Početna stranica > Cryogenic Studies for the Proposed CERN Large Hadron Electron Collider (LHeC) |
Article | |
Report number | CERN-ATS-2012-009 |
Title | Cryogenic Studies for the Proposed CERN Large Hadron Electron Collider (LHeC) |
Author(s) | Haug, F (CERN) |
Collaboration | LHeC study team Collaboration |
Publication | 2011 |
Imprint | 15 Jan 2011 |
Number of pages | 10 |
In: | AIP Conf. Proc. 1434 (2011) 69-77 |
In: | Cryogenic Engineering Conference & International Cryogenic Material Conference: Transactions of the Cryogenic Engineering Conference - CEC, Spokane, WA, USA, 13 - 17 Jun 2011 |
DOI | 10.1063/1.4706906 |
Subject category | Accelerators and Storage Rings |
Accelerator/Facility, Experiment | CERN LHeC |
Abstract | The LHeC (Large Hadron electron Collider) is a proposed future colliding beam facility for lepton-nucleon scattering particle physics at CERN. A new 60 GeV electron accelerator will be added to the existing 27 km circumference 7 TeV LHC for collisions of electrons with protons and heavy ions. Two basic design options are being pursued. The first is a circular accelerator housed in the existing LHC tunnel which is referred to as the "Ring-Ring" version. Low field normal conducting magnets guide the particle beam while superconducting (SC) RF cavities cooled to 2 K are installed at two opposite locations at the LHC tunnel to accelerate the beams. For this version in addition a 10 GeV re-circulating SC injector will be installed. In total four refrigerators with cooling capacities between 1.2 kW and 3 kW @ 4.5 K are needed. The second option, referred to as the "Linac-Ring" version consists of a race-track re-circulating energy-recovery type machine with two 1 km long straight acceleration sections. The 944 high field 2 K SC cavities dissipate 30 kW at CW operation. Eight 10 kW @ 4.5 K refrigerators are proposed. The particle detector contains a combined SC solenoid and dipole forming the cold mass and an independent liquid argon calorimeter. Cooling is done with two individual small sized cryoplants; a 4.5 K helium, and a 87 K liquid nitrogen plant. |