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| Home > Publications database > Crystal-based extraction of the electron beam circulating in the DESY II Booster Synchrotron |
| Conference Presentation | PUBDB-2022-07555 |
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2022
Abstract: Beam extraction and collimation in particle accelerators using bent crystals as compact elements capable ofefficiently steering particle beams has been investigated at several high-energy hadron accelerators, such asSPS and LHC (CERN, Geneva), Tevatron (Batavia, USA), U70 (Protvino, Russia). Due to technological limitationsand a not sufficiently deep understanding of the physics at the base of the interactions between chargedparticle beams and crystals, this technique has never been applied to electron beams.Recent innovative experiments carried out at SLAC (Stanford, USA) and MAMI (Mainz, Germany) has raisedup the technological readiness level and the understanding of the processes of interaction between crystalsand electron beams, highlighting the possibility to use bent crystals to extract electron beams from worldwidespread synchrotrons.In this contribution we report the first design of a proof-of-principle experiment aiming to use bent crystalsas elements to achieve the extraction of 6 GeV electrons circulating in the DESY II Booster Synchrotron. Thiswould be possible exploiting the phenomena of “channeling”: particles of a beam which are channeled betweenatomic planes of a crystal are forced to travel between atomic axes or planes; mechanically bendingof the crystal results in steering of the beam, with an effect equivalent to the one of a magnetic field of fewhundred Tesla.We investigated the experimental setup in detail, though in this report we will focus on its main aspects, suchas the particle beam dynamics during the extraction process, the manufacturing and characterization of bentcrystals and the detection of the extracted beam.We conclude that, following a successful proof-of-principle experiment, this technique can be applied at manylepton accelerators existing in the world for nuclear and particle physics detectors and generic detector R&D,as well as in many projects in high-energy physics requiring fixed-target experiments including projects relatedto lepton colliders.
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