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CERN-RD39 collaboration activities aimed at cryogenic silicon detector application in high-luminosity Large Hadron Collider
/ Li, Zheng (Xiangtan U.) ; Eremin, Vladimir (Ioffe Phys. Tech. Inst.) ; Verbitskaya, Elena (Ioffe Phys. Tech. Inst.) ; Dehning, Bernd (CERN) ; Sapinski, Mariusz (CERN) ; Bartosik, Marcin R (CERN) ; Alexopoulos, Andreas (CERN) ; Kurfürst, Christoph (Vienna U.) ; Härkönen, Jaakko (Helsinki Inst. of Phys.)
Beam Loss Monitors (BLM) made of silicon are new devices for monitoring of radiation environment in the vicinity of superconductive magnets of the Large Hadron Collider. The challenge of BLMs is extreme radiation hardness, up to 10 16 protons/cm 2 while placed in superfluid helium (temperature of 1.9 K). [...]
2016 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 824 (2016) 476-479
In : Frontier Detectors for Frontier Physics: 13th Pisa Meeting on Advanced Detectors, La Biodola, Isola D'elba, Italy, 24 - 30 May 2015, pp.476-479
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In situ radiation test of silicon and diamond detectors operating in superfluid helium and developed for beam loss monitoring
/ Kurfürst, C (CERN) ; Dehning, B (CERN) ; Sapinski, M (CERN) ; Bartosik, M R (CERN) ; Eisel, T (CERN) ; Fabjan, C (CERN) ; Rementeria, C A (CERN) ; Griesmayer, E (IAEA, Vienna) ; Eremin, V (Ioffe Phys. Tech. Inst.) ; Verbitskaya, E (Ioffe Phys. Tech. Inst.) et al.
As a result of the foreseen increase in the luminosity of the Large Hadron Collider, the discrimination between the collision products and possible magnet quench-provoking beam losses of the primary proton beams is becoming more critical for safe accelerator operation. We report the results of ongoing research efforts targeting the upgrading of the monitoring system by exploiting Beam Loss Monitor detectors based on semiconductors located as close as possible to the superconducting coils of the triplet magnets. [...]
2015 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 782 (2015) 149-158
Elsevier Open Access article: PDF;
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Charge collection in Si detectors irradiated in situ at superfluid helium temperature
/ Verbitskaya, Elena (Ioffe Phys. Tech. Inst.) ; Eremin, Vladimir (Ioffe Phys. Tech. Inst.) ; Zabrodskii, Andrei (Ioffe Phys. Tech. Inst.) ; Dehning, Bernd (CERN) ; Kurfürst, Christoph (CERN) ; Sapinski, Mariusz (CERN) ; Bartosik, Marcin R (CERN) ; Egorov, Nicolai (RIMST, Moscow) ; Härkönen, Jaakko (Helsinki Inst. of Phys.)
Silicon and diamond detectors operated in a superfluid helium bath are currently being considered for the upgrade of the LHC beam loss monitoring system. The detectors would be installed in immediate proximity of the superconducting coils of the triplet magnets. [...]
2015 - 8 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 796 (2015) 118-125
Elsevier Open Access article: PDF;
In : 10th International Conference on Radiation Effects on Semiconductor Materials, Detectors, and Devices, Florence, Italy, 8 - 10 Oct 2014, pp.118-125
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Beam Loss Monitors for the Cryogenic LHC Magnets
/ Bartosik, Marcin R (CERN) ; Alexopoulos, Andreas (CERN) ; Dehning, Bernd (CERN) ; Eremin, Vladimir (Ioffe Phys. Tech. Inst.) ; Griesmayer, Erich (IAEA, Vienna) ; Sapinski, Mariusz (CERN) ; Verbitskaya, Elena (Ioffe Phys. Tech. Inst.)
The Beam Loss Monitoring system of the Large Hadron Collider close to the interaction points contains mostly gas ionization chambers working at room temperature, located far from the superconducting coils of the magnets. The system records particles lost from circulating proton beams, but is also sensitive to particles coming from the experimental collisions, which do not contribute significantly to the heat deposition in the superconducting coils. [...]
2016 - 4 p.
