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CERN Document Server 2,037 Datensätze gefunden  1 - 10nächsteEnde  gehen zum Datensatz: Die Suche hat 0.23 Sekunden gedauert. 
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(100)
Results from Atomic Layer Deposition and Tunneling Spectroscopy for Superconducting RF Cavities / Norem, J (Argonne) ; Antoine, C Z (Saclay) ; Cooley, L (Fermilab) ; Elam, J W (Argonne) ; Moore, J F ; Pellin, M J (Argonne) ; Proslier, Th (IIT, Chicago) ; Zasadzinski, J (IIT, Chicago)
FERMILAB-CONF-08-544-TD.- 2008 - 3 p. External links: Fulltext from Fermilab; Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.WEPP099
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2.
(91)
Study of Radiation From RF Cavities / Sandstrom, Rikard (Geneva U.) ; Huang, D (IIT, Chicago) ; Norem, J (Argonne)
2008 - 3 p. External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.MOPP106
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3.
(56)
A low energy muon spin rotation and point contact tunneling study of niobium films prepared for superconducting cavities / Junginger, Tobias (Helmholtz-Zentrum, Berlin ; Lancaster U. (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Calatroni, S. (CERN) ; Sublet, A. (CERN) ; Terenziani, G. (CERN) ; Prokscha, T. (PSI, Villigen) ; Salman, Z. (PSI, Villigen) ; Suter, A. (PSI, Villigen) ; Proslier, T. (Argonne) ; Zasadzinski, J. (IIT, Chicago)
Point contact tunneling (PCT) and low energy muon spin rotation (LE-muSR) are used to probe, on the same samples, the surface superconducting properties of micrometer thick niobium films deposited onto copper substrates using different sputtereing techniques: diode, dc magnetron (dcMS) and HIPIMS. The combined results are compared to radio-frequency tests performances of RF cavities made with the same processes. [...]
arXiv:1703.08635.- 2017-11-07 - 14 p. - Published in : Supercond. Sci. Technol. 30 (2017) 125013 Fulltext: PDF; External links: 00002 Scanning electron microscope (SEM) images of the three samples used for the point contact tunneling measurements.; 00011 Asymmetry function versus time at \unit[50]{K} for the HIPIMS sample in a longitudinal field of 0,2 and 10 mT.; 00004 Surface resistance $R\msub{S}$ as a function of peak surface magnetic field $B\msub{p}$ for two quarter wave cavities at \unit[4.2]{K}.; 00007 (a) Example of conductance curves displaying the zero bias conductance peak obtained on the HIPIMS sample, the curves are shifted by 0.25 for more clarity.; 00001 Top: Schematics of the \unit[1.3]{GHz} sputtering setup as used to produce the dcMS and HIPIMS samples. The samples are located at the equator, the region of largest diameter. Bottom: Position of the HIE-ISOLDE Nb/Cu samples i9 and Tbi taken from the mock-up cavity for PCT and LE-$\mu$SR measurements respectively.; 00013 Asymmetry function of muons stooped in an N$_2$-overlayer on top of the HIPIMS sample.; 00010 Asymmetry functions obtained at zero field and $T\approx$\unit[3.5]{K} for the HIPIMS sample at the surface and the dcMS sample at about \unit[100]{nm} depth. The HIPIMS sample shows strong signs of muon dynamics possibly related to surface magnetism. The asymmetry function of the dcMS sample recovers to about 1/3 of its initial value, which signifies that each muon experiences a static magnetic field, while the fields seen by different muons are randomly distributed.; 00003 Surface resistance $R\msub{S}$ as a function of peak surface magnetic field $B\msub{p}$ for three thin film cavities.; 00005 Surface resistance $R\msub{S}$ as a function of peak surface magnetic field $B\msub{p}$ for three elliptical cavities.; 00000 Top: Schematics of the \unit[1.3]{GHz} sputtering setup as used to produce the dcMS and HIPIMS samples. The samples are located at the equator, the region of largest diameter. Bottom: Position of the HIE-ISOLDE Nb/Cu samples i9 and Tbi taken from the mock-up cavity for PCT and LE-$\mu$SR measurements respectively.; 00008 Penetration of the magnetic field in three Nb/Cu samples at $T\approx$\unit[3.5]{K}; 00014 Stopping profiles of muons in niobium of different energy calculated with the TRIM.SP software.; 00009 Penetration depth change measured on a \unit[1.3]{GHz} HIPIMS cavity as a function of $f(T)=1/\sqrt{1-(\frac{T}{T\msub{c}})^4}-1$ \cite{Junginger_PRSTAB_2015}.; 00015 Asymmetry function of muons stopped on a N$_2$ layer grown on a Ni plate.; 00012 Hop rate $\nu$ as a function of temperature for the HIPIMS sample. The line is a guide to the eye.; 00006 Summary of the PCTS measurement performed on 3 niobium samples deposited on Cu substrate with 3 different deposition methods; (a) HIPIMS, (b) standard DC magnetron sputtering or dcMS and (c) diode sputtering. For each sample, 80 to 100 junctions were measured. A set of about 10 representative normalized tunneling conductance curves are represented on the left (shifted by 0.25 for more clarity). The statistics of the superconducting gap $\Delta$ and inelastic parameter $\Gamma/\Delta$ as extracted from the fits are displayed in the middle. The temperature dependence of a characteristic tunnel junction is shown on the right with the corresponding temperature dependence of $\Delta$. (d) Example of conductance spectrum shifted by 0.25 that show no hint of superconductivity and considered as normal metal junctions $\Delta$ = 0 meV. (e) Example of tunnel junction showing very peculiar background for V$\ge\Delta$, the curves have been shifted by 1 for more clarity.
