The 80-inch Liquid Hydrogen Bubble Chamber

The 80-inch Liquid Hydrogen Bubble Chamber. The stainless steel chamber (80 inches long by 26 inches high by 27 inches deep), which contains 900 liters of liquid hydrogen at a temperature of -414 degrees F, is surrounded by a vacuum chamber, large magnet coils, and a massive steel magnet yoke. The magnet, which requires 4 million watts of electrical power, provides a uniform magnet field throughout the chamber of 20,000 gauss. The magnet and vacuum chamber can be opened to provide access to the chamber. The entire 450-ton chamber and magnet assembly can be translated, rotated, and elevated as required by the experimental program.One side of the chamber consists of a glass window 6.5 inches thick through which the chamber is illuminated and photographed. As a pulse of highly energetic particles from the Alternating Gradient Synchrotron are guided magnetically into the chamber, the liquid hydrogen is superheated by a sudden reduction in pressure. The charged particles entering the chamber or produced in the chamber by nuclear interactions between the bombarding particles and the hydrogen nuclei (protons) cause the superheated liquid hydrogen to boil, leaving a track of tiny bubbles to mark their paths. The magnetic field in the chamber deflects the charged particles and causes them to move in curved paths.By measuring the curvature, length, and density of the tracks, scientists can determine the electric charge, momentum, mass, and other properties of the particlesThe light source for illuminating the chamber and the three automatic cameras which photograph the tracks are located on the lower gallery. A technician is seen removing one of the cameras. Vacuum equipment, as well as the chamber expansion system, are located on the upper gallery and on top of the chamber. The hydraulic ram which moves the chamber is shown at the lower left.Men in photo unidentified., Credit Line: Photo courtesy Brookhaven National Laboratory. For Publication Permission Request contact Jane Koropsak BNL-Media and Communications, jane@bnl.gov Telephone 631-344-4909
Abstract/Description: The 80-inch Liquid Hydrogen Bubble Chamber. The stainless steel chamber (80 inches long by 26 inches high by 27 inches deep), which contains 900 liters of liquid hydrogen at a temperature of -414 degrees F, is surrounded by a vacuum chamber, large magnet coils, and a massive steel magnet yoke. The magnet, which requires 4 million watts of electrical power, provides a uniform magnet field throughout the chamber of 20,000 gauss. The magnet and vacuum chamber can be opened to provide access to the chamber. The entire 450-ton chamber and magnet assembly can be translated, rotated, and elevated as required by the experimental program.One side of the chamber consists of a glass window 6.5 inches thick through which the chamber is illuminated and photographed. As a pulse of highly energetic particles from the Alternating Gradient Synchrotron are guided magnetically into the chamber, the liquid hydrogen is superheated by a sudden reduction in pressure. The charged particles entering the chamber or produced in the chamber by nuclear interactions between the bombarding particles and the hydrogen nuclei (protons) cause the superheated liquid hydrogen to boil, leaving a track of tiny bubbles to mark their paths. The magnetic field in the chamber deflects the charged particles and causes them to move in curved paths.By measuring the curvature, length, and density of the tracks, scientists can determine the electric charge, momentum, mass, and other properties of the particlesThe light source for illuminating the chamber and the three automatic cameras which photograph the tracks are located on the lower gallery. A technician is seen removing one of the cameras. Vacuum equipment, as well as the chamber expansion system, are located on the upper gallery and on top of the chamber. The hydraulic ram which moves the chamber is shown at the lower left.Men in photo unidentified.
Subject(s): Bubble chambers
Laboratories
Equipment and supplies
Brookhaven National Laboratory
Date Created: circa 1960-1969
Credit Line: Photo courtesy Brookhaven National Laboratory. For Publication Permission Request contact Jane Koropsak BNL-Media and Communications, jane@bnl.gov Telephone 631-344-4909
Catalog ID: Brookhaven National Laboratory F26
Title: The 80-inch Liquid Hydrogen Bubble Chamber.
Name(s): Celia Elliott, Donor
Type of Resource: still image
Date Created: circa 1960-1969
Extent: 1 photographic print (color; 10 x 8 inches)
Abstract/Description: The 80-inch Liquid Hydrogen Bubble Chamber. The stainless steel chamber (80 inches long by 26 inches high by 27 inches deep), which contains 900 liters of liquid hydrogen at a temperature of -414 degrees F, is surrounded by a vacuum chamber, large magnet coils, and a massive steel magnet yoke. The magnet, which requires 4 million watts of electrical power, provides a uniform magnet field throughout the chamber of 20,000 gauss. The magnet and vacuum chamber can be opened to provide access to the chamber. The entire 450-ton chamber and magnet assembly can be translated, rotated, and elevated as required by the experimental program.One side of the chamber consists of a glass window 6.5 inches thick through which the chamber is illuminated and photographed. As a pulse of highly energetic particles from the Alternating Gradient Synchrotron are guided magnetically into the chamber, the liquid hydrogen is superheated by a sudden reduction in pressure. The charged particles entering the chamber or produced in the chamber by nuclear interactions between the bombarding particles and the hydrogen nuclei (protons) cause the superheated liquid hydrogen to boil, leaving a track of tiny bubbles to mark their paths. The magnetic field in the chamber deflects the charged particles and causes them to move in curved paths.By measuring the curvature, length, and density of the tracks, scientists can determine the electric charge, momentum, mass, and other properties of the particlesThe light source for illuminating the chamber and the three automatic cameras which photograph the tracks are located on the lower gallery. A technician is seen removing one of the cameras. Vacuum equipment, as well as the chamber expansion system, are located on the upper gallery and on top of the chamber. The hydraulic ram which moves the chamber is shown at the lower left.Men in photo unidentified.
Identifier(s): Brookhaven National Laboratory F26 (Catalog ID)
Note(s):

Credit Line: Photo courtesy Brookhaven National Laboratory. For Publication Permission Request contact Jane Koropsak BNL-Media and Communications, jane@bnl.gov Telephone 631-344-4909
Subject(s): Bubble chambers
Laboratories
Equipment and supplies
Brookhaven National Laboratory
Held by: Niels Bohr Library & Archives
Copyright Holder: Brookhaven National Laboratory
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