- Published in : 10.18429/JACoW-IBIC2015-MOPB042
Fulltext: PDF;
In : International Beam Instrumentation Conference , Melbourne, Australia, 13 - 17 Sep 2015, pp.MOPB042
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Restriction on the gain in collected charge due to carrier avalanche multiplication in heavily irradiated Si strip detectors
/ Verbitskaya, E (Ioffe Phys. Tech. Inst.) ; Eremin, V (Ioffe Phys. Tech. Inst.) ; Zabrodskii, A (Ioffe Phys. Tech. Inst.) ; Li, Z (Brookhaven Natl. Lab.) ; Luukka, P (Helsinki Inst. of Phys.)
Recent experiments on silicon detectors developed by the CERN-RD50 collaboration for very high luminosity colliders showed a significant enhancement of the collected charge $Q_c$ in Si detectors irradiated to the fluence of $10^{15} – 10^{16} \ \rm{n}_{eq}/cm^2$ if the devices were operated at high bias voltage. The enhancement arises from carrier avalanche multiplication in high electric field of the junction. [...]
2013 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 730 (2013) 66-72
In : 9th International Conference on Radiation Effects on Semiconductor Materials Detectors and Devices, Florence, Italie, 9 - 12 Oct 2012, pp.66-72
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Characterisation of SI Detectors for the Use at 2 K*
/ Bartosik, M (CERN) ; Dehning, B (CERN) ; Eisel, T (CERN) ; Kurfuerst, C (CERN) ; Rementeria, C (CERN) ; Sapinski, M (CERN) ; Eremin, V (IOFFE, St Petersburg, Russian Federation) ; Verbitskaya, E (IOFFE, St Petersburg, Russian Federation)
It is expected that the luminosity of the Large Hadron Collider (LHC) will be bounded in the future by the beam loss limits of the superconducting magnets. To protect the superconducting magnets of the high luminosity insertions an optimal detection of the energy deposition by the shower of beam particles is necessary. [...]
CERN-ATS-2013-058.-
Geneva : CERN, 2013 - 3 p.
Fulltext: PDF;
In : 4th International Particle Accelerator Conference, Shanghai, China, 12 - 17 May 2013, pp.643
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Development of silicon detectors for Beam Loss Monitoring at HL-LHC
/ Verbitskaya, E (Ioffe Phys. Tech. Inst.) ; Eremin, V (Ioffe Phys. Tech. Inst.) ; Zabrodskii, A (Ioffe Phys. Tech. Inst.) ; Bogdanov, A (Ioffe Phys. Tech. Inst.) ; Shepelev, A (Ioffe Phys. Tech. Inst.) ; Dehning, B (CERN) ; Bartosik, M R (CERN ; Zurich, ETH) ; Alexopoulos, A (CERN ; TEL, Lamia) ; Glaser, M (CERN) ; Ravotti, F (CERN) et al.
Silicon detectors were proposed as novel Beam Loss Monitors (BLM) for the control of the radiation environment in the vicinity of the superconductive magnets of the High-Luminosity Large Hadron Collider. The present work is aimed at enhancing the BLM sensitivity and therefore the capability of triggering the beam abort system before a critical radiation load hits the superconductive coils. [...]
2017 - 11 p.
- Published in : JINST 12 (2017) C03036
In : 14th Topical Seminar on Innovative Particle and Radiation Detectors , Siena, Italy, 3 - 6 Oct 2016, pp.C03036
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Radiation Tolerance of Cryogenic Beam Loss Monitor Detectors
/ Kurfuerst, C (CERN) ; Rementeria, C A (CERN) ; Bartosik, M (CERN) ; Dehning, B (CERN) ; Eisel, T (CERN) ; Sapinski, M (CERN) ; Eremin, V (Ioffe Phys. Tech. Inst.) ; Verbitskaya, E (Ioffe Phys. Tech. Inst.) ; Fabjan, C (Vienna, OAW) ; Griesmayer, E (CIVIDEC, Vienna)
At the triplet magnets, close to the interaction regions of the LHC, the current Beam Loss Monitoring system is sensitive to the particle showers resulting from the collision of the two beams. For the future, with beams of higher energy and intensity resulting in higher luminosity, distinguishing between these interaction products and possible quench-provoking beam losses from the primary proton beams will be challenging. [...]
CERN-ACC-2013-0188.-
Geneva : CERN, 2013 - 3 p.
Fulltext: PDF;
In : 4th International Particle Accelerator Conference, Shanghai, China, 12 - 17 May 2013, pp.3240
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