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4.
(43)
The Interactions of Surface Damage on RF Cavity Operation / Norem, Jim (ANL, Argonne, Illinois) ; Bross, Alan (Fermilab, Batavia, Illinois) ; Hassanein, Ahmed (ANL, Argonne, Illinois) ; Insepov, Zeke (ANL, Argonne, Illinois) ; Li, Derun (LBNL, Berkeley) ; Moretti, Alfred (Fermilab, Batavia, Illinois) ; Qian, Zubao (Fermilab, Batavia, Illinois) ; Rimmer, Robert (Jefferson Lab, Newport News, Virginia) ; Seidman, David N (NU, Evanston, Illinois) ; Torun, Yagmur (IIT, Chicago, Illinois) et al.
2006 - 3 p. External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.1361
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5.
(36)
SSC closed-orbit correction / Moore, Cristopher ; Murphy, T ; Norem, J ; Zizman, M
LBL-17260.- Berkeley, CA : Lawrence Berkeley Nat. Lab., 1984 - 5 p.
In : Workshop on Accelerator Physics Issues for a Superconducting Super Collider, Ann Arbor, MI, USA, 12 - 17 Dec 1983, pp.78-82
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6.
(29)
Mechanisms Limiting High Gradient RF Cavities / Norem, J ; Hassanein, A ; Konkashbaev, I
2003 - 3 p. External link: Published version from JACoW
In : 20th IEEE Particle Accelerator Conference, Portland, OR, USA, 12 - 16 May 2003, pp.1180
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7.
(28)
201 MHz Cavity R&D for MUCOOL and MICE / Li, Derun (LBNL, Berkeley) ; Bross, Alan (Fermilab, Batavia, Illinois) ; Moretti, Alfred (Fermilab, Batavia, Illinois) ; Norem, Jim (ANL, Argonne, Illinois) ; Norris, Barry (Fermilab, Batavia, Illinois) ; Phillips, Larry (Jefferson Lab, Newport News, Virginia) ; Reep, Michael (UMiss, University, Mississippi) ; Rimmer, Robert (Jefferson Lab, Newport News, Virginia) ; Stirbet, Mircea (Jefferson Lab, Newport News, Virginia) ; Summers, Don (UMiss, University, Mississippi) et al.
2006 - 3 p. External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.1367
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8.
(28)
Breakdown in RF Cavities / Norem, Jim ; Hassanein, Ahmed ; Insepov, Zeke ; Konkashbaev, Isak
Kharkov : Kharkiv Univ., 2005 - 3 p. External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1886
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9.
(26)
Key directions for research and development of superconducting radio frequency cavities / Belomestnykh, S. (Fermilab ; Stony Brook U.) ; Posen, S. (Fermilab) ; Bafia, D. (Fermilab) ; Balachandran, S. (Natl. High Mag. Field Lab.) ; Bertucci, M. (LASA, Segrate) ; Burrill, A. (SLAC) ; Cano, A. (Fermilab) ; Checchin, M. (Fermilab) ; Ciovati, G. (Jefferson Lab) ; Cooley, L.D. (Natl. High Mag. Field Lab.) et al.
Radio frequency superconductivity is a cornerstone technology for many future HEP particle accelerators and experiments from colliders to proton drivers for neutrino facilities to searches for dark matter. [...]
arXiv:2204.01178 ; FERMILAB-PUB-22-241-SQMS-TD. -
Fermilab Library Server - eConf - Fulltext - Fulltext
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10.
(26)
The MUCOOL RF Program / Norem, Jim (ANL, Argonne, Illinois)
2006 External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.1358
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