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3.
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Progress report of the Engineering Data Management System Task Force CERN-CN-96-002
/ Chevalley, J L (CERN) ; De Jonghe, J (CERN) ; Faber, G (CERN) ; Farthouat, Philippe (CERN) ; Ferran, M (CERN) ; Flegel, Wilfried (CERN) ; Hameri, A P (CERN) ; Hauviller, Claude (CERN) ; Hervé, A (CERN) ; Høimyr, Nils-Joar (CERN) et al.
An Engineering Data Management System (EDMS) is a collection of tools and rules, which enables, as a minimum, a body of vetted information to be built up in a safe pla and be easily accessible to the users [...]
CERN-CN-96-002 ; ALICE-INT-96-02 ; ATL-TECH-17 ; CERN-ALICE-INT-96-02 ; CERN-ECP-96-002 ; CERN-ECP-96-02 ; CERN-ECP-96-2 ; CERN-EST-96-002-ISS ; CERN-LHC-96-003-VAC ; CMS-TN-96-016 ; TN-PPE-TA-1-96-05.
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1996. - 13 p.
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4.
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Micromegas : a high-granularity position-sensitive gaseous detector for high particle-flux environments
/ Giomataris, Ioanis (DAPNIA, Saclay) ; Rebourgeard, P C (DAPNIA, Saclay) ; Robert, J P (DAPNIA, Saclay) ; Charpak, Georges (DAPNIA, Saclay)
We describe a novel structure for a gaseous detector that is under development at Saclay. It consists of a two-stage parallel-plate avalanche chamber of small amplification gap (100 microm) combined with a conversion-drift space. [...]
DAPNIA-SED-95-04.-
Saclay : DAPNIA, 1996 - 20 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 376 (1996) 29-35
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6.
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Cryogenics for CERN experiments : past, present and future
/ Bremer, J ; Dauvergne, J P ; Delikaris, D ; Delruelle, N ; Kesseler, G ; Passardi, Giorgio ; Rieubland, Jean Michel ; Tischhauser, Johann ; Haug, F
Use of cryogenics at CERN was originated (in the 1960s) by bubble chambers and the associated s.c. solenoids. [...]
CERN-LHC-96-006-ECR.-
Geneva : CERN, 1997 - 7 p.
Report
Access to fulltext document: PDF;
In : 16th International Cryogenic Engineering Conference and International Cryogenic Materials Conference, Kitakyushu, Japan, 20 - 24 May 1996, pp.173-177
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8.
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Operation of the cryogenic system for superconducting cavities in LEP
/ Barranco-Luque, M ; Claudet, S ; Gayet, P ; Solheim, N O ; Winkler, G
CERN-LHC-96-010-ACR.-
Geneva : CERN, 1996 - 5 p.
Report
Access to fulltext document: PDF TIF;
In : 16th International Cryogenic Engineering Conference and International Cryogenic Materials Conference, Kitakyushu, Japan, 20 - 24 May 1996, pp.103-106
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10.
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Design and implementation of synchrotron radiation masks for LEP2
/ Lepeule, P ; Menot, C ; Veness, R J M
Estimates of photon flux for LEP2 have predicted unacceptable background levels within the detectors of the four LEP experiments. As part of the solution to this problem, synchrotron radiation masks have been installed within the experimental vacuum Chambers close to the interaction points. [...]
CERN-LHC-96-008-VAC.-
Geneva : CERN, 1996 - 4 p.
Report
Access to fulltext document: PDF TIF; External links: Abstract from JACoW; Published version from JACoW
In : 5th European Particle Accelerator Conference, Sitges, Barcelona, Spain, 10 - 14 Jun 1996, pp.2503-2505
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17.
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CERN EDMS study 96
: progress report - second progress report of the engineering data management system Task Force. 31 Jan 1997
/ Dittus, F B ; Faber, G ; Hauviller, Claude ; Kuipers, J P M ; Nicquevert, Bertrand ; Onnela, A ; Price, M ; Witzeling, W ; Delamare, Christophe ; Hameri, A P et al.
CERN-IT-97-002 ; ATLAS-TECH-NO-023 ; CERN-ALICE-97-18-INTERNAL-NOTE ; CERN-ECP-97-003 ; CERN-ECP-97-03 ; CERN-ECP-97-3 ; CERN-EST-97-001-ISS ; CERN-LHC-97-003-VAC.
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1997. - 14 p.
