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Results of UFO dyna...
Results of UFO dynamics studies with beam in the LHC
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- Lindström, Björn (author)
- Uppsala universitet,FREIA,CERN, CH-1211 Geneva 23, Switzerland
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- Apollonio, A. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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- Belanger, P. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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- Dziadosz, M. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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- Gorzawski, A. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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- Grob, L. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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- Holzer, E. B. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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- Lechner, A. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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- Schmidt, R. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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- Valette, M. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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- Valuch, D. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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- Wollmann, D. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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(creator_code:org_t)
- 2018-10-03
- 2018
- English.
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In: Journal of Physics, Conference Series. - : Institute of Physics Publishing (IOPP). - 1742-6588 .- 1742-6596. ; 1067:2
- Related links:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Micrometer sized particles entering the LHC beam (the so called Unidentified Falling Objects or UFOs) are a known cause of localized beam losses since the beginning of high intensity beam operation, however the origin of these particles is not fully known. Their effect limits LHC availability by causing premature dumps due to excessive beam losses and occasionally even magnet quenches. This could become an important limitation for future accelerators such as the High Luminosity upgrade of the LHC (HL-LHC) and the Future Circular Collider (FCC). The dynamics of these UFOs was investigated in two dedicated experiments. In the first experiment, it was shown that the transverse movements of these particles can be studied by observing bunch-by-bunch losses from bunches with different horizontal and vertical emittances. In the second experiment, UFO-like events around the 16L2 interconnect in the LHC, which has seen intense UFO activity in 2017, were studied with the above method. This paper summarizes the results of both experiments.
Subject headings
- NATURVETENSKAP -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Lindström, Björn
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Apollonio, A.
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Belanger, P.
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Dziadosz, M.
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Gorzawski, A.
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Grob, L.
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show more...
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Holzer, E. B.
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Lechner, A.
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Schmidt, R.
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Valette, M.
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Valuch, D.
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Wollmann, D.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Accelerator Phys ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Subatomic Physic ...
- Articles in the publication
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Journal of Physi ...
- By the university
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Uppsala University