Design and Manufacture of a Main Beam Quadrupole Model for CLIC

The Main Beam Quadrupole (MBQ) magnets represent one of the most populated families of Compact Linear Collider (CLIC) magnets. In total more than 4000 units of 4 different types with the same bore radius of 5 mm and field gradient of 200 T/m but with different magnetic length are needed. An extremely high precision and mechanical stability are necessary in order to fulfill the magnetic and stabilization requirements as defined in the beam optics studies. A magnet design has been proposed and several quadrupole prototypes of different length have been produced targeting a high mechanical precision. Magnetic calculation, constructional design and the first test results are presented.