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A positron source using an axially oriented crystal associated to a granular amorphous converter
/ Xu, Cheng-Hai (Beijing, Inst. High Energy Phys. ; Orsay, LAL ; Orsay) ; Chehab, Robert (Lyon, IPN) ; Sievers, Peter (CERN) ; Artru, Xavier (Lyon, IPN) ; Chevallier, Michel (Lyon, IPN) ; Dadoun, Olivier (Orsay, LAL ; Orsay) ; Pei, Guo-Xi (Beijing, Inst. High Energy Phys.) ; Strakhovenko, Vladimir M (Novosibirsk, IYF) ; Variola, Alessandro (Orsay, LAL ; Orsay)
A non-conventional positron source using the intense l radiation from an axially oriented monocrystal which materializes into e(+)e(-') pairs in a granular amorphous converter is described. The enhancement of photon radiation by multi-GeV electrons crossing a tungsten crystal along its <111> axis is reported. [...]
2012 - 8 p.
- Published in : Chin. Phys. C 36 (2012) 871-878
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2.
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Investigations on a hybrid positron source with a granular converter
/ Artru, X (Lyon, IPN) ; Chaikovska, I (Orsay, LAL) ; Chehab, R (Lyon, IPN) ; Chevallier, M (Lyon, IPN) ; Dadoun, O (Orsay, LAL) ; Furukawa, K (KEK, Tsukuba) ; Guler, H (Orsay, LAL) ; Kamitani, T (KEK, Tsukuba) ; Miyahara, F (KEK, Tsukuba) ; Satoh, M (KEK, Tsukuba) et al.
Promising results obtained with crystal targets for positron production led to the elaboration of a hybrid source made of an axially oriented tungsten crystal, as a radiator, and an amorphous tungsten converter. If the converter is granular, made of small spheres, the heat dissipation is greatly enhanced and the thermal shocks reduced, allowing the consideration of such device for the future linear colliders. [...]
2015 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 355 (2015) 60-64
Elsevier Open Access article: PDF;
In : 6th International Conference on Charged and Neutral Particles Channeling Phenomena, Capri, Italy, 5 - 10 Oct 2014, pp.60-64
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3.
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Optimization of an hybrid positron source using channeling
/ Chaikovska, I (Orsay, LAL) ; Chehab, R (Orsay, LAL) ; Guler, H (Orsay, LAL) ; Sievers, P (CERN) ; Artru, X (Lyon, IPN) ; Chevallier, M (Lyon, IPN) ; Suwada, T (KEK, Tsukuba) ; Satoh, M (KEK, Tsukuba) ; Kamitani, T (KEK, Tsukuba) ; Furukawa, K (KEK, Tsukuba) et al.
The hybrid positron source made of a crystal-radiator, as a source of channeling radiation, and an amorphous converter is briefly described. Optimization of the heating effects and thermal shocks led to a granular converter made of small tungsten spheres. [...]
2017 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 402 (2017) 58-62
In : 7h International Conference on Charged & Neutral Particles Channeling Phenomena, Sirmione, Italy, 23 - 30 Sep 2016, pp.88
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4.
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Study of an hybrid positron source using channeling for CLIC
/ Dadoun, O (Orsay, LAL) ; Chaikovska, I (Orsay, LAL) ; Chehab, R (Lyon, IPN) ; Poirier, F (Orsay, LAL) ; Rinolfi, L (CERN) ; Strakhovenko, V (Novosibirsk, IYF) ; Variola, A (Orsay, LAL) ; Vivoli, A (CERN)
The CLIC study considers the hybrid source using channeling as the baseline for positron production. [...]
CLIC-Note-808.
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2009 - 11.
Full text
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5.
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Brilliant positron sources for CLIC and other collider projects
/ Rinolfi, Louis (CERN) ; Chehab, Robert (Lyon, IPN) ; Dadoun, Olivier (Orsay, LAL) ; Kamitani, Takuya (KEK, Tsukuba) ; Strakhovenko, Vladimir (Novosibirsk, IYF) ; Variola, Alessandro (Orsay, LAL)
The CLIC (Compact Linear Collider), as future linear collider, requires an intense positron source. [...]
CERN-OPEN-2013-022 ; CLIC-Note-985.
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2013 - 13.
Preprint
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6.
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The Baseline Positron Production and Capture Scheme for CLIC
/ Dadoun, Olivier (Orsay, LAL) ; Chaikovska, Iryna (Orsay, LAL) ; Lepercq, Pierre (Orsay, LAL) ; Poirier, Freddy (Orsay, LAL) ; Variola, Alessandro (Orsay, LAL) ; Chehab, Robert (Lyon, IPN) ; Rinolfi, Louis (CERN) ; Vivoli, Alessandro (CERN) ; Strakhovenko, Vladimir (Novosibirsk, IYF) ; Xu, Chengai (Beijing, Inst. High Energy Phys.)
