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MOBO04 |
Characterization and First Beam Loss Detection with One ESS-nBLM System Detector |
29 |
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- L. Segui, H. Alves, S. Aune, J. Beltramelli, Q. Bertrand, M. Combet, M. Kebbiri, Ph. Legou, O. Maillard, A. Marcel, T. Papaevangelou
CEA-IRFU, Gif-sur-Yvette, France
- A. Dano-Daguze, D. Desforge, F. Gougnaud, T.J. Joannem, C. Lahonde-Hamdoun, P. Le Bourlout, Y. Mariette, J. Marroncle, V. Nadot, G. Tsiledakis
CEA-DRF-IRFU, France
- I. Dolenc Kittelmann, T.J. Shea
ESS, Lund, Sweden
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The monitoring of losses is crucial in any accelerator. In the new high intensity hadron facilities even low energy beam can damage or activate the materials so the detection of small losses in this region is very important. A new type of neutron beam loss monitor has been developed specifically targeting this region, where only neutrons and photons can be produced and where typical BLM, based on charged particle detection, could not be appropriate because of the photon background due to the RF cavities. The BLM proposed is based on gaseous Micromegas detectors, designed to be sensitive to fast neutrons and with little sensitivity to photons. Development of the detectors presented here has been done to fulfil the requirements of ESS and they will be part of the ESS-BI systems. The detector has been presented in previous editions of the conference. Here we focus on the neutron/gamma rejection with the final FEE and in the first operation of one of the modules in a beam during the commissioning of LINAC4 (CERN) with the detection of provoked losses and their clear separation from RF gammas. The ESS-nBLM system is presented in this conference in a separate contribution.
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Slides MOBO04 [7.609 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-MOBO04
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About • |
paper received ※ 05 September 2019 paper accepted ※ 09 September 2019 issue date ※ 10 November 2019 |
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MOPP022 |
Neutron Sensitive Beam Loss Monitoring System for the ESS Linac |
131 |
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- I. Dolenc Kittelmann, F.S. Alves, E.C. Bergman, C.S. Derrez, V. Grishin, K.E. Rosengren, T.J. Shea
ESS, Lund, Sweden
- Q. Bertrand, T.J. Joannem, Ph. Legou, Y. Mariette, V. Nadot, T. Papaevangelou, L. Segui
CEA-IRFU, Gif-sur-Yvette, France
- W. Cichalewski, G.W. Jabłoński, W. Jałmużna, R. Kiełbik
TUL-DMCS, Łódź, Poland
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The European Spallation Source, currently under construction in Lund, Sweden, will be a neutron source based on partly superconducting linac, accelerating protons to 2GeV with a peak current of 62.5mA, ultimately delivering a 5MW beam to a rotating tungsten target. For a successful tuning and operation of a linac, a Beam Loss Monitoring (BLM) system is required. The system is designed to protect the machine from beam-induced damage and unnecessary activation of the components. This contribution focuses on one of the BLM systems to be deployed at the ESS linac, namely the neutron sensitive BLM (nBLM). Recently, test of the nBLM data acquisition chain including the detector has been performed at LINAC4, at CERN. The test represents first evaluation of the system prototype in realistic environment. Results of the test will be presented together with an overview of the ESS nBLM system.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP022
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About • |
paper received ※ 04 September 2019 paper accepted ※ 07 September 2019 issue date ※ 10 November 2019 |
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Export • |
reference for this paper using
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※ LaTeX,
※ Text/Word,
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