TY - JOUR ID - TI - Employing Inner Triplet Upgrade in Cold Mass Cooling Design for Large Hadron Collider AU - F.M. Alshimmary AU - A.F. Almaliki AU - S.H. Alhadithi PY - 2009 VL - 2 IS - 1 SP - 19 EP - 22 JO - Iraqi Journal of Applied Physics Letters مجلة الرسائل العراقية في الفيزياء التطبيقية SN - 1999656X 29586488 AB - A luminosity upgrade of the CERN Large Hadron Collider (LHC) is planned to coincide with the expected end of life of the existing inner triplet quadrupole magnets. The upgraded inner triplet will have much larger heat loads to be removed from the magnets by the cryogenics system. As part of the LHC Accelerator Research Program (LARP), a design study has been completed to investigate the required characteristics of the cold mass cooling system within the framework of a design temperature profile. These characteristics are the beam pipe annulus, collar radial cooling channels, yoke radial cooling channels, yoke longitudinal cooling channels, and heat exchanger connecting pipe. Using these parameters in conjunction with energy deposition calculations, longitudinal and radial temperature profiles for an entire inner triplet are calculated and presented.

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