Reference detector for small fields

The T-REF chamber 34091 provides a solution to the problem where to put a reference detector in small fields. The T-REF chamber is an easy-to-use large-area plane-parallel transmission reference chamber. From the minimum distance to the water surface on, there are no measurable perturbations of the beam. The very good signal-to-noise-ratio makes it an excellent option for use as a reference detector.