page_title: Compact Linear Collider
section_title: Power pulsing and cooling
hierarchical_section_title: Compact Linear Collider / CLIC detector / Power pulsing and cooling
caption_attribution_description: English: Gas-cooling vertex streamlines.
context_page_description: The Compact Linear Collider is a concept for a future linear particle accelerator that aims to explore the next energy frontier. CLIC would collide electrons with positrons and is currently the only mature option for a multi-TeV linear collider. The accelerator would be between 11 and 50 km long, more than ten times longer than the existing Stanford Linear Accelerator in California, USA. CLIC is proposed to be built at CERN, across the border between France and Switzerland near Geneva, with ﬁrst beams starting by the time the Large Hadron Collider has ﬁnished operations around 2035.
  The CLIC accelerator would use a novel two-beam acceleration technique at an acceleration gradient of 100 MV/m, and its staged construction would provide collisions at three centre-of-mass energies up to 3 TeV for optimal physics reach. Research and development are being carried out to achieve the high precision physics goals under challenging beam and background conditions.
  CLIC aims to discover new physics beyond the Standard Model of particle physics, through precision measurements of Standard Model properties as well as direct detection of new particles.
context_section_description: Strict requirements on the material budget for the vertex and tracking system do not allow the use of conventional liquid cooling systems for CLICdet. Therefore, it is proposed that a dry gas cooling system will be used for this inner region. Air gaps have been factored into the design of the detector to allow the flow of the gas, which will be air or Nitrogen. To allow for effective air cooling, the average power consumption of the Silicon sensors in the vertex detector needs to be lowered. Therefore, these sensors will operate via a current-based power pulsing scheme: switching the sensors from a high to low power consumption state whenever possible, corresponding to the 50 Hz bunch train crossing rate.
caption: Gas-cooling vertex streamlines.
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