DEVELOPMENT AND OPERATION OF LIQUID HYDROGEN BUBBLE CHAMBERS

Technical Report · Fri Oct 31 04:00:00 EST 1958

OSTI ID:4315890

Gow, J D

A series of liquid hydrogen bubble chamhers of increasing size has been constructed, culminating in a chamber 72 by 23 by 15 inches. All the chambers use a vapor-phase expansion system, and all are provided with a strong d-c magnetic field. The 10-inch chamber has been in operation for 2 years in conjunction with the Berkeley Bevatron. This chamber uses a transmission illuminatinn system, and refrigeration is provided by evaporating liquid hydrogen. The sensitive volume contains 8 liters of liquid hydrogen. The 15-inch chamber, more recently placed in operation, is a onewindow chamber, using a retrodirective'' illumination system in which a single glass surface serves both for illumination and viewing of bubbles. The 15-inch chamber also is cooled by evaporation of liquid hydrogen, and contains 40 liters of liquid in the chamber proper. This device was designed to operate with deuterium as well as hydrogen. The 15-inch chamber was built primarily as an improved research instrument, but was designed to also serve as a scale model of the 72-inch bubble chamber. The 72-inch chamber will come into preliminany operation in the summer of 1958. This chamber is similar in mechanical and optical design to the 15-inch chamber, except for the use of a Joule-Thompson refrigeration cycle to provide the necessary cooling. The design principles and operating experiences pertaining to the large chambers are presented. (auth)

• Research Organization: California Univ., Berkeley, CA (US). Radiation Lab.
• NSA Number: NSA-12-014920
• OSTI ID: 4315890
• Report Number(s): A/CONF.15/P/733
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BERKELEY
BEVATRON
BUBBLE CHAMBERS
COOLING
DEUTERIUM
EVAPORATION
EXPANSION
GLASS
HYDROGEN
LIGHT
LIQUIDS
LOW TEMPERATURE
MAGNETIC FIELDS
MECHANICS
OPTICAL SYSTEMS
PHYSICS
PROTONS
SYNCHROTRONS
VAPORS