G Kenneth Green is in charge of building the 30 GeV synchrotron at the Brookhaven Research Laboratory in the United States. On 5 February last year, referring to the inauguration of the 28 GeV CERN synchrotron, he said: "The energy range beyond 20 GeV seems very promising. We hope to join you there soon!"

They have. The following telegram arrived at CERN during the night of 29 July: "We finally made it. Went through half integral to thirty one." Three official telegrams were sent off on the CERN telex:
• Taken from CERN Courier July 1960 p2."Congratulations from all CERN on your suCCEess. Nice to have company." from S A ff Dakin and G Bernardini, in the absence of J B Adams.
• Taken from CERN Courier July 1960 p2."Sincerest congratulations from the members of the PS Machine Group for your great suCCEess." from P Germain.
• Taken from CERN Courier July 1960 p2."31 000 congratulations to you from us all. Best of luck in the next stages." from the members of the Parameter Committee.

Two months - as in the case of CERN - after the first beam had been once round the machine, the Brookhaven proton synchrotron is operating at full energy. This is wonderful news for the scientific world.

Two giant accelerators will now share in the study of the infinitely small. A full programme can now be undertaken in co-operation. All physicists will be delighted at this, even though the title of "biggest in the world" has once again crossed the Atlantic...

The 184 inch synchrocyclotron at Berkeley

Because of the heavy demand for experimental time on the 184 inch cyclotron at the Lawrence Radiation Laboratory, this accelerator was placed on three-shift, 24-hour-day operation early in 1959. The experimental physics programme at the cyclotron was concerned mainly with the study of the interactions and decays of pi and mu mesons. An intense beam of positive pions, or pi mesons, has been formed at the 184 inch cyclotron in order to perform experiments relating to the scattering of pi mesons from protons. The analysis of these experiments promises to provide detailed information on this fundamental process.

An experiment has also been performed to study the production of an additional pi meson by the collision of a pi meson with a proton. The results of this experiment indicate that a much greater number of pi mesons are created than had been expected on the basis of prior theoretical predictions. New theoretical ideas, which include the effects of interactions between the pi mesons, are in reasonable agreement with experimental results.

• Taken from CERN Courier July 1960 p3.