Linear accelerators

Interview with William Herrmannsfeldt, Staff Physicist at SLAC. Herrmannsfeldt recounts his German heritage, his upbringing in Ohio, and his early interests in physics which he pursued as an undergraduate at Miami University. He discusses his graduate work on beta decay and nuclear physics at the University of Illinois, under the direction of James Allen, and he describes his postdoctoral appointment at Los Alamos where he made detectors for bomb tests. Herrmannsfeldt explains the connection between his work at Los Alamos on electron optics and his initial research at SLAC, and he describes his work on linear accelerators. He describes his tenure as Secretary of the Advanced Development Group and his role at the AEC to concentrate on accelerator physics for Fermilab. Herrmannsfeldt explains the decision to move ahead with the PEP project and his LINAC work at Berkeley. Herrmannsfeldt explains the relevance of this research to nuclear fusion, and he describes some of the technical challenges in building the superconducting RF system. At the end of the interview, Herrmannsfeldt conveys the sense of fun he felt in learning new technological systems, the inherent challenges of beam dynamics, and he reflects on how SLAC has changed since its inception. 

Interview with Charles Prescott, Professor Emeritus at SLAC. Prescott discusses his activities in physics since retiring in 2006, and he conveys his interest in the muon anomaly results from the g-2 experiment at Fermilab in light of his longstanding work in spin physics. He offers a wide perspective on the creation of the Standard Model and when the field began to search for new physics beyond it, and he recounts his childhood in Oklahoma. Prescott discusses his undergraduate education at Rice and his interests in physics, and he describes the opportunities that led to his graduate admission to Caltech, where Bob Walker advised his thesis research on the eta meson. Prescott conveys the importance of Steve Weinberg’s work on particle theory in the late 1960s, and he describes the circumstances that led him to SLAC after a brief appointment at UC Santa Cruz. He describes joining Group A, which was led by Dick Taylor, and how he organized the first parity violation experiment. He discusses the E95 and E122 experiments, and he describes early advances in understanding the nucleon sub-structure. Prescott explains his proposal to add polarized beams to the SLC and a new drift chamber for the SLD, and he discusses the origins of the DELCO collaboration. He describes his tenure as leader of Group A and then as Associate Director of the Research Division, and as chair of the International Spin Physics symposium. Prescott discusses his work on SLAC’s Enriched Xenon Observatory, and he prognosticates the poor political and budgetary prospects of future linear accelerators. At the end of the interview, Prescott reflects on receiving the Panofsky Prize, and he segments SLAC into its constituent historical eras as defined by the dominant experiments over the decades.

Interview with Melissa Franklin, Mallinckrodt Professor of Physics at Harvard. Franklin notes her affiliation with the ATLAS experiment, and she discusses the importance of remote data analysis from CERN which is possible in the current mandates of remote work. Franklin recounts her childhood in Edmonton, then Vancouver, and then Toronto, and she discusses the alternative educational experiences she pursued through high school. She describes her undergraduate experience at the University of Toronto and her decision to study physics and the summers she spent at Fermilab making a tagged photon beam. Franklin discusses her graduate work at Stanford, where she was motivated to work at SLAC with Martin Perl and then Gary Feldman. She describes her postdoctoral appointment at Berkeley working on an experiment at Fermilab, and her decision to join the faculty at the University of Illinois before accepting an offer to become a junior fellow and then an assistant professor at Harvard. Franklin describes her work on the CDF at Fermilab and measuring the mass of the W and the Z, and she surveys her style as a mentor to graduate students. She explains how she became involved with ATLAS and her interest in fundamental questions like the possible coupling of the Higgs to dark matter. Franklin describes her efforts to make the Harvard physics department a more caring place for postdocs, graduate students and support staff, and why she believes physics education research needs to be more rigorously incorporated at the department level. At the end of the interview, Franklin reflects on the significance of the discovery of the top quark, and she conveys her ambition to build a very small accelerator with a very high energy.

