Interaction Environment and Detectors

Interaction chamber

            - M. Zepf, QUB

System hardware

            - M.Borghesi, QUB

Laser plane distribution

            - J.Collier, RAL

Tracking system

            - M.Kraft, SOU

Debris reduction

            - P.McKenna, SUPA

Diagnostics

            - D Neely, RAL

A common interaction chamber complete with radiological shielding will be designed and constructed to enable the different types of targetry and diagnostics to be installed and switched in a rapid manner. It is envisaged that the systems required for each particle beam type will be constructed on common specification “inserts”. The interaction chamber will be designed to accommodate secondary downstream equipment such as magnets if required. The aim of this aspect is to develop a device that receives the laser beam as an input, enables the appropriate laser-target interaction and delivers a “beamline” output of the appropriate particle in a diagnosed, cost effective and portable manner. