LBNL Image Library -- Collection BERKELEY-LAB/ACCELERATORS/BEVATRON

computer control of external Bevatron beam

Image File

97502206

Title

computer control of external Bevatron beam

Description

Remote station of digitized control system is on the roof of the Bevatron's concrete "igloo" of shielding blocks. Don Evans is shown checking electronic connections between the system and the magnet power supplies, which are located here on the igloo roof. The new computer-controlled system runs the 18 magnets that guide the Bevatron beam, plus the main magnet power supply. A three-to-four man crew can now operate the Bevatron. The Bevatron first went into operation in 1954. At that time, it was the largest, most powerful accelerator in the world. It continued to work at the forefront of physics for the next forty years. The Bevatron played the leading role in three of the most important discoveries of particle physics: experimental studies of "strange" particles leading to the discovery of parity nonconservation (the first known example of a lack of symmetry in nature); the discovery of nuclear antimatter (the antiprotons and the antineutron); and the discovery of the "resonances" -- the particle explosion of the 1960's that led to the development of the quark model and the current understanding of the basic nature of matter. In the 1970s, the Bevatron seemed to be nearing the end of its useful career in high-energy physics, and there was talk of shutting it down. Nevertheless, it was given a productive new lease on life through the invention of the Bevalac, in which the Bevatron was linked to the SuperHILAC linear accelerator. Nuclei begin their journey in the SuperHILAC and then were passed through a transfer line to the Bevatron, where they were accelerated almost to the speed of light. With the later addition of an improved vacuum system and other modifications, the Bevalac became the only machine the world capable of accelerating all of the elements of the periodic table to relativistic energies. The Bevatron/Bevalac finally ceased operations on February 21, 1993. - JG

Citation Caption

Magnet, Vol.13, No.11, November 1969

Date

11/69

TEID Doc ID

XBD9705-02206.TIF