemic has affected her research and the science community in general. Then Ginsberg turns to her childhood in Canada and recalls being a curious child with many interests. She describes her undergraduate studies in engineering at the University of Toronto and her summers of research at the Institute for Biodiagnostics, which is where she became seriously interested in physics. Ginsberg discusses pursuing a PhD at Harvard University under Lene Hau, where she worked on ultraslow light in Bose-Einstein condensates and superfluid dynamics. She then talks about wanting to switch gears toward biophysics and choosing to go to LBL for a post-doc in photosynthesis work. Ginsberg describes accepting her current position at Berkeley and the different cultures between the chemistry and physics departments. Towards the end of the interview, she touches on her DARPA grant for research on organic semiconductors, as well as the advances in technology that have informed and shaped her research over the years. Ginsberg looks back on the many grad students she has mentored and points to open-mindedness and confidence as key characteristics for their success.

Interview with Barry Barish, Linde Professor of Physics Emeritus at Caltech, where he retains a collaboration with LIGO, and Distinguished Professor of Physics at UC Riverside. Barish recounts his childhood in Los Angeles and emphasizes that sports were more important than academics to him growing up. He explains his decision to attend Berkeley as an undergraduate, where his initial major was engineering before he realized that he really loved physics, and where he was advised by Owen Chamberlain. Barish describes the fundamental work being done at the Radiation Lab and how he learned to work the cyclotron. He explains why Fermi became his life-long hero and why he decided to stay at Berkeley for graduate school, even though the school’s general policy required students to pursue their doctoral work elsewhere. Barish describes his graduate research under the direction of Carl Hemholz, and he explains how he developed a relationship with Richard Feynman which led to his postdoc and ultimately, his faculty appointment at Caltech. He discusses how his interest in neutrinos led to his work at Fermilab and why the big question at the time was how to discover the W boson. Barish describes his key interests in magnetic monopoles and neutrino oscillations, and he describes his involvement with the SSC project through a connection with Maury Tigner at Berkeley, which developed over the course of his collaborations with Sam Ting. He explains that his subsequent work with LIGO never would have happened had the SSC been viable, and he describes his early connection as a young student learning general relativity as a connecting point to LIGO. Barish describes his general awareness of what Rai Weiss had been doing prior to 1994 and he relates the state of affairs of LIGO at that point. He conveys the intensity of his involvement from 1994 to 2005 and he describes the skepticism surrounding the entire endeavor and what success would have looked like without any assurance that the experiment would actually detect gravitational waves. Barish describes the road to detection as one of incremental improvements to the instrumentation achieved over several years, including the fundamental advance of active seismic isolation. He narrates the day of the detection, and he surveys the effect that the Nobel Prize has had on the LIGO collaboration and its future prospects. Barish notes the promise that AI offers for the future of LIGO, and he prognosticates the future viability of the ILC. At the end of the interview Barish explains what LIGO has taught us about the universe, and what questions it will allow us to ask in the future as a result of its success. 

Interview with Toichiro Kinoshita, a Japanese-born physicist who is best known for pioneering the value of muon g-2, the anomalous magnetic moment of the muon. Kinoshita describes his education—Daiichi High School, Tokyo University—how he avoided military service during World War II, and meeting and marrying his wife, Masako Matsuoka. He describes his introduction to quantum electrodynamics and renormalization through papers by Dyson and Feynman. His early research also involved work on the C-meson theory developed by Sakata. After the war, Kinoshita came to the United States to the Institute for Advanced Study, then as a postdoc at Columbia in 1954. In 1955 Kinoshita moved to Cornell. He became particularly interested in making calculations to test the theory of quantum electrodynamics. He describes his introduction to computers at Princeton, using von Neumann’s computer. The interview covers how he became interested in calculating g-2 at CERN in 1966, and his subsequent efforts, the first being the sixth order calculation, where the light-by-light diagram enters for the first time. He describes his efforts doing the eighth order calculation, and his collaboration with Makiko Nio, as well as his calculations of the tenth order. Physicists whom he describes more than briefly include Kodaira, Tomonaga, Nambu, and Nio. Near the end, Kinoshita describes the importance of g-2 experiments, and his recent work. 