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24.
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Displacement and emission currents from PLZT 8/65/35 and 4/95/5 excited by a negative voltage pulse at the rear electrode
/ Benedek, G ; Boscolo, I ; Handerek, J ; Marchesini, S ; De Martinis, C ; Riege, H ; Scurati, A
It is shown that non-prepoled PLZT ceramics, both in ferroelectric and antiferroelectric phase, emit intense current bursts when a negative exciting voltage is applied to the rear surface of the cathode. The spontaneous polarization induced in the bulk by applying the field through the cathode disk, creates a sheet of negative charge on the diode boundary of the ferroelectric. [...]
CERN-LHC-97-010-DLO.-
Geneva : CERN, 1997 - 8 p.
Report
- Published in : Nucl. Instrum. Methods Phys. Res., A 393 (1997) 469-473
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29.
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A High Resolution Spallation Driven Facility at the CERN-PS to Measure Neutron Cross Sections in the Interval from 1 eV to 250 MeV
: a Relative Performance Assessment
/ Rubbia, Carlo ; Andriamonje, Samuel A ; Bouvet-Bensimon, D ; Buono, S ; Cappi, R ; Cennini, P ; Gelès, C ; Goulas, I ; Kadi, Y ; Pavlopoulos, P et al.
In the proposed facility with 24 GeV PS beam on a Lead target, the number of produced neutrons exceeds 760 per proton. [...]
CERN-LHC-98-002-EET-Add.1.
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1998. - 14 p.
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30.
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A high resolution spallation driven facility at the CERN-PS to measure neutron cross sections in the interval from 1 eV to 250 MeV
/ Rubbia, Carlo ; Andriamonje, Samuel A ; Bouvet-Bensimon, D ; Buono, S ; Cappi, R ; Cennini, P ; Gelès, C ; Goulas, I ; Kadi, Y ; Pavlopoulos, P et al.
CERN-LHC-98-002-EET.
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1998. - 70 p.
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32.
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Experience with the LEP vacuum system at energies above 90 GeV and future expectations
/ Billy, J C ; Bojon, J P ; Hilleret, Noël (CERN) ; Jiménez, M ; Laugier, I
The LEP storage ring has been operated at energies above 90 GeV for more than 1000 hours during 1997. Because of the rapid increase with the beam energy of the power radiated as synchrotron light, the vacuum system has been submitted to very stringent conditions as far as power evacuation and photon stimulated gas desorption are concerned. [...]
CERN-LHC-98-004-VAC.-
Geneva : CERN, 1998 - 4 p.
Report
Access to fulltext document: PDF;
In : 6th European Particle Accelerator Conference, Stockholm, Sweden, 22 - 26 Jun 1998, pp.314-316
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33.
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Development of a fast gaseous detector : "micromegas"
/ Barouch, G ; Bay, A ; Bouchigny, S ; Charpak, Georges ; Derré, J ; Didierjean, François ; Faivre, Jean-Claude ; Giomataris, Ioanis ; Kochowski, Claude ; Kunne, Fabienne et al.
CERN-LHC-98-005-EET.-
Geneva : CERN, 1999 - 17 p.
Report
- Published in : Nucl. Instrum. Methods Phys. Res., A 423 (1999) 32
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34.
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The liquid krypton calorimeter cryogenics for the NA48 experiment
/ Bremer, J ; Cundy, Donald C ; Dauvergne, J P ; Gonidec, A ; Kesseler, G ; Kubischta, Werner ; Linser, G ; Schinzel, D ; Taureg, Hans ; Wertelaers, Piet
The NA48 cryogenic system has to provide stable thermal conditions (120 K) in a 9000 liter liquid krypton calorimeter, and has to ensure safe and loss free storage of the liquid during idle periods. Direct cooling of the krypton by nitrogen is used in emergency cases, while an intermediate cooler, containing saturated liquid argon at around 10 bar (117 K) is used under normal operation conditions when high thermal stability is needed. [...]
CERN-LHC-98-007-ECR.-
Geneva : CERN, 1998 - 5 p.
Report
Access to fulltext document: PDF;
In : 17th International Cryogenic Engineering Conference, Bournemouth, UK, 14 - 17 Jul 1998, pp.643-646
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39.