The CLIC study considers the hybrid source using channeling as the baseline for unpolarised positron production. The hybrid source uses a few GeV electron beam impinging on a tungsten crystal target [...]
CLIC-Note-824.-
2010
Fulltext: PDF; External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.WEOBMH03
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7.
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Experimental Activities on High Intensity Positron Sources Using Channeling
/ Chaikovska, Iryna (Orsay, LAL) ; Artru, Xavier (Lyon, IPN) ; Chehab, Robert (Orsay, LAL) ; Furukawa, Kazuro (KEK, Tsukuba) ; Guler, Hayg (Orsay, LAL) ; Kamitani, Takuya (KEK, Tsukuba) ; Kubytskyi, Viacheslav (Orsay, LAL) ; Miyahara, Fusashi (KEK, Tsukuba) ; Rodin, Volodymyr (Taras Shevchenko U.) ; Satoh, Masanori (KEK, Tsukuba) et al.
The positron source under investigation is using channeling radiation of multi-GeV electrons in a tungsten crystal. The radiated photons are impinging on the amorphous targets creating e⁺e⁻ pairs. [...]
CERN-ACC-2017-270.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-WEPIK002
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.WEPIK002
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8.
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Radiation-damage study of a monocrystalline tungsten positron converter
/ Artru, X (Lyon, IPN) ; Kirsch, R (Lyon, IPN) ; Chehab, R (Orsay, LAL) ; Johnson, B (SLAC, SSRL) ; Keppler, P (Stuttgart, Max Planck Inst.) ; Major, J V (Stuttgart, Max Planck Inst.) ; Rinolfi, Louis (CERN) ; Jejcic, A (Orsay, IPN)
The exploitation of the enhancement of positron sources by channeling effects, in particular for Linear Colliders (LC), relies on the long term resistance of the crystal to radiation damage. Such dama ge has been tested on a 0.3 mm thick tungsten monocrystal exposed during 6 months to the 30 Gev incident electron beam of the SLAC Linear Collider (SLC). [...]
CERN-PS-98-017-LP; CLIC-Note-369; LAL-RT-98-02.-
Geneva : CERN, 1998 - 4 p.
Access to fulltext document: PDF;
In : 6th European Particle Accelerator Conference, Stockholm, Sweden, 22 - 26 Jun 1998, pp.1394-1396
- Please contact the library if you need to access this document.
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9.
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Experimental determination of the characteristics of a positron source using channeling : addendum to P309 and request for beam time in 2001
/ Chehab, R. (Orsay, LAL) ; Cizeron, R. (Orsay, LAL) ; Sylvia, C. (Orsay, LAL) ; Baier, V. (Novosibirsk, IYF) ; Beloborodov, K. (Novosibirsk, IYF) ; Bukin, A. (Novosibirsk, IYF) ; Burdin, S. (Novosibirsk, IYF) ; Dimova, T. (Novosibirsk, IYF) ; Drozdetskiy, A. (Novosibirsk, IYF) ; Druzhinin, V. (Novosibirsk, IYF) et al.
Numerical simulations and `proof of principle' experiments showed clearly the interest of using crystals as photon generators dedicated to intense positron sources for linear colliders. An experimental investigation, using a 10 GeV secondary electron beam, of the SPS-CERN, impinging on an axially oriented thick tungsten crystal, has been prepared and operated between May and August 2000. [...]
physics/0008036; LINAC2000-MOB21; LAL-RT-00-10; CERN-SPSC-2000-044-APP; CERN-SPSC-P-309-ADD-2-APP; CERN-SPSC-2000-044; LAL-RT-2000-10; SPSC-P-309-ADD-2.-
Geneva : CERN, 2000 - 3 p.
- Published in : eConf C: 000821 (2000) , pp. MOB21
- Published in : , pp. 143-145
Access to fulltext document: PDF; Fulltext: PDF; External links: Fulltext; Proceedings write-up on eConf
In : 20th International Linear Accelerator Conference, Monterey, CA, USA, 21 - 25 Aug 2000, pp.e-proc. MOB21
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10.
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Positron Sources Using Channeling: A Comparison with conventional Targets
/ Artru, X (Lyon, IPN) ; Baier, V N (Novosibirsk, IYF) ; Chehab, R (Orsay, LAL) ; Chevallier, M (Lyon, IPN) ; Dubrovin, M S (Novosibirsk, IYF) ; Jejcic, A ; Silva, J (College de France)
LAL-RT-97-02.-
1998 - 17 p.
- Published in : Part. Accel.: 59 (1998) , pp. 19-41
Fulltext: PDF;
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