George Kalmus

His brother, Peter Kalmus, is another noted British particle physicist. A press release from the Particle Physics and Astronomy Research Council (PPARC) in 2002 commented that "A particle physicist in the family is a rare occurrence. That there should be two and both be leaders of the field is even more unusual, yet Professors Peter and George Kalmus have achieved this."

Kalmus formally retired from the Rutherford Appleton Laboratory in 2000, but remains an Honorary Scientist there.

In 1998, Kalmus took sabbatical leave from the Rutherford Appleton Laboratory and joined the NA48 Experiment at CERN whose prime purpose was to measure "direct" CP violation in Kzero decays. Since RAL was not a formal participant in the experiment, Kalmus joined the group from Cambridge led by Dr Tom White, who together with a small group from Edinburgh were the British members of the collaboration.

Kalmus was elected a Fellow of the Royal Society in 1988 and made a CBE in 2000. He is currently an Honorary Scientist, Rutherford Appleton Laboratory

Kalmus was Associate Director, 1986–94 and Director of Particle Physics, 1994–97 at the Rutherford Appleton Laboratory.

In 1986, Kalmus was asked to become the Director of Particle Physics and Head of the Particle Physics Department at the Rutherford Appleton Laboratory, remaining in that position and capacity until 1997. This work took him away from much of the direct research participation, but established Kalmus as a highly influential figure nationally and internationally.

He was Visiting Professor, Physics and Astronomy Department, 1984–2000, University College London and has been a Fellow there since 1998.

This was followed by an experiment he proposed which ran between 1979 and 1982 to measure the lifetimes of the charged and neutral charmed mesons using facilities at SLAC, as a collaboration with groups from Birmingham under Derek Colley, Imperial College under Peter Dornan, and groups from the US and Japan. This was to be Kalmus’ last bubble chamber experiment. The bubble chamber technique was increasingly having to be extended and enhanced in order to produce competitive results. By the mid 1980s all bubble chambers had been closed. Kalmus was nevertheless a significant practitioner for much of the thirty-year period when the bubble chamber was the dominant technique in the field.

In 1978, based on the success of the track sensitive target neutrino programme spearheaded by Wilbur Venus, Kalmus proposed an experiment using this equipment, but instead of a neutrino beam, used a 70 GeV negative pion beam. The idea being that the primary interaction would take place in the hydrogen, and the reaction products would then traverse the surrounding Neon-Hydrogen mixture and electrons would be easily identified. This experiment was approved as a collaboration between the Rutherford Appleton Laboratory group and groups from Glasgow, Bologna, Saclay and Torino. The results strengthened the evidence for single electrons apparently emerging from primary interaction vertices.

In 1971, Kalmus became the head of the bubble chamber group at the Rutherford Laboratory (subsequently the Rutherford Appleton Laboratory from 1979 onwards). This was a large group, and Kalmus became responsible for leading its research direction. At that time, The Rutherford Laboratory housed a 7 GeV weak focusing Proton Synchrotron, and an accelerator very similar to the Bevatron used at the Lawrence Radiation Laboratory in Berkeley. The CERN proton synchrotron, a 25 GeV strong focusing machine, was already in operation and it was clear that most experiments, including those at low energies using secondary beams, were better performed at CERN. Kalmus organised the Rutherford Laboratory group into three areas, led by Colin Fisher, Wilbur Venus and by Kalmus himself. All three research streams had very strong UK and International collaborations. The groups were involved in a number of experiments using the CERN proton synchrotron (PS) and later the CERN Super Proton Synchrotron (SPS)(see NA26, WA24, WA30, WA59 in particular in the List of Super Proton Synchrotron experiments).

In 1970, Kalmus spent a year of sabbatical leave at CERN and there joined the Fidecaro group who were working on a pi+ proton scattering experiment on a polarised proton target using an electronic detector.

In 1962, Kalmus joined the Powell-Birge group at the Lawrence Radiation Laboratory (LRL), initially working on a stopped K+ meson decay exposure in the 30 inch bubble chamber. Apart from a brief return to University College London circa 1964, Kalmus remained at the Lawrence Radiation Laboratory until 1971, participating in a systematic investigation of Kminus proton scattering in the resonance region.

Kalmus went to school first in Hampstead and then in Harpenden, Hertfordshire. From 1945 till 1953 he was at St Albans County Grammar School (later renamed Verulam School). He received his BSc (1956) and PhD (1959) at University College London where he remained for a further three years as a Research Associate. He is now an Honorary Fellow of University College London.

Kalmus was born in Beočin, Yugoslavia, and moved to Britain with his parents and his elder brother Peter Kalmus in 1939. His sister Elsa Joan Kalmus was born in 1945. The family became British Citizens in 1946.

Kalmus' father, Hans Kalmus, was a well-known biologist who worked at University College, London from 1939, officially retiring as Professor in 1973 but continuing there until his death in 1988 at the age of 82.

George Ernest Kalmus, CBE, FRS (born 21 April 1935) is a noted British particle physicist.