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Experimental Verification of Neutron Phenomenology in Lead and Transmutation by Adiabatic Resonance Crossing in Accelerator Driven Systems
/ Abánades, A ; Aleixandre, J ; Andriamonje, Samuel A ; Angelopoulos, Angelos ; Apostolakis, Alcibiades J ; Arnould, H ; Belle, E ; Bompas, C A ; Brozzi, Delecurgo ; Bueno, J et al.
Energy and space distributions of spallation neutrons (from 2.5 and 3.57 GeV/c CERN proton beams) slowing down in a 3.3 x 3.3 x 3 m3 lead volume and neutron capture rates on long-lived fission fragments 99 Tc and 129 I demonstrate that Adiabatic Resonance Crossing (ARC) can be used to eliminate efficiently such nuclear waste and validate innovative simulation..
CERN-LHC-98-012-EET.-
Geneva : CERN, 1999 - 15 p.
Report
- Published in : Phys. Lett. B
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40.
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Overview of Single-particle Nonlinear Dynamics
/ Todesco, Ezio
We give an overview of the single-particle non linear dynamics in circular accelerators. The main topics are: integration of equations of motion, fast symplectic tracking, dynamic aperture definition, long-term methods, quality factors and lattice optimization. [...]
CERN-LHC-99-001-MMS.-
Geneva : CERN, 1998 - 17 p.
Report
Access to fulltext document: PDF;
In : 16th Advanced ICFA Beam Dynamics Workshop on Nonlinear and Collective Phenomena in Beam Physics, Arcidosso, Italy, 1 - 5 Sep 1998, pp.157-172
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41.
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New Projects of Crystal Extraction at IHEP 70 GeV Accelerator
/ Afonin, A.G. (Serpukhov, IHEP) ; Biryukov, V.M. (Serpukhov, IHEP) ; Breese, M.B.H. (Surrey U.) ; Chepegin, V.N. (Serpukhov, IHEP) ; Chesnokov, Yu.A. (Serpukhov, IHEP) ; Fedotov, Yu.S. (Serpukhov, IHEP) ; Ivanov, Yu.M. (St. Petersburg, INP) ; Kotov, V.I. (Serpukhov, IHEP) ; Terekhov, V.I. (Serpukhov, IHEP) ; Troyanov, E.F. (Serpukhov, IHEP) et al.
Using channeling in a 5-mm crystal with bending angle of 0.65 mrad, a record high efficiency, over 60%, of particle extraction from accelerator was achieved. The extracted beam intensity was up to 5.2 x 10**11 protons per spill of ~ 0.5 s duration. [...]
hep-ex/0111028; CERN-LHC-99-002-MMS; CERN-LHC-99-02-MMS; CERN-LHC-99-2-MMS; CERN-LHC-99-002-MMS.-
Geneva : CERN, 1999 - 3 p.
Report
- Published in : , pp. 53-55
Fulltext: lhc-99-002 - PDF; lhc-99-002_cov - PDF; arXiv:hep-ex_0111028 - PDF; IEEE Published version, local copy: PDF; External link: Full-text at JACoW Server
In : 18th Biennial Particle Accelerator Conference, New York, NY, USA, 29 Mar - 2 Apr 1999, pp.e-proc. 53
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43.
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The AD Vacuum System : Construction and Commissioning ; rev. version
/ Brouet, M ; Hansen, J ; Klette, H ; Strubin, Pierre M
CERN has built a new experimental facility, called the Antiproton Decelerator (AD), by transforming two existing machines: the "Antiproton Collector" (AC) and the "Antiproton Accumulator" (AA). To achieve adequate beam performance once the antiproton beam is decelerated to its final value of 0.1 GeV/c, it was necessary to lower the average pressure by nearly two orders of magnitude. [...]
CERN-LHC-99-004-VAC.-
Geneva : CERN, 1999 - 4 p.
Report
Fulltext: PS.GZ; IEEE Published version, local copy: PDF;
In : 18th Biennial Particle Accelerator Conference, New York, NY, USA, 29 Mar - 2 Apr 1999, pp.e-proc. 562
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48.
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Experience with the Multi-Year Implementation of an Industrial Control System
/ Kuhn, H K ; Gayet, P ; Juillerat, A C ; Rabany, Michel ; Wollès, J C
In 1990, CERN passed a multi-year purchasing and installation contract for the LEP 200 Cryogenics control system with ABB, one of the world's leading suppliers of integrated Distributed Control Systems (DCS). A financial framework provided over a period of eight years the required supplies. [...]
