High-resolution imaging of particle interactions in a large bubble chamber using holographic techniques

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5123057

Akbari, H

Particle interactions were recorded holographically in a large volume of the 15-foot Bubble Chamber at Fermilab. This cryogenic bubble chamber was filled with a heavy Neon-Hydrogen mixture and was exposed to a wide-band neutrino beam with mean energy of 150 GeV. The use of holography in combination with conventional photography provides a powerful tool for direct detection of short-lived particles. Holography gives a high resolution over a large depth of field which can not be achieved with conventional photography. A high-power pulsed ruby laser was used as the holographic light source. Since short pulses of some 50 ns duration at the required energy were found to give rise to boiling during the chamber's expansion, a reduction of the instantaneous power at a given energy was required to suppress this unwanted after-effect. This was achieved by developing a unique technique for stretching the pulses using a electro-optic feedback loop. One hundred thousand holograms were produced during a wide-band neutrino experiment (E-632, 1985) using a dark-field holographic system. Analysis of a sample of holograms shows a resolution of 150 {mu}m was achieved in an ovoidal shape fiducial volume of 0.48 m{sup 3}, 3% of the 14 m{sup 3} total fiducial volume of the chamber.

• Research Organization: Tufts Univ., Medford, MA (USA)
• OSTI ID: 5123057
• Country of Publication: United States
• Language: English

Related Subjects

440103 -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
645100* -- High Energy Physics-- Particle Interactions & Properties-Experimental
651000 -- Nuclear Physics
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BUBBLE CHAMBERS
DATA
ENERGY RANGE
EXPERIMENTAL DATA
GAS TRACK DETECTORS
GEV RANGE
GEV RANGE 100-1000
HOLOGRAPHY
IMAGE PROCESSING
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
PROCESSING
RADIATION DETECTORS