The Coupled Cavity Linac (CCL) section of the Spallation Neutron Source (SNS) is a normal-conducting, 805 MHz structure that accelerates the ion beam from 87 MeV to 186 MeV. Located between the Drift Tube Linac (DTL) and the Superconducting Linac (SCL), it consists of four modules designed for efficient beam acceleration.
The medium beta superconducting linac section of the Spallation Neutron Source (SNS) consists of 11 cryomodules, each housing three 6-cell, 805 MHz cavities with a geometric beta of 0.61. Designed and built by Jefferson Lab, these modules follow the warm linac section to accelerate protons, with medium-beta cavities performing well in operations.
The high-beta superconducting linac section of the Spallation Neutron Source (SNS) is the final, high-energy acceleration stage, utilizing 12-17 cryomodules (depending on configuration) with 6-cell cavities to accelerate the
beam to over 1 GeV. Operating at 805 MHz, this section follows the medium-beta section, providing the main acceleration to maximum energy.