Bruno Touschek: particle physicist and father of the electron-positron collider

TL;DR

This paper reviews Bruno Touschek's life, highlighting his pivotal role in conceptualizing and building the first electron-positron collider, and discusses his scientific contributions and collaborations in particle physics.

Contribution

It introduces new insights into Touschek's early life, unpublished correspondence, and his specific role in developing the first electron-positron storage ring, AdA.

Findings

Touschek proposed and led the construction of AdA, the first electron-positron collider.

His work influenced high-energy physics experiments and theoretical developments.

Unpublished documents reveal new details about his collaborations and scientific ideas.

Abstract

This article gives a brief outline of the life and works of the Austrian physicist Bruno Touschek, who conceived, proposed and, 50 years ago, brought to completion the construction of AdA, the first electron-positron storage ring. The events which led to the approval of the AdA pro ject and the Franco-Italian collaboration which con- firmed the feasibility of electron-positron storage rings will be recalled. We shall illustrate Bruno Touschek's formation both as a theoretical physicist and as an expert in particle accelerators during the period be- tween the time he had to leave the Vienna Staat Gymnasium in 1938, because of his Jewish origin from the maternal side, until he arrived in Italy in the early 1950s and, in 1960, proposed to build AdA, in Frascati. The events which led to Touschek's collaboration with Rolf Wideroe in the construction of the first European betatron will be de- scribed. The article will make use of a number of unpublished as well as previously unknown documents, which include an early correspon- dence with Arnold Sommerfeld and Bruno Touschek's letters to his family in Vienna from Italy, Germany and Great Britain. The impact of Touschek's work on students and collaborators from University of Rome will be illustrated through his work on QED infrared radiative corrections to high energy e+e- experiments and the book Meccanica Statistica.