CERN-LHC-2000-001-IAS.-
Geneva : CERN, 2000 - 4 p.
Report
Access to fulltext document: PDF;
In : 7th European Particle Accelerator Conference, Vienna, Austria, 26 - 30 Jun 2000, pp.e-proc. 2432
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49.
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The LEP Vacuum System : A Summary of 10 Years of Successful Operation
/ Billy, J C ; Bojon, J P ; Gröbner, Oswald ; Hilleret, Noël (CERN) ; Jiménez, M ; Laugier, I ; Strubin, Pierre M
he LEP accelerator is now operating regularly above 100 GeV and its vacuum system is submitted to the impact of energetic photons with a critical energy approaching 1 MeV. The consequences of this high energy on the photon induced desorption will be reviewed in the light of the various photon absorption mechanisms for aluminium. [...]
CERN-LHC-2000-002-VAC.-
Geneva : CERN, 2000 - 4 p.
Report
Access to fulltext document: PDF;
In : 7th European Particle Accelerator Conference, Vienna, Austria, 26 - 30 Jun 2000, pp.e-proc. 2286
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50.
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Application of Ferroelectric Cathodes to Enhance the Ion Yield in the Caesar Source at LNS
/ Boscolo, I ; Celona, L ; Cialdi, S ; Ciavola, G ; Cipriani, D ; Gammino, S ; Handerek, J ; Marletta, S ; Riege, H ; Somarè, G et al.
With increasing RF power the electron concentration in the plasma of ECR ion sources is decreasing in comparison to the ion concentration, so that the plasma is charging up positively. Direct injection of electrons into the ECR plasma can increase the electron charge density and the ion current yield. [...]
CERN-LHC-2000-003-DLO.-
Geneva : CERN, 2000 - 4 p.
Report
Access to fulltext document: PDF; External link: Published version
In : 7th European Particle Accelerator Conference, Vienna, Austria, 26 - 30 Jun 2000, pp.e-proc. 1631
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54.
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Application of Bent Crystals at IHEP 70-GeV Accelerator to Enhance the Efficiency of its Usage
/ Kotov, V.I. (Serpukhov, IHEP) ; Afonin, A.G. (Serpukhov, IHEP) ; Biryukov, V.M. (Serpukhov, IHEP) ; Chesnokov, Yu.A. (Serpukhov, IHEP) ; Galyaev, N.A. (Serpukhov, IHEP) ; Gres, V.N. (Serpukhov, IHEP) ; Maisheev, V.A. (Serpukhov, IHEP) ; Medvedev, V.A. (Serpukhov, IHEP) ; Minchenko, A.V. (Serpukhov, IHEP) ; Terekhov, V.I. (Serpukhov, IHEP) et al.
Bent crystal was extracting 70-GeV protons with average intensity 4x10$^{11}$ (as measured in external beamline) per spill of ~1.6 s duration, in parallel to the simultaneous work of two internal targets in the accelerator ring. An additional crystal, placed in the external beamline, was deflecting a small part of the extracted beam with intensity ~10$^7$ protons toward another physics experiment. [...]
hep-ex/0111001; CERN-LHC-2000-007-MMS; CERN-LHC-2000-7; CERN-LHC-2000-07; CERN-LHC-2000-007; CERN-LHC-2000-007-MMS.-
Geneva : CERN, 2000 - 5 p.
Report
- Published in : , pp. 364-366
Access to fulltext document: PDF; Fulltext: PDF; External links: Fulltext; Full-text at JACoW Server
In : 7th European Particle Accelerator Conference, Vienna, Austria, 26 - 30 Jun 2000, pp.e-proc. 364
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58.
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Conclusions on 8 Years Operation of the LEP 4.5 K Refrigeration System at CERN
/ Bangert, N ; Claudet, S ; Gayet, P ; Sanmartí, M
After 11 years of operation the Large Electron/Positron collider (LEP) was stopped in November 2000. Since 1993 a cryogenic system has been used to supply up to 72 superconducting (SC) cavity modules, using four large liquid-helium refrigerators at 4.5 K. [...]
CERN-LHC-2001-004-ACR.-
Geneva : CERN, 2002 - 9 p.
Report
Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.239-246
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59.
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A Cryogenic High-Reynolds Turbulence Experiment at CERN
/ Bézaguet, Alain-Arthur ; Dauvergne, J P ; Knoops, S ; Lebrun, P ; Pezzetti, M ; Pirotte, O ; Bret, J L ; Chabaud, B ; Garde, G ; Guttin, C et al.
