A time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB
Abstract We report on measurements of beam backgrounds during the first commissioning phase of the SuperKEKB collider in 2016, performed with the plastic scintillator and silicon photomultiplier-based CLAWS detector system. The sub-nanosecond time resolution and single particle detection capability...
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SpringerOpen
2021
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oai:doaj.org-article:f3c6276cfb544973b049e349d489cca32021-11-08T10:43:13ZA time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB10.1140/epjc/s10052-021-09769-31434-60441434-6052https://doaj.org/article/f3c6276cfb544973b049e349d489cca32021-11-01T00:00:00Zhttps://doi.org/10.1140/epjc/s10052-021-09769-3https://doaj.org/toc/1434-6044https://doaj.org/toc/1434-6052Abstract We report on measurements of beam backgrounds during the first commissioning phase of the SuperKEKB collider in 2016, performed with the plastic scintillator and silicon photomultiplier-based CLAWS detector system. The sub-nanosecond time resolution and single particle detection capability of the sensors allow bunch-by-bunch measurements, enable CLAWS to perform a novel time resolved analysis of beam backgrounds, and make the system uniquely suited for the study of injection backgrounds. We present measurements of various aspects of regular beam background and injection backgrounds which include time structure and decay behavior of injection backgrounds, hit-energy spectra and overall background rates. These measurements show that the elevated background rates following an injection generally last for several milliseconds, with the majority of the background particles typically observed within the first $${500}~\upmu \hbox {s}$$ 500 μ s . The injection backgrounds exhibit pronounced patterns in time, connected to betatron and synchrotron oscillations in the accelerator rings. The frequencies of these patterns are determined from detector data.Miroslav GabrielFrank SimonHendrik WindelYoshihiro FunakoshiMichael HedgesNaoko IidaIgal JaegleChristian KieslingNaomi van der KolkPeter LewisHiroyuki NakayamaYukiyoshi OhnishiRiccardo de SangroYusuke SuetsuguMarco SzalaySven VahsenSpringerOpenarticleAstrophysicsQB460-466Nuclear and particle physics. Atomic energy. RadioactivityQC770-798ENEuropean Physical Journal C: Particles and Fields, Vol 81, Iss 11, Pp 1-19 (2021) |
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DOAJ |
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DOAJ |
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EN |
| topic |
Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 |
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Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Miroslav Gabriel Frank Simon Hendrik Windel Yoshihiro Funakoshi Michael Hedges Naoko Iida Igal Jaegle Christian Kiesling Naomi van der Kolk Peter Lewis Hiroyuki Nakayama Yukiyoshi Ohnishi Riccardo de Sangro Yusuke Suetsugu Marco Szalay Sven Vahsen A time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB |
| description |
Abstract We report on measurements of beam backgrounds during the first commissioning phase of the SuperKEKB collider in 2016, performed with the plastic scintillator and silicon photomultiplier-based CLAWS detector system. The sub-nanosecond time resolution and single particle detection capability of the sensors allow bunch-by-bunch measurements, enable CLAWS to perform a novel time resolved analysis of beam backgrounds, and make the system uniquely suited for the study of injection backgrounds. We present measurements of various aspects of regular beam background and injection backgrounds which include time structure and decay behavior of injection backgrounds, hit-energy spectra and overall background rates. These measurements show that the elevated background rates following an injection generally last for several milliseconds, with the majority of the background particles typically observed within the first $${500}~\upmu \hbox {s}$$ 500 μ s . The injection backgrounds exhibit pronounced patterns in time, connected to betatron and synchrotron oscillations in the accelerator rings. The frequencies of these patterns are determined from detector data. |
| format |
article |
| author |
Miroslav Gabriel Frank Simon Hendrik Windel Yoshihiro Funakoshi Michael Hedges Naoko Iida Igal Jaegle Christian Kiesling Naomi van der Kolk Peter Lewis Hiroyuki Nakayama Yukiyoshi Ohnishi Riccardo de Sangro Yusuke Suetsugu Marco Szalay Sven Vahsen |
| author_facet |
Miroslav Gabriel Frank Simon Hendrik Windel Yoshihiro Funakoshi Michael Hedges Naoko Iida Igal Jaegle Christian Kiesling Naomi van der Kolk Peter Lewis Hiroyuki Nakayama Yukiyoshi Ohnishi Riccardo de Sangro Yusuke Suetsugu Marco Szalay Sven Vahsen |
| author_sort |
Miroslav Gabriel |
| title |
A time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB |
| title_short |
A time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB |
| title_full |
A time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB |
| title_fullStr |
A time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB |
| title_full_unstemmed |
A time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB |
| title_sort |
time resolved study of injection backgrounds during the first commissioning phase of superkekb |
| publisher |
SpringerOpen |
| publishDate |
2021 |
| url |
https://doaj.org/article/f3c6276cfb544973b049e349d489cca3 |
| work_keys_str_mv |
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| _version_ |
1718442770529517568 |