Performance of the LHC magnet system (2009)
The LHC magnet system, essentially composed of superconducting magnets operating at 1.9 K, has been largely commissioned in 2007-08. Before the serious incident of 19th September 2008, the magnet...
Report of the Task Force on the Incident of 19th September 2008 at the LHC (2009)
Bajko, M, Bertinelli, F, Catalan-Lasheras, N, Claudet, S, Cruikshank, P, Dahlerup-Petersen, K, ...
This report summarizes the findings and recommendations of the AT department Task Force established to investigate the 19th September 2008 incident which occurred in sector 3-4 of the LHC. It...
Assessment of the basic Parameters of the CERN SPL (2008)
Brunner, O, Calatroni, S, Ciapala, Edmond, Eshraqi, M, Garoby, R, Gerigk, F, ...
The construction of a 4GeV Superconducting Proton Linac (the SPL) is now part of the Long Term Plan of CERN, and the construction of Linac4, its low-energy front end, has begun. For mid-2011 the...
Plans for a Superconducting H$^{-}$ LINAC (SPL) at CERN (2008)
Brunner, O, Calatroni, S, Ciapala, Edmond, Garoby, R, Gerigk, F, Lombardi, A M, ...
As part of the upgrade of the LHC injector complex at CERN, the construction of a 4 GeV Superconducting Proton Linac (the SPL, in fact an H- accelerator) is planned to begin in 2012. Depending upon...
Choice of Frequency, Gradient and Temperature for a Superconducting Proton Linac (2008)
Gerigk, F, Brunner, O, Calatroni, S, Ciapala, Edmond, Eshraqi, M, Garoby, R, ...
The construction of a Superconducting Proton Linac is planned at CERN during the next decade. It is foreseen to be constructed in two stages: a low duty cycle, low-power linac (LPSPL) as an injector...
Performance of the Main Dipole Magnet Circuits of the LHC during Commissioning (2008)
Verweij, A, Baggiolini, V, Ballarino, A, Bellesia, B, Bordry, Frederick, Cantone, A, ...
During hardware commissioning of the Large Hadron Collider (LHC), 8 main dipole circuits are tested at 1.9 K and up to their nominal current. Each dipole circuit contains 154 magnets of 15 m length,...
Venturini-Delsolaro, W, Baggiolini, V, Ballarino, A, Bellesia, B, Bordry, Frederick, Cantone, A, ...
The LHC is a complex machine requiring more than 7400 superconducting corrector magnets distributed along a circumference of 26.7 km. These magnets are powered in 1446 different electrical circuits...
Conceptual Design of Superferric Magnets for PS2 (2008)
Bottura, L, Karppinen, M, Kirby, G, MacCaferri, R, Maglioni, C, Parma, V, ...
We analyze feasibility and cost of a superferric magnet design for the PS2, the 50 GeV ring that should replace the PS in the CERN injector chain. Specifically, we provide the conceptual design of...
Assembled in 8 continuous segments of approximately 2.7 km length each, the He II cryostats for the 1232 cryodipoles and 474 Short Straight Sections (SSS housing the quadrupoles) must fulfil tight...
Bourcey, N, Campos, P, López, R, Poncet, A, Parma, V
After 4 years of activity, the assembly of approximately 500 Short Straight Sections (SSS) for the LHC has come to an end at the beginning of 2007. This activity, which was initially foreseen in...
Leak-Tight Welding Experience from the Industrial Assembly of the LHC Cryostats at CERN (2008)
Bourcey, N, Campos, P, Chiggiato, P, Limon, P, Mongelluzzo, A, Musso, G, ...
The assembly of the approximately 1700 LHC main ring cryostats at CERN involved extensive welding of cryogenic lines and vacuum vessels. More than 6 km of welding requiring leak tightness to a rate...
Poncet, A, Struik, M, Trigo, J, Parma, V
The about 1700 LHC main ring super-conducting magnets are supported within their cryostats on 4700 low heat in leak column-type supports. The supports were designed to ensure a precise and stable...
Poncet, A, Cruikshank, P, Parma, V, Strubin, P, Tock, JP, Tommasini, D
In 2001, the project management decided to perform at CERN the final assembly of the LHC superconducting magnets with cryostat parts and cold masses produced by European Industry in large series....
A SC Upgrade for the REX-ISOLDE Accelerator at CERN (2008)
Pasini, M, Calatroni, S, Delruelle, N, Lindroos, M, Parma, V, Trilhe, P, ...
Conceptual design of superferric magnets for PS2 (2007)
Bottura, L, MacCaferri, R, Maglioni, C, Parma, V, De Rijk, G, Rossi, L, ...
We analyze feasibility and cost of a superferric magnet design for the PS2. Specifically, we provide the conceptual design of dipole and quadrupoles, including considerations on cryogenics and...
Baseline Configuration of the Cryogenic System for the International Linear Collider (2007)
Casas-Cubillos, J, Chorowski, M, Claudet, S, Ganni, R, Klebaner, A, Parma, V, ...
The paper discusses the main constraints and boundary conditions and describes the baseline configuration of the International Linear Collider (ILC) cryogenic system. The cryogenic layout,...
The LHC insertions require 50 specific superconducting quadrupoles in the matching sections, operating either in 1.9 K superfluid helium or in boiling helium at 4.5 K. These magnets are assembled...
The Alignment Jacks of the LHC Cryomagnets (2004)
Dwivedi, J, Kumar, A, Goswami, S G, Madhumurthy, V, Parma, V, Soni, H C
The precise alignment of the 1232 dipoles, 474 Short Straight Sections (SSS) and some other components of the LHC collider, requires the use of 6800 jacks. The specific requirements and the need for...
Results of Magnetic Axis Measurements on a Prototype Main Lattice Quadrupole for the LHC (2004)
Smirnov, N, Buzio, M, Deferne, G, Parma, V, Rohmig, P, Tortschanoff, Theodor
More than 470 twin aperture lattice quadrupoles are needed for the Large Hadron Collider (LHC) under construction at CERN. The lattice quadrupole, assembled with correction magnets in its helium...
Bourcey, N, Capatina, O, Parma, V, Poncet, A, Rohmig, P, Serio, L, ...
The recent commissioning and operation of the LHC String 2 have given a first experimental validation of the global thermal performance of the LHC lattice cryostat at nominal cryogenic conditions....