The potential of cryogenic helium flows for studying high-Reynolds number turbulence in the laboratory has been recognised for a long time and implemented in several small-scale hydrodynamic experiments. With its large superconducting particle accelerators and detector magnets, CERN, the European Laboratory for Particle Physics, has become a major world center in helium cryogenics, with several large helium refrigerators having capacities up to 18 kW @ 4.5 K. [...]
CERN-LHC-2001-006-ECR.-
Geneva : CERN, 2002 - 9 p.
Report
- Published in : AIP Conf. Proc. 613 (2002) 1399-1406
Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.1399-1406
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60.
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Conclusions from 12 Years Operational Experience of the Cryoplants for the Superconducting Magnets of the LEP Experiments
/ Barth, K ; Dauvergne, J P ; Delikaris, D ; Passardi, Giorgio
The Large Electron Positron Collider (LEP) has ended its last physics run in November 2000, and it is at present being dismantled to liberate the tunnel for the Large Hadron Collider (LHC) project to be completed by end of 2005. The cryogenic systems for the superconducting solenoid and focusing quadrupoles for the two LEP experiments, ALEPH and DELPHI, each supplying a cooling power of 800 W/4.5 K entropy equivalent, have accumulated more then 100'000 hours of running time. [...]
CERN-LHC-2001-007-ECR.-
Geneva : CERN, 2002 - 9 p.
Report
- Published in : AIP Conf. Proc. 613 (2002) 247-254
Access to fulltext document: PDF;
In : Cryogenic Engineering Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.247-254
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61.
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First Cryogenic Testing of the ATLAS Superconducting Prototype Magnets
/ Delruelle, N ; Dudarev, A ; Haug, F ; Mayri, C ; Orlic, J P ; Passardi, Giorgio ; Pirotte, O ; ten Kate, H H J
The superconducting magnet system of the ATLAS detector will consist of a central solenoid, two end-cap toroids and the barrel toroid made of eight coils (BT) symmetrically placed around the central axis of the detector. All these magnets will be individually tested in an experimental area prior to their final installation in the underground cavern of the LHC collider. [...]
CERN-LHC-2002-001-ECR.-
Geneva : CERN, 2002 - 4 p.
Report
- Published in : IEEE Trans. Appl. Supercond. 12 (2002) 1336-1338
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : 17th International Conference on Magnet Technology, CERN, Geneva, Switzerland, 24 - 28 Sep 2001, pp.1336-8
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62.
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Application of the Code THEA to the CONDOPT Experiment in SULTAN
/ Bottura, L ; Bruzzone, P L (EPFL/CRP, Fusion Technology Div., Villigen) ; Marinucci, C
The CONDOPT (CONDuctor OPTimization) experiment has been recently completed in SULTAN. The current sharing behaviour of Nb$_{3}$Sn samples was assessed as a function of the number of cyclic loads experienced during current sweeps in a 10 T background field. [...]
CERN-LHC-2002-002-MTA.-
Geneva : CERN, 2002 - 5 p.
Report
- Published in : IEEE Trans. Appl. Supercond. 12 (2002) 1528-1532
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : 17th International Conference on Magnet Technology, CERN, Geneva, Switzerland, 24 - 28 Sep 2001, pp.1528-32
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63.
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Transient Stability Analysis of the SeCRETS Experiment in SULTAN
/ Bottura, L ; Bruzzone, P L (EPFL/CRP, Fusion Technology Div., Villigen) ; Marinucci, C
We present here the results of the analysis of the stability experiment SeCRETS, performed on two Nb$_{3}$Sn cable-in-conduit conductors with the same amount of total copper stabilizer, but different degree of segregation. The model used for the analysis, including superconducting strands, conductor jacket and helium, is solved with the code GandalfTM. [...]
CERN-LHC-2002-003-MTA.-
Geneva : CERN, 2002 - 5 p.
Report
- Published in : IEEE Trans. Appl. Supercond. 12 (2002) 1524-1527
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : 17th International Conference on Magnet Technology, CERN, Geneva, Switzerland, 24 - 28 Sep 2001, pp.1524-1527
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65.
