World's best synchrotron radiation source accelerates its first beam
Clear the ring for PETRA III
"With PETRA III, DESY is commissioning another X-ray light source for research, a facility without comparison worldwide," said Professor Helmut Dosch, Chair of the DESY Board of Directors. "With this lightsource we will offer the most brilliant synchrotron radiation to our users, setting new standards in photon science." As the most powerful lightsource of its kind, PETRA III will offer excellent research possibilities, in particular to those researchers who investigate very small samples or those who require tightly focused and very short-wavelength X-rays for their experiments.
"Our DESY team has shown that even today it is possible to complete a complex project like the PETRA III upgrade within the determined time frame and budget - even in today's times," DESY Research Director for Photon Science, Professor Edgar Weckert, beamed. The 225-million-Euro remodelling was largely funded by the Federal Ministry of Education and Research (BMBF), the City of Hamburg and the Helmholtz Association. The accelerator was originally built for particle physics. The gluon, a carrier particle for one of the four fundamental forces in our world, the strong force, was discovered at PETRA. More recently, PETRA was used as a preaccelerator for DESY's successful particle accelerator HERA. In less than two years, PETRA was completely refurbished and modernised. All magnets that keep the accelerated particles on their path have been equipped with new solenoids. Moreover, the whole vacuum system, the complete monitor and control technology as well as power and cooling water supplies have been replaced. A 300-metre-long experimental hall was built over one eight of the PETRA ring, housing 14 synchrotron beamlines and up to 30 experimental stations. To ensure that the high-precision measuring equipment in the experiments is not affected by vibration, the experiments will be installed on the largest monolithic concrete slab in the world.
After the stable storage of the particle beam achieved today, the accelerator will be set up for the production of the most wanted synchrotron radiation in the coming weeks. The undulators - special magnets producing synchrotron radiation - will be positioned close to the particle beam, making the positrons follow a zigzag course to make them emit synchrotron radiation. At the same time, the mounting of the 14 beamlines, to be used by user scientists for their experiments, continues in the experiment hall. A first test run with synchrotron radiation is planned this summer; regular user operation of the third generation synchrotron radiation source will start in 2010.
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