AN OVERVIEW OF THE PLANNED JEFFERSON LAB 12GeV HELIUM REFRIGERATOR UPGRADE

摘要

In February 2006, Jefferson Laboratory in Newport News, VA, received "Critical Decision 1" (CD-I) approval to proceed with the engineering and design of the long anticipated upgrade to increase the beam energy of CEBAF, the Continuous Electron Beam Accelerator Facility, from 6 GeV to 12 GeV This will require the installation of 10 new cryomodules, and additional 2.1-K refrigeration beyond the available 4600 W to handle the increased heat loads Additionally, a new experimental hall, Hall D, is planned that will require the installation of a small, available refrigerator This paper will present an overview of the integration of the new proposed refrigeration system into CEBAF, the installation of the available refrigerator for Hall D, and includes planned work scope, current schedule plans and project status.