In this interview, David Zierler, Oral Historian for AIP, interviews Douglas Scalapino, Research Professor at UC Santa Barbara. Scalapino recounts his childhood in San Francisco and then Scarsdale, New York, he discusses the circumstances leading to his admission to Yale, and he describes how he settled on physics as an undergraduate after getting to know Professor Larry Biedenharn. Scalapino discusses his graduate research at Stanford, where he worked under the direction of Mitch Weissbluth conducting radiation chemistry using a small linear accelerator to see free radicals created by the electron beam. He describes his burgeoning interests in electronic spin resonance and magnetic resonance. Scalapino explains the circumstances leading to his decision to finish his thesis work with Ed Jaynes at Washington University while working for Kane Engineering. He discusses his postdoctoral research at the University of Pennsylvania with Bob Schrieffer and Henry Primakoff. He discusses his work at Bell Labs, where he worked with Phil Anderson, and he describes his first faculty position at Penn. Scalapino describes how UCSB recruited him, and he explains how his hire was part of a broader effort to raise the stature of the physics department. He recounts the virtues of working in a small department, where opportunities were available to collaborate with Bob Sugar and Ray Sawyer on high-energy physics, and Jim Hartle on astrophysics and general relativity. Scalapino describes the origins of the Institute of Theoretical Physics and how the National Science Foundation came to support UCSB’s proposal. He reflects on how the ITP has benefited the department of physics over the years, and he provides an overview of his research agenda at UCSB, which includes his contributions to the quantum Monte Carlo project and high-Tc and unconventional superconductors. At the end of the interview, Scalapino discusses his current interests in the numerical simulation of quantum many body systems.

In this interview Donald Geesaman discusses topics such as: Argonne National Laboratory; Dirk Walecka; hadron physics; Roy Holt; Herman Feshbach; Stanford Linear Accelerator Center (SLAC); Nuclear Science Advisory Committee (NSAC); Bernard Mecking; Continuous Electron Beam Accelerator Facility (CEBAF); Gerry Garvey; quarks; Fermi National Accelerator Laboratory (Fermilab); Jefferson Laboratory; nuclear physics; University of Illinois at Urbana-Champaign; Larry Cardman; Keith Baker; relativistic heavy ion (RHIC) experiments.

Youth and early education; undergraduate at Amherst; graduate work at MIT. Work with various laboratories: MIT, Stanford Linear Accelerator Center, and Fermilab. Involvement in JASON, ca. 1960-1973: projects, question of impact. Involvement with Union of Concerned Scientists, from 1969: creation and main projects; nuclear energy; nuclear arms control; achievements.

Youth and early education; undergraduate at Amherst; graduate work at MIT. Work with various laboratories: MIT, Stanford Linear Accelerator Center, and Fermilab. Involvement in JASON, ca. 1960-1973: projects, question of impact. Involvement with Union of Concerned Scientists, from 1969: creation and main projects; nuclear energy; nuclear arms control; achievements.

H. Frederick Dylla discusses topics such as: ruby laser; Bell Laboratories; RCA Engineering Research Center, Canton, New Jersey; Edgerton, Germeshausen, and Grier, Inc. (EG&G); Harold Edgerton; Massachusetts Institute of Technology (MIT); Franklin Instiutte; Richard Feynman; Mark Zemansky; Princeton University; John King; molecular beams; atomic clocks; bachelors work on acoustics; masters research on low temperature physics; doctoral research on surface physics; Ted Madey; John Yates; Jim Murday; Princeton Plasma Physics Laboratory; tokamaks; Sandia National Laboratories; Ray Weiss; Laser Interferometer Gravitational-Wave Observatory (LIGO); benefits of professional societies; Manfred Kaminsky; Argonne National Laboratory; AVS; Journal of Vacuum Science and Technology; National Bureau of Standards (NBS); National Institute for Standards and Technology (NIST); Paul Redhead; National Research Council (NRC), Canada; Dennis Manos; College of William and Mary; John Coburn; Harold Winters; Continuous Electron Beam Accelerator Facility (CEBAF); Southeastern Universities Research Association (SURA); George Neil; Jefferson Laboratory; free electron lasers; Star Wars program; electron beam accelerator; linear accelerator (LINAC); Rey Whetten; American Institute of Physics.