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RF test benches for electron cloud studies
/ Iriso-Ariz, U ; Caspers, Friedhelm ; Laurent, Jean Michel ; Mostacci, A
In the framework of the CERN program on the electron cloud effects in existing and future accelerators, a coaxial multipacting test stand was built. It consists of a 100 mm diameter vacuum chamber forming the outer conductor and 6 wires cage-aerial-type as the inner conductor. [...]
CERN-LHC-2002-005-VAC; CERN-PS-2002-025-RF.-
Geneva : CERN, 2002 - 4 p.
Accelerator Technology; Report
Fulltext: PDF; Published version from CERN: PDF; External link: Published version from JACoW
In : 8th European Particle Accelerator Conference, Paris, France, 3 - 7 Jun 2002, pp.2562
Proceedings ECLOUD'02 : Mini Workshop on Electron Cloud Simulations for Proton and Positron Beams, Paris, France, 3 - 7 Jun 2002, pp.275-287
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66.
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Ion-stimulated gas desorption yields and their dependence on the surface preparation of stainless steel
/ Mahner, E ; Hansen, J ; Küchler, D ; Malabaila, M ; Taborelli, M
Ion-induced gas desorption yields were investigated for 4.2 MeV/u lead ions incident on 316 LN stainless steel surfaces. Focussed on a possible application for the Low Energy Ion Ring (LEIR) vacuum system, the influence of surface treatments like chemical etching, electropolishing and gold-coating on the desorption yields was studied with accelerator-type vacuum chambers. [...]
CERN-LHC-2002-006-VAC.-
Geneva : CERN, 2002 - 4 p.
Accelerator Technology; Report
Access to fulltext document: PDF; External link: Published version from JACoW
In : 8th European Particle Accelerator Conference, Paris, France, 3 - 7 Jun 2002, pp.2568
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67.
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Application of Object-Based Industrial Controls for Cryogenics
/ Casas-Cubillos, J ; Gayet, P ; Gomes, P ; Pezzetti, M ; Sicard, Claude Henri ; Varas, F J
The first application of the CERN Unified Industrial Control system (UNICOS) has been developed for the 1.8 K refrigerator at point 1.8 in mid-2001. This paper presents the engineering methods used for application development, in order to reach the objectives of maintainability and reusability, in the context of a development done by an external consortium of engineering firms. [...]
CERN-LHC-2002-007-IAS.-
Geneva : CERN, 2002 - 4 p.
Accelerator Technology; Report
Access to fulltext document: PDF; External link: Published version from JACoW
In : 8th European Particle Accelerator Conference, Paris, France, 3 - 7 Jun 2002, pp.2013
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69.
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Low Temperature Gaseous Helium and very High Turbulence Experiments
/ Pietropinto, S ; Baudet, C ; Castaing, B ; Chabaud, B ; Gagne, Y ; Hébral, B ; Ladam, Y ; Lebrun, P ; Pirotte, O ; Poulain, C et al.
Cryogenic gaseous helium gives access to extreme turbulent experimental conditions. The very high cooling helium flow rates available at CERN have been used to reach Reynolds numbers up to Re ~ 10**7 in a round jet experiment. [...]
CERN-LHC-2002-014-ECR.-
Geneva : CERN, 2002 - 5 p.
Report
Access to fulltext document: PDF;
In : 19th International Cryogenic Engineering Conference, Grenoble, France, 22 - 26 Jul 2002, pp.813-816
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70.
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Test Results of a 1.2 kg/s Centrifugal Liquid Helium Pump for the ATLAS Superconducting Toroid Magnet System
/ Pengo, R ; Junker, S ; Passardi, Giorgio ; Pirotte, O ; ten Kate, H H J
The toroid superconducting magnet of ATLAS-LHC experiment at CERN will be indirectly cooled by means of forced flow of liquid helium at about 4.5 K. A centrifugal pump will be used, providing a mass flow of 1.2 kg/s and a differential pressure of 40 kPa (ca. [...]
CERN-LHC-2002-013-ECR.-
Geneva : CERN, 2002 - 5 p.
Report
Access to fulltext document: PDF;
In : 19th International Cryogenic Engineering Conference, Grenoble, France, 22 - 26 Jul 2002, pp.71-74
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77.
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Flower, a Model for the Analysis of Hydraulic Networks and Processes
/ Bottura, L ; Rosso, C
We have developed in the past years a model that describes hydraulic networks that are typical of the cryogenic interconnection of superconducting magnets. The original model, called Flower, was used mostly to provide consistent boundary conditions for the operation of a magnet. [...]
