Editing Compact Linear Collider (section)

{{Short description|Concept for a linear particle accelerator}}
[[Image:CLIC-Logo-Color-72.png|thumb|Compact Linear Collider project]]
The '''Compact Linear Collider''' ('''CLIC''') is a concept for a future [[linear particle accelerator]] that aims to explore the next [[energy]] frontier. CLIC would collide [[electron]]s with [[positron]]s and is currently the only mature option for a multi-TeV linear [[collider]]. The accelerator would be between {{cvt|11|and|50|km|0}} long,<ref name=Burrows_CLIC_CERN-2018>
{{cite report
 |editor1-last=Burrows|editor1-first=P. N.
 |display-editors=et al.
 |id=CERN-2018-005-M
 |arxiv=1812.06018
 |doi= 10.23731/CYRM-2018-002 |doi-access=free
 |title= The Compact Linear Collider (CLIC) - 2018 Summary Report
 |location=Geneva, Switzerland
 |year=2018
 |author1=CERN
}}</ref> more than ten times longer than the existing [[SLAC National Accelerator Laboratory|Stanford Linear Accelerator (SLAC)]] in California, US. CLIC is proposed to be built at [[CERN]], across the border between [[France]] and [[Switzerland]] near [[Geneva]], with first [[Particle beam|beams]] starting by the time the [[Large Hadron Collider]] (LHC) has finished operations around 2035.<ref name=Burrows_CLIC_CERN-2018/>

The CLIC accelerator would use a novel two-beam acceleration technique at an [[acceleration]] [[gradient]] of 100&nbsp;M[[volt|V]]/m, and its staged construction would provide [[collision]]s at three [[center of mass|centre-of-mass]] [[energy|energies]] up to 3&nbsp;TeV for optimal [[physics]] reach.<ref name="Burrows_CLIC_CERN-2018" /> [[Research and development]] (R&D) are being carried out to achieve the high precision physics goals under challenging beam and [[background radiation|background]] conditions.

CLIC aims to discover new physics beyond the [[Standard Model]] of particle physics, through precision [[measurement]]s of [[Standard Model]] properties as well as direct detection of new particles. The collider would offer high sensitivity to [[electroweak interaction|electroweak]] states, exceeding the predicted precision of the full LHC programme.<ref name="Burrows_CLIC_CERN-2018" /> The current CLIC design includes the possibility for electron beam [[polarization (waves)|polarisation]].

The CLIC collaboration produced a Conceptual Design Report (CDR) in 2012,<ref name=cdr_page>
{{cite web
 |title=Conceptual Design Report CLIC CDR
 |url=https://clicdp.web.cern.ch/content/conceptual-design-report
 |website=CLIC detector and physics study
 |publisher=[[CERN]]
 |access-date=31 July 2019
}}</ref> complemented by an updated energy staging scenario in 2016.<ref name=Burrows_CLIC_CERN-2016>
{{cite report
 |editor1-last=Burrows|editor1-first=P. N.
 |display-editors=et al.
 |id=CERN-2016-004
 |arxiv=1608.07537
 |doi= 10.5170/CERN-2016-004 |doi-access=free
 |title= Updated Baseline for a Staged Compact Linear Collider
 |location=Geneva, Switzerland
 |year=2016
 |last1=CERN
 |first1=Geneva
}}</ref> Additional detailed studies of the physics case for CLIC, an advanced design of the accelerator complex and the detector, as well as numerous R&D results are summarised in a recent series of CERN Yellow Reports.<ref name="Burrows_CLIC_CERN-2018" /><ref name=new_physics_rep/><ref name=2018_proj_imp/><ref name=detector_R_and_D/>