Spark chambers

Interviewed by
David Zierler
Interview date
Location
Teleconference
Abstract

Interview with Stephen Williams, formerly Assistant Research Director of SLAC. Williams describes his connections with SLAC since his retirement in 2011, and he recounts his childhood in Michigan and his early fascination with electronics. He explains his reasons for attending the University of Michigan, where he majored in physics and where he determined he would go to UC Berkeley for graduate school to work with Victor Perez-Mendez on magneto-strictive readouts for wire spark chambers. Williams discusses his postdoctoral work at SLAC working with David Leith, and his subsequent research on head coils and software in nuclear medicine at UCSF. He describes the research mission of Group B at SLAC and the Cherenkov technique, and the opportunities that led him his management position as director of engineering and as an engineering manager for Diasonics. Williams describes the change in leadership from Burt Richter to Jonathan Dorfan, and the circumstances of becoming as Acting Research Director. He discusses the safety protocols that needed to be improved in consultation with the DOE, and at the end of the interview, Williams reflects on the ways SLAC has stayed true to Panofsky’s original vision.

Interviewed by
David Zierler
Interview date
Location
Video conference
Abstract

Interview with Wit Busza, Francis L. Friedman Professor of Physics Emeritus at MIT. He recounts his birth in Romania as his family was escaping Poland at the start of World War II, and his family's subsequent moves to Cyprus and then to British Palestine, where he lived until he was seven, until the family moved to England. He describes the charitable circumstances that allowed him to go to Catholic boarding school, his early interests in science, and the opportunities that led to his undergraduate education in physics at University College in London, where he stayed on for his PhD while doing experiments at CERN working with Franz Heymann. Busza describes the development of spark chambers following the advances allowed by bubble chambers, and his thesis research using the Chew-Low extrapolation to calculate the probability that the proton is a proton plus a pi-zero. He describes meeting Martin Perl and the opportunities that led to his postdoctoral position at SLAC, which he describes in the late 1960s as being full of brilliant people doing the most exciting physics and where he focused on rho proton cross-sections. Busza describes meeting Sam Ting at SLAC which led to Busza's faculty appointment at MIT, where he discovered his talent for teaching. He discusses the complications associated with the discovery of the J/psi and his developing interest in relativistic heavy ion physics, the E178 project at Fermilab to examine what happens when high energy hadrons collide, and the E665 experiment to study quark propagation through nuclear matter. Busza describes the import of the RHIC and PHOBOS collaborations, and he discusses his return to SLAC to focus on WIC and SLD. He describes the global impact of the LHC and CERN, and his satisfaction at being a part of what the DOE called the best nuclear physics group in the country. In the last part of the interview, Busza reflects on the modern advances in atomic and condensed matter physics, which were inconceivable for him to imagine at the beginning of his career, he describes the considerations leading to his retirement, and why, if could re-live his career, he would think harder about being a theorist.