Lens module : The gamma-ray lens is stabilized by a gimbal system, including a peripheral lens stiffening ring holding the various fine stabilization tools (sunsensor, starsensor, gyro). The gimbal will consist of two extrawide rugged Al-frames, while the lens will be stiffened by four deep Ti spars connecting an inner with an outer ring.

Detector module : The high-purity 3x3 germanium matrix is housed in a single cylindrical aluminum cryostat. Each of the single Ge bars is an n-type coaxial detector with dimensions of 1.5 cm x 1.5 cm x 4 cm and an internal electrode hole of 4-mm diameter.

The calibration-beamline at CESR. The setup for the lens calibration in the CESR cleanroom is an 18 m long optical bench consisting of an X-ray generator (E<150 keV), the gamma-ray lens, and the 3*3 Ge matrix detector.

Alignment : A small telescope equipped with a CCD camera is mounted in the center of the lens. Its role is to align the lens with respect to the calibration source and later to the astrophysical target. A pair of ball-bearings allow the telescope to rotate around an axis close to its optical an mechanical axis. This rotation axis defines the optical axis of the gamma-ray lens.

The telescope structure consists essentially of carbon fiber spars, aluminum fittings and honeycomb platforms. The spars and fittings have undergone a positive result of a strain test in Birmingham. It is mainly this “minimal design” that has brought the weight of CLAIRE below 500 kg.