Information AboutPetra |
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Positron-Electron Tandem Ring Accelerator (PETRA) is one of the Particle Accelerator s at DESY in Hamburg , Germany . From 1978 to 1986 it was used to study Electron - Positron collisions. In one of these studies the first direct evidence for Gluon s was found in Three Jet Events . The modification called PETRA-II is a source of high-energy Synchrotron Radiation and also a pre-accelerator for the HERA . A planned upgrade in 2007 will convert it to PETRA-III, which will be a high intensity source for Synchrotron Radiation . REFERENCES AND EXTERNAL LINKS |
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