Interview with Paul Emma, retired and formerly Senior Staff Scientist at SLAC. Emma recounts his childhood in Illinois, and he describes his undergraduate work at Western Washington University in Bellingham. He explains why he left WWU early to accept an opportunity for graduate work at Caltech briefly before accepting a job at Fermilab where he worked in operations on the Main Ring and the Tevatron project. He describes the series of events leading to his work at SLAC, where he worked in operations and design on the LCLS, the SLC, and the NLC. Emma describes his work for the superconducting undulator for Argonne and Lawrence Berkeley Laboratories, and at the end of the interview he discusses his ongoing work on LCLS-II.

Interview with Wick Haxton, professor of physics at UC Berkeley. Haxton recounts his childhood in Santa Cruz and his early interests in math and science. He describes his undergraduate education at the newly created UC Santa Cruz where his initial interest was in mathematics before he was given the advice that he did “mathematics like a physicist.” Haxton discusses his graduate work at Stanford where his original intent was to study general relativity before he connected with Dirk Walecka and Bill Donnelly to focus on nuclear theory and dense nuclear matter. He discusses his postdoctoral research at the University of Mainz where he concentrated on photo-pion physics during the early days of chiral perturbation theory, and he explains the opportunities that led to his next appointment at the LAMPF facility at Los Alamos. Haxton emphasizes the excellence of both his colleagues and the computational capacity at the Lab, and he describes his faculty appointment at Purdue and the solar neutrino experiment he contributed to in Colorado. He explains the opportunities that led to him joining the faculty at the University of Washington where the DOE was about to fund the Institute for Nuclear Theory. Haxton explains the “breakup” between nuclear theory and particle theory and how the INT addressed that. Haxton discusses the opportunities afforded at the INT to engage in nuclear astrophysics and he explains the rise and fall of the Homestake DUSEL project. He explains his decision to go emeritus at UW and to join the faculty at UC Berkeley and to be dual hatted at the Berkeley Lab, and he describes his tenure as department chair. At the end of the interview, Haxton describes his current work organizing the new Physics Frontier Center and the challenges presented by the pandemic, and he credits his formative time as Los Alamos for the diverse research agenda he has pursued throughout his career.

In this interview, David Zierler, Oral Historian for AIP, interviews Marjorie Shapiro, Professor of Physics at UC Berkeley and Faculty Senior Scientist at Lawrence Berkeley National Laboratory. Shapiro describes the value of this dual affiliation and she surveys the current state of play at the LHC and its work on dark matter research, and what physics beyond the Standard Model might look like. She recounts her upbringing in Brooklyn and her father’s work as a medical physicist, and she explains the opportunities that led to her undergraduate admission at Harvard. Shapiro describes her immediate attraction to experimental particle physics and some of the challenges she faced as a woman. She explains her decision to go to Berkeley for graduate school, where the Lab was a specific draw and where she worked under the direction of Dave Nygren, whose group was working on the Time Projection Chamber. Shapiro describes her postdoctoral appointment back at Harvard to work on the CDF collaboration with Roy Schwitters, who was CDF spokesman at the time. She explains the exciting discoveries at Fermilab, her involvement in B physics, and the friendly competition with DZero. Shapiro explains that her first faculty appointment at Harvard was never something that she assumed would be long term, and the circumstances leading to her appointment at Berkeley. She explains Berkeley’s pivot to CERN following the cancellation of the SSC and the trajectory of the ATLAS program to study electroweak symmetry breaking, and she discusses her advisory work on HEPAP. Shapiro narrates the buildup and elation surrounding the discovery of the Higgs and she describes her accomplishments as the first woman to chair the Department of Physics at Berkeley. She discusses her post-Higgs concentration on SUSY and she explains that in addition to pursuing physics beyond the Standard Model and why the LHC data suggests that there remains much to be learned within the Standard Model. At the end of the interview, Shapiro explains why there remains fundamental unanswered questions on CP violation, and she explains why young physicists should pursue their research in the broadest possible way.