Liquid-hydrogen bubble chamber developed

Development of a liquid-hydrogen bubble chamber more than 60 times as large as any now in use is being conducted by the University of California Radiation Laboratory (UCRL) assisted by the National Bureau of Standards (NBS). The bubble chamber is being constructed to operate with the Bevatron, the 6 billion electron volt particle accelerator at UCRL. D. B. Chelton, D. B. Mann, and B. W. Birmingham of the NBS Cryogenic Engineering Laboratory at Boulder Colo., are working on the project, which involves many, difficult and unique cryogenic engineering problems.