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000301901 0247_ $$2datacite_doi$$a10.3204/PUBDB-2016-02960
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000301901 1001_ $$0P:(DE-HGF)0$$aSeidel, M.$$b0$$eCorresponding author
000301901 1112_ $$aThe 7th European Particle Accelerator Conference EPAC 2000$$cVienna$$d2000-06-26 - 2000-06-30$$gEPAC 2000$$wAustria
000301901 245__ $$aLayout of the upgraded HERA interaction regions
000301901 260__ $$aHamburg$$bDESY$$c2000
000301901 300__ $$a379-381
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000301901 520__ $$aDESY pursues a luminosity upgrade project [1] for the HERA electron proton collider with the goal to raise the luminosity by a factor 5 compared to original design parameters. The major part of this increase is achieved by installing new interaction regions in 2000/2001. The new scheme involves a very early separation of the colliding beams by means of superconducting magnets that are installed inside the experimental detectors. The early beam separation allows to position the final focus quadrupoles closer to the IP, which in turn leads to smaller beam spotsizes and higher luminosity.The beam separation inside the detectors causes two major problems. About 28kW of synchrotron radiation power is produced in the separation magnets, i.e. in the detectors. Secondly the strong bending magnets tend to deflect low energy electrons, produced by beam-gas bremsstrahlung interactions, onto the detector beampipe. Both effects present qualitatively new background sources for the detectors. We describe how these problems are counteracted with the specifically adopted layout of the geometry and the vacuum system in the new interaction regions.
000301901 536__ $$0G:(DE-H253)POF1-HGF-No-Prog-20130405$$aNo facility / HGF program None (POF1-890)$$cPOF1-890$$x0
000301901 588__ $$aDataset connected to INSPIRE
000301901 650_7 $$2INSPIRE$$atalk: Vienna 2000/06/26
000301901 650_7 $$2INSPIRE$$aelectron p: storage ring
000301901 650_7 $$2INSPIRE$$aluminosity: upgrade
000301901 650_7 $$2INSPIRE$$abeam transport: colliding beams
000301901 650_7 $$2INSPIRE$$abeam focusing: colliding beams
000301901 650_7 $$2INSPIRE$$abackground
000301901 650_7 $$2INSPIRE$$asynchrotron radiation
000301901 650_7 $$2INSPIRE$$agas: scattering
000301901 650_7 $$2INSPIRE$$abremsstrahlung
000301901 650_7 $$2INSPIRE$$aDESY HERA Stor
000301901 693__ $$0EXP:(DE-MLZ)NOSPEC-20140101$$5EXP:(DE-MLZ)NOSPEC-20140101$$eNo specific instrument$$x0
000301901 7001_ $$0P:(DE-HGF)0$$aWilleke, F.$$b1
000301901 7870_ $$0PUBDB-2016-02907$$aDecking, Winfried$$dHamburg : DESY, 2000$$iIsPartOf$$rDESY-M-00-04; C00-06-26.2$$tContributions to the 7th European Particle Accelerator Conference EPAC 2000
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