CERN-LHC-2002-023-MTA.-
Geneva : CERN, 2003 - 17 p.
Report
- Published in : Cryogenics 43 (2003) 215-223
Access to fulltext document: PDF;
In : 5th Workshop on Computation of Thermohydraulic Transients in Superconductors, Karlsruhe, Germany, 16 - 18 Sep 2002, pp.215-223
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79.
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Analytical Calculation of Current Distribution in Multistrand Superconducting Cables
/ Bottura, L ; Breschi, M ; Fabbri, M G
In recent years the problem of current distribution in multistrand superconducting cables has received increasing attention for large scale superconductivity applications due to its effect on the stability of fusion magnets and the field quality of accelerator magnets. A modelling approach based on distributed parameters has revealed to be very effective in dealing with long cables made of some tens or hundreds of strands. [...]
CERN-LHC-2002-021-MTA.-
Geneva : CERN, 2003 - 5 p.
Report
- Published in : IEEE Trans. Appl. Supercond. 13 (2003) 1710-13
Access to fulltext document: PDF; IEEE Published version, local copy: PDF;
In : Applied Superconductivity Conference, Houston, TX, USA, 4 - 9 Aug 2002, pp.1710-13
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81.
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Development of a Mass Flowmeter based on the Coriolis Acceleration for Liquid, Supercritical and Superfluid Helium
/ De Jonge, T ; Patten, T ; Rivetti, A ; Serio, L
Beginning in the 1980's, Coriolis meters have gained generalised acceptance in liquid applications with a worldwide installed base of over 300,000 units. To meet the demands of cryogenic applications below 20 K, off-the-shelf Coriolis meters have been used, with minor design modifications and operational changes. [...]
CERN-LHC-2002-019-ACR.-
Geneva : CERN, 2002 - 5 p.
Report
Access to fulltext document: PDF;
In : 19th International Cryogenic Engineering Conference, Grenoble, France, 22 - 26 Jul 2002, pp.647-650
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82.
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Measurements of Multi-Layer Insulation at High Boundary Temperature, using a Simple Non-Calorimetric Method
/ Mazzone, L ; Ratcliffe, G ; Rieubland, Jean Michel ; Vandoni, Giovanna
In spite of abundant literature, the thermal performance of Multi-Layer Insulation (MLI) still deserves dedicated investigation for specific applications, as the achievable insulation strongly depends on installation details. Furthermore, less accurate information is available for warm than for cold boundaries, since errors due to edge effects in small test benches increase strongly with warm boundary temperature. [...]
CERN-LHC-2002-018-ECR.-
Geneva : CERN, 2002 - 5 p.
Report
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In : 19th International Cryogenic Engineering Conference, Grenoble, France, 22 - 26 Jul 2002, pp.847-850
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83.
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Cryogenics for the CERN Solar Axion Telescope (CAST) using a LHC Dipole Prototype Magnet
/ Barth, K ; Passardi, Giorgio ; Pezzetti, M ; Pirotte, O ; Riege, H ; Vullierme, B ; Walckiers, L ; Zioutas, Konstantin
The axion, an as yet hypothetical particle predicted from the solution of the strong CP problem, constitutes a prime candidate for the galactic dark matter and also arises in supersymmetry and superstring theories. If existing, axions should be copiously produced in stellar interiors and there are theoretical expectations for a low-energy axion emission spectrum peaked around a mean energy of ~ 4.4 keV. [...]
CERN-LHC-2002-017-ACR-ECR-MTA.-
Geneva : CERN, 2002 - 5 p.
Report
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In : 19th International Cryogenic Engineering Conference, Grenoble, France, 22 - 26 Jul 2002, pp.145-148
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84.
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Computer Simulation of the Cool Down of the ATLAS Liquid Argon Barrel Calorimeter
/ Korperud, N ; Bremer, J ; Fabre, C ; Owren, G ; Passardi, Giorgio
The ATLAS electromagnetic barrel calorimeter consists of a liquid argon detector with a total mass of 120 tonnes. This highly complicated structure, fabricated from copper, lead, stainless steel and glass-fiber reinforced epoxy will be placed in an aluminum cryostat. [...]
CERN-LHC-2002-016-ECR.-
Geneva : CERN, 2002 - 5 p.
Report
Access to fulltext document: PDF;
In : 19th International Cryogenic Engineering Conference, Grenoble, France, 22 - 26 Jul 2002, pp.699-702
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