1. Crystal for slow extraction loss-reduction of the SPS electrostatic septum
- Author
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Esposito, Luigi Salvatore, Addesa, Francesca, Afonin, Alexander, Bestman, Patrick, Borg, Johan, Butcher, Mark, Calviani, Marco, Chesnokov, Yuri, Denisov, Alexander, Di Castro, Mario, Donzé, Mathieu, Durum, Arthur, Fraser, Matthew, Galluccio, Francesca, Garattini, Marco, Gavrikov, Yury, Gilardoni, Simone, Goddard, Brennan, Hall, Geoff, Iacoangeli, Francesco, Ivanov, Yury, James, Tom, Kain, Verena, Kovalenko, Alexander, Koznov, Mikhail Aleksandrovich, Lendaro, Jerome, Maisheev, Vladimir, Malyarenko, Luodmila, Masi, Alessandro, Murtas, Fabrizio, Natochii, Andrii, Pari, Michelangelo, Pesaresi, Mark, Prieto, Javier, Rossi, Roberto, Sandomirskiy, Yury, Scandale, Walter, Seidenbinder, Regis, Serrano Galvez, Pablo, Skorobogatov, V., Stoel, Linda, Taratin, Alexander, Velotti, Francesco, Yanovich, Andrey, Zhovkovska, Valeriia, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
- Subjects
experiment ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,alignment ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Accelerators and Storage Rings ,Accelerator Physics ,ECR ,MC4: Hadron Accelerators ,0202 electrical engineering, electronic engineering, information engineering ,extraction ,Physics::Accelerator Physics ,020201 artificial intelligence & image processing ,0210 nano-technology ,Nuclear Experiment ,proton - Abstract
The use of a bent crystal was investigated in order to reduce the losses at the CERN Super Proton Synchrotron (SPS) electrostatic septa (ZS) during the slow extraction of 400 GeV protons toward the North Area. The crystal, installed a few meters upstream the ZS, bends protons that would otherwise impinge on the ZS wires. Since particle deflection with good efficiency is achieved only when the crystal lattice is aligned within ~10 urad to the trajectory of the particles (at p = 400 GeV/c), a compact goniometer was built to allow the correct angular alignment of the crystal with respect to the incoming beam with a precision of few urad. In this paper, we report on the crystal features measured during a dedicated beam test by the UA9 experimental installation in the CERN H8 beam line. Details of the goniometer and its installation are also reported. The first results achieved during dedicated Machine Development (MD) sessions are finally presented., Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia
- Published
- 2019