JADE (particle detector)
Encyclopedia
JADE was a particle detector
at the particle accelerator
PETRA
at DESY
, Hamburg
.
It was operated from 1979 to 1986. JADE's most important scientific achievement was the discovery of the gluon
in three jet events. It also helped greatly in establishing quantum chromodynamics
. JADE is an acronym for Japan, Deutschland, and England, the three countries from which the participating universities originated. The JADE jet chamber is now exhibited in the physics lecture hall at the University of Heidelberg.
Although the last data taken with JADE are 20 years old, analysis continues with the most recent paper published in 2005.
Particle detector
In experimental and applied particle physics, nuclear physics, and nuclear engineering, a particle detector, also known as a radiation detector, is a device used to detect, track, and/or identify high-energy particles, such as those produced by nuclear decay, cosmic radiation, or reactions in a...
at the particle accelerator
Particle accelerator
A particle accelerator is a device that uses electromagnetic fields to propel charged particles to high speeds and to contain them in well-defined beams. An ordinary CRT television set is a simple form of accelerator. There are two basic types: electrostatic and oscillating field accelerators.In...
PETRA
PETRA
PETRA is one of the particle accelerators at DESY in Hamburg, Germany. From 1978 to 1986 it was used to study electron–positron collisions. It was here that the TASSO collaboration found the first direct evidence for gluons in three jet events...
at DESY
DESY
The DESY is the biggest German research center for particle physics, with sites in Hamburg and Zeuthen....
, Hamburg
Hamburg
-History:The first historic name for the city was, according to Claudius Ptolemy's reports, Treva.But the city takes its modern name, Hamburg, from the first permanent building on the site, a castle whose construction was ordered by the Emperor Charlemagne in AD 808...
.
It was operated from 1979 to 1986. JADE's most important scientific achievement was the discovery of the gluon
Gluon
Gluons are elementary particles which act as the exchange particles for the color force between quarks, analogous to the exchange of photons in the electromagnetic force between two charged particles....
in three jet events. It also helped greatly in establishing quantum chromodynamics
Quantum chromodynamics
In theoretical physics, quantum chromodynamics is a theory of the strong interaction , a fundamental force describing the interactions of the quarks and gluons making up hadrons . It is the study of the SU Yang–Mills theory of color-charged fermions...
. JADE is an acronym for Japan, Deutschland, and England, the three countries from which the participating universities originated. The JADE jet chamber is now exhibited in the physics lecture hall at the University of Heidelberg.
Although the last data taken with JADE are 20 years old, analysis continues with the most recent paper published in 2005.