|
1.
|
|
|
2.
|
Impact of the Number of dpa on the Superconducting Properties in HiLumi-LHC and FCC Accelerators
/ Flükiger, Rene (CERN) ; Spina, Tiziana (CERN) ; Cerutti, Francesco (CERN) ; Besana, Maria Ilaria (CERN) ; Scheuerlein, Christian (CERN) ; Ballarino, Amalia (CERN) ; Bottura, Luca (CERN)
The aim of this paper is to estimate the change of the superconducting properties Tc, Jc, and Bc2 in the quadrupoles of the future accelerators HiLumi-LHC and FCC, submitted to irradiation by multiple high-energy sources. The estimations are performed based on the number of displacements per atom (dpa), calculated by means of the FLUKA code. [...]
2018 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4007905
In : 13th European Conference on Applied Superconductivity, ICCG, Geneva, Switzerland, 17 - 21 Sep 2017, pp.4007905
|
|
|
3.
|
Critical current density of Nb$_{3}$Sn wires after irradiation with 65MeV and 24GeV protons
/ Spina, T (CERN) ; Scheuerlein, C (CERN) ; Richter, D (CERN) ; Bottura, L (CERN) ; Ballarino, A (CERN) ; Flükiger, R (CERN)
Industrial Nb$_{3}$Sn wires with Ti and Ta additives (RRP process) and with Ta additives (PIT process) with a diameter of 1 mm have been irradiated at room temperature with protons of 65 MeV and of 24 GeV at various fluences up to 1×1021 p/m2. A steady increase of Jc vs. [...]
2014 - 4 p.
- Published in : J. Phys.: Conf. Ser. 507 (2014) 022035
External link: Fulltext
In : 11th European Conference on Applied Superconductivity, Genova, Italy, 15 - 19 Sep 2013, pp.022035
|
|
|
4.
|
|
|
5.
|
On the possible separation of the phase enriched with Nb in superconducting intermetallic $Nb_3Sn$ irradiated with fast protons
/ Vasil'ev, A L (Kurchatov Inst., Moscow) ; Ballarino, A (CERN) ; Bottura, L (CERN) ; Gavrilkin, S Yu (Lebedev Inst.) ; Degtyarenko, P N (Kurchatov Inst., Moscow) ; Karateev, I A (Kurchatov Inst., Moscow) ; Kruglov, V S (Kurchatov Inst., Moscow) ; Latushkin, S T (Kurchatov Inst., Moscow) ; Lunev, A V (Kurchatov Inst., Moscow) ; Ryazanov, A I (Kurchatov Inst., Moscow) et al.
The results of the study of magnetization and dynamic magnetic susceptibility are correlated with changes in the microstructure of superconducting intermetallic Nb$_{3}$Sn plates irradiated at the Kurchatov Institute cyclotron with fast protons with an energy of 12.8 MeV to a fluence of 1 · 1018 cm−2. The dependence of the superconducting transition temperature on the total irradiation dose is determined. [...]
2017 - 4 p.
- Published in : Bull. Lebedev Phys. Inst. 44 (2017) 118-121
|
|
|
6.
|
Effect of irradiation with 32-MeV protons on critical parameters of modern Nb$_{3}$Sn-based superconducting composite wires
/ Degtyarenko, P N (Kurchatov Inst., Moscow ; ITAE, Moscow) ; Ballarino, A (CERN) ; Bottura, L (CERN) ; Gavrilkin, S Yu (Lebedev Inst.) ; Flükiger, R (CERN) ; Kruglov, V S (Kurchatov Inst., Moscow ; Moscow Phys. Eng. Inst.) ; Latushkin, S T (Kurchatov Inst., Moscow) ; Ryazanov, A I (Kurchatov Inst., Moscow ; Moscow Phys. Eng. Inst.) ; Scheuerlein, C (CERN) ; Semenov, E V (Kurchatov Inst., Moscow) et al.
Vibrating-sample magnetometry techniques has been used for investigation of the electrophysical characteristics of several types of modern commercial multistrand composite wires based on Nb$_{3}$Sn superconducting compound at temperatures that were measured 4.2, 7, and 12 K in magnetic fields up to 8 T before and after irradiation of the samples by fast (32-MeV) protons to fluences values 3 × 10$^{16}$, 1 × 10$^{17}$, 3 × 10$^{17}$, and 1 × 10$^{18}$ cm$^{–2}$. All samples irradiated to fluences values up to 1 × 10$^{17}$ cm$^{–2}$ exhibited growth of the critical current density, which was most sharply pronounced in strong magnetic fields at lower temperatures. [...]
