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Oscilloscope traces showing pulses from a) meson, b) antiproton, c) accidental. Photograph taken October 19, 1955. Bevatron-978. ZN-1393

Digital Preservation File Name and Format: 434-LB-6-XBD201310-04115.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Construction of new type meson cave shielding for 184-inch cyclotron. Photo taken 6/29/1955. 184"-1323 Principal Investigator/Project: Analog Conversion Project

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

New type meson cave shielding for 184-inch cyclotron. Photo taken 6/29/1955. 184"-1317 Principal Investigator/Project: Analog Conversion Project

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Construction of new type meson cave shielding for 184-inch cyclotron. Photo taken 6/29/1955. 184"-1327 Principal Investigator/Project: Analog Conversion Project

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Construction of new type meson cave shielding for 184-inch cyclotron. Photo taken 6/29/1955. 184"-1319 Principal Investigator/Project: Analog Conversion Project

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

X-rays from meson pi-atoms associated with Emilio Segre, with H. Smith. Photograph taken October 18, 1956. Bevatron-1168

Digital Preservation File Name and Format: 434-LB-6-XBD201304-02294.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

X-rays from meson pi-atoms associated with Emilio Segre, with H. Smith. Photograph taken October 18, 1956. Bevatron-1170

Digital Preservation File Name and Format: 434-LB-6-XBD201304-02295.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

A figure showing K-negative scattering and interaction. A K-negative meson scatters on one proton and then interacts with another proton to form a sigma-positive and a pi-negative. The sigma positive decays to a pi-positive and a neutron. Photograph taken October 29, 1956. Bubble Chamber-112B. See also XBD201210-01202.TIF

Digital Preservation File Name and Format: 434-LB-6-XBD201210-01203.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Sagane magnet, K meson setup. Photograph taken February 24, 1956. Bevatron-1023

Digital Preservation File Name and Format: 434-LB-6-XBD201310-04183.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

184-inch cyclotron, view showing magnet and meson cave. Photo taken 11/27/1956. 184"-1484 Principal Investigator/Project: Analog Conversion Project

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

184-inch cyclotron, meson target assembly main drive assembly. Photo taken 8/08//1957. 184"-1513 Principal Investigator/Project: Analog Conversion Project

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

K meson scattering. Patent release 10/24/1958. Photograph taken August 26, 1958. Bevatron-1588

Digital Preservation File Name and Format: 434-LB-6-XBD201304-02521.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Emilio Segre (left) and Clyde Weigand in front of the meson antiproton antineutron display. Photograph taken April 1958

Digital Preservation File Name and Format: 434-LB-5-XBD201208-00555.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

K meson scattering. Patent release 10/24/1958. Photograph taken August 26, 1958. Bevatron-1587

Digital Preservation File Name and Format: 434-LB-6-XBD201304-02520.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

K-plus meson experiment. Photograph taken June 13, 1958. Bevatron-1565

Digital Preservation File Name and Format: 434-LB-6-XBD201304-02497.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

K meson scattering. Patent release 10/24/1958. Photograph taken August 26, 1958. Bevatron-1591

Digital Preservation File Name and Format: 434-LB-6-XBD201304-02522.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Physics graduate students Tommy Elioff (left) and Louis Agnew (right) placing a beryllium absorber in the first focus of the antiproton magnetic channel to partially separate antiprotons from the meson background, taken February 1958. Morgue 1958-29 (P-2) [Photographer: Donald Cooksey]

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Three anti-kaon meson decays in 15-inch hydrogen bubble chamber. Photograph taken January 15, 1959. Bubble Chamber-679

Digital Preservation File Name and Format: 434-LB-6-XBD201211-01531.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Forty high school science teachers joined the Laboratory staff this summer in a teacher-training program. The program was initiated to stimulate the teachers so that they might improve and bring up to date their teaching curricula. Left to right, Dr. Wilson Powell(Physics Research Group Leader), Bill Baum (Alhambra High School, Martinez), and Anthony Rinaldi (Burbank Junior High School, Berkeley). Dr. Powell explains to the teachers a template showing the way a pi meson looks in the propane bubble chamber. Morgue 1959-56 (P-1) [Photographer: Donald Cooksey]

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Press conference announcing the discovery of the first solid experimantal evidence for the existance of the omega meson resonance. Left to right: M.L. Stevenson, Bogdan Maglic, Luis Alvarez, Arthur Rosenfeld, and Edwin McMillan, taken August 30, 1961. Morgue 1961-17 (P-7) [Photographer: Donald Cooksey]

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Press conference announcing the discovery of the first solid experimantal evidence for the existance of the omega meson resonance. Left to right: M.L. Stevenson (hidden), Bogdan Maglic, Luis Alvarez, and Arthur. Rosenfeld (standing), taken August 30, 1961. Morgue 1961-17 (P-1) [Photographer: Donald Cooksey]

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Press conference announcing the discovery of the first solid experimantal evidence for the existance of the omega meson resonance. Left to right along the blackboard: M.L. Stevenson (standing), Bogdan Maglic, Luis Alvarez, and Arthur. Rosenfeld, taken August 30, 1961. Morgue 1961-17 (P-5) [Photographer: Donald Cooksey]

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Press conference announcing the discovery of the first solid experimantal evidence for the existance of the omega meson resonance, taken August 30, 1961. Art Rosenfeld at blackboard, M.L. Stevenson at left with back to camera, Bogdan Maglich and Luis Alvarez seated center, and Edwin McMillan far right. Morgue 1961-17 (P-8) [Photographer: Donald Cooksey]

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Portrait of Bogdan Maglich who with Luis Alvarez, Arthur Rosenfeld, and M.L. Stevenson discovered the first solid experimantal evidence for the existance of the omega meson resonance. Photo taken September 27, 1961. Morgue 1961-19 (P-2) [Photographer: Donald Cooksey]

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Bubble chamber event. Antiproton annihilation, four charged pions, neutral pion consistent with the production of an omega meson. Patent release 10/5/1962. Image undated. Bubble Chamber-1041A

Digital Preservation File Name and Format: 434-LB-6-XBD9609-04753.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Dr. Crowe Pi Form Factor Experiment setup inside meson cave, 184-inch cyclotron. Photo by Doug McWilliams 7/21/1966.184"-1679 Principal Investigator/Project: Analog Conversion Project

Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Mu meson scattering experiment. Photograph taken January 18, 1960. Bevatron-1969

Digital Preservation File Name and Format: 434-LB-6-XBD201305-02811.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Mu meson scattering experiment. Patent release 5/12/1960. Photograph taken January 18, 1960. Bevatron-1971

Digital Preservation File Name and Format: 434-LB-6-XBD201305-02812.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Mu meson scattering experiment. Photograph taken January 18, 1960. Bevatron-1972

Digital Preservation File Name and Format: 434-LB-6-XBD201305-02813.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Mu meson scattering experiment. Photograph taken January 18, 1960. Bevatron-1973

Digital Preservation File Name and Format: 434-LB-6-XBD201305-02814.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab

Bubble chamber event. Muonic decay of a neutral k meson with inset diagram. Photograph undated. Bubble Chamber-1240A - Photographer: George Kagawa

Digital Preservation File Name and Format: 434-LB-6-XBD201211-01674.TIF Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab