BLM Thresholds and UFOs

In 2016, the thresholds of more than half of the LHC Beam Loss Monitors connected to the Beam Interlock System were changed throughout the year. Many of the changes were in one or another way related to losses induced by micron scale dust particles often referred to as Unidentified Falling Objects (...

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Detalles Bibliográficos
Autores principales: Lechner, A, Albert, M, Auchmann, B, Castro, C Bahamonde, Grob, L, Holzer, E B, Jowett, J, Kalliokoski, M, Naour, S Le, Lunt, A, Mereghetti, A, Papotti, G, Schmidt, R, Veness, R, Verweij, A, Willering, G, Wollmann, D, Xu, C, Zerlauth, M
Lenguaje:eng
Publicado: CERN 2017
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/2293680
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author Lechner, A
Albert, M
Auchmann, B
Castro, C Bahamonde
Grob, L
Holzer, E B
Jowett, J
Kalliokoski, M
Naour, S Le
Lunt, A
Mereghetti, A
Papotti, G
Schmidt, R
Veness, R
Verweij, A
Willering, G
Wollmann, D
Xu, C
Zerlauth, M
author_facet Lechner, A
Albert, M
Auchmann, B
Castro, C Bahamonde
Grob, L
Holzer, E B
Jowett, J
Kalliokoski, M
Naour, S Le
Lunt, A
Mereghetti, A
Papotti, G
Schmidt, R
Veness, R
Verweij, A
Willering, G
Wollmann, D
Xu, C
Zerlauth, M
author_sort Lechner, A
collection CERN
description In 2016, the thresholds of more than half of the LHC Beam Loss Monitors connected to the Beam Interlock System were changed throughout the year. Many of the changes were in one or another way related to losses induced by micron scale dust particles often referred to as Unidentified Falling Objects (UFOs). This paper summarizes the UFO trends, the number of UFO-induced dumps and quenches in 2015 and 2016, and shows how dumps were distributed between arcs and straight sections. The impact of 2016 threshold changes on the number of dumps in the arcs is analyzed and it is estimated how many dumps and quenches would have occurred if other threshold strategies would have been adopted. The paper concludes with a brief summary of non-UFO-related threshold changes and an outlook for 2017.
id oai-inspirehep.net-1635450
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
publisher CERN
record_format invenio
spelling oai-inspirehep.net-16354502019-09-30T06:29:59Zhttp://cds.cern.ch/record/2293680engLechner, AAlbert, MAuchmann, BCastro, C BahamondeGrob, LHolzer, E BJowett, JKalliokoski, MNaour, S LeLunt, AMereghetti, APapotti, GSchmidt, RVeness, RVerweij, AWillering, GWollmann, DXu, CZerlauth, MBLM Thresholds and UFOsAccelerators and Storage RingsIn 2016, the thresholds of more than half of the LHC Beam Loss Monitors connected to the Beam Interlock System were changed throughout the year. Many of the changes were in one or another way related to losses induced by micron scale dust particles often referred to as Unidentified Falling Objects (UFOs). This paper summarizes the UFO trends, the number of UFO-induced dumps and quenches in 2015 and 2016, and shows how dumps were distributed between arcs and straight sections. The impact of 2016 threshold changes on the number of dumps in the arcs is analyzed and it is estimated how many dumps and quenches would have occurred if other threshold strategies would have been adopted. The paper concludes with a brief summary of non-UFO-related threshold changes and an outlook for 2017.CERNoai:inspirehep.net:16354502017
spellingShingle Accelerators and Storage Rings
Lechner, A
Albert, M
Auchmann, B
Castro, C Bahamonde
Grob, L
Holzer, E B
Jowett, J
Kalliokoski, M
Naour, S Le
Lunt, A
Mereghetti, A
Papotti, G
Schmidt, R
Veness, R
Verweij, A
Willering, G
Wollmann, D
Xu, C
Zerlauth, M
BLM Thresholds and UFOs
title BLM Thresholds and UFOs
title_full BLM Thresholds and UFOs
title_fullStr BLM Thresholds and UFOs
title_full_unstemmed BLM Thresholds and UFOs
title_short BLM Thresholds and UFOs
title_sort blm thresholds and ufos
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2293680
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