Ilc Cryogenic Systems Reference Design

Abstract

A Global Design Effort (GDE) began in 2005 to study a TeV scale electron-positron linear accelerator based on superconducting radio-frequency (RF) technology, called the International Linear Collider (ILC). In early 2007, the design effort culminated in a reference design for the ILC, closely based on the earlier TESLA design. The ILC will consist of two 250 GeV linacs, which provide positron-electron collisions for high energy physics research. The particle beams will be accelerated to their final energy in superconducting niobium RF cavities operating at 2 kelvin. At a length of about 12 km each, the main linacs will be the largest cryogenic systems in the ILC. Positron and electron sources, damping rings, and beam delivery systems will also have a large number and variety of other superconducting RF cavities and magnets, which require cooling at liquid helium temperatures. Ten large cryogenic plants with 2 kelvin refrigeration are envisioned to cool the main linacs and the electron and positron sources. Three smaller cryogenic plants will cool the damping rings and beam delivery system components predominately at 4.5 K. This paper describes the cryogenic systems concepts for the ILC.

Imposing strong correlated energy spread on relativistic bunches with transverse deflecting cavities

“…Table I summarizes components of two different designs of the TCBC at the beam energies of 250 MeV (right after BC1) and 1 GeV (right before BC2). Both designs are based on the cryomodules [25] and 13-cell 3.9 GHz transverse deflecting cavities [26] designed for the International Linear Collider (ILC) [3]. The schematic layouts of TCAVs inside the cryomodules are shown in Fig.…”

“…Here we provide with a TCAV-based dechirper design for the MaRIE Injector Test Stand (MITS) for the beam energy of 250 MeV beam energy, which fits inside a single standard ILC cryomodule [25]. The superconducting quadrupoles with reasonable peak gradient are integrated in the scheme to provide the effective negative drift.…”

ESS accelerator cryogenic plant

“…The ESS cryogenic system will use the following formula for determining an installed cryogenic capacity at a given temperature, which is an extension of these proposed by International Linear Collider (ILC) (Peterson et al 2007) and Large Hadron Collider (LHC) (Lebrun 2009):…”

Superconducting RF Cavity Development for the International Linear Collider

“…17 shows the conceptual diagram for the ILC cryogenics. The conceptual design for this system is in progress [42], and a design pressure of 2 bar was adapted recently for the cavity, cryomodule and cryogenic system. Further system engineering will be carried out to determine the most cost effective design in view of both construction and long-term operation, in reference to the extensive experience at CERN-LHC.…”