2017 - 3 p.
- Published in : Tech. Phys. Lett. 43 (2017) 574-576
|
|
|
7.
|
Variation of $T_c$, lattice parameter and atomic ordering in $Nb_3Sn$ platelets irradiated with 12 MeV protons: correlation with the number of induced Frenkel defects
/ Flükiger, R (CERN ; Geneva U.) ; Spina, T (CERN) ; Cerutti, F (CERN) ; Ballarino, A (CERN) ; Scheuerlein, C (CERN) ; Bottura, L (CERN) ; Zubavichus, Y (Kurchatov Inst., Moscow) ; Ryazanov, A (Kurchatov Inst., Moscow ; Moscow Phys. Eng. Inst.) ; Svetogovov, RD (Kurchatov Inst., Moscow) ; Shavkin, S (Kurchatov Inst., Moscow) et al.
$Nb_3Sn$ platelets with thicknesses between 0.12 and 0.20 mm produced by a high isostatic pressure process at 1250 °C were irradiated at 300 K with 12 MeV protons. The effects of irradiation on the lattice parameter a, the atomic order parameter S and the transition temperature $T_c$ were measured as a function of proton fluence. [...]
2017 - 11 p.
- Published in : Supercond. Sci. Technol. 30 (2017) 054003
|
|
|
8.
|
Artificial Pinning in Nb$_3$Sn Wires
/ Spina, Tiziana (CERN) ; Ballarino, Amalia (CERN) ; Bottura, Luca (CERN) ; Scheuerlein, Christian (CERN) ; Flukiger, Rene (CERN)
Two different processes are known to create “artificial” pinning centers in superconductors: 1) high energy irradiation; and 2) nanoinclusions. Own results on the critical current density $J_c$ of $Nb_3Sn$ wires after irradiation by protons are compared to the effects obtained by neutrons (on the same wires) and by nanoinclusions from the literature. [...]
2017 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 27 (2017) 8001205
In : Applied Superconductivity Conference, Denver, CO, USA, 4 - 9 Sep 2016, pp.8001205
|
|
|
9.
|
Correlation Between the Number of Displacements Per Atom and $T_c$ After High-Energy Irradiations of Nb$_3$Sn Wires for the HL-LHC
/ Spina, T (CERN) ; Scheuerlein, C (CERN) ; Richter, D (CERN) ; Ballarino, A (CERN) ; Cerutti, F (CERN) ; Esposito, L S (CERN) ; Lechner, A (CERN) ; Bottura, L (CERN) ; Flükiger, R (CERN)
In order to predict the irradiation effects in the quadrupoles of the High-Luminosity Large Hadron Collider accelerator at the European Organization for Nuclear Research (CERN) during operation up to a luminosity of 4000 fb^-1, an irradiation program was carried out on industrial Taand Ti-added Nb$_{3}$Sn wires. Wire samples from the same batch were irradiated with high-energy protons (65 MeV and 24 GeV, up to 1.4×10^21 m^-2) and neutrons (> 0.1 MeV, up to 1.8×10^22 m^-2). [...]
2016 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 26 (2016) 6001405
In : 12th European Conference on Applied Superconductivity, Lyon, France, 06 - 10 Sep 2015, pp.6001405
|
|
|
10.
|
Variation of the Critical Properties of Alloyed Nb-Sn Wires After Proton Irradiation at 65 MeV and 24 GeV
/ Spina, T (CERN) ; Scheuerlein, C (CERN) ; Richter, D (CERN) ; Bordini, B (CERN) ; Bottura, L (CERN) ; Ballarino, A (CERN) ; Flukiger, R (CERN)
A recent proton irradiation study on Ta and Ti alloyed industrial multifilamentary Nb_3Sn wires has now been extended to fluences up to 1.38 × 10^21 p/m^2, the Bragg peak region being located outside of the wire. In the present work, magnetization measurements were performed up to 14 K and 10 T, to follow and determine with more precision the development of the upper critical field B_c2 with fluence. [...]
2015 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 25 (2015) 6000505
In : Applied Superconductivity Conference 2014, Charlotte, NC, USA, 10 - 15 Aug 2014, pp.6000505
|
|
e-postvarsel
eller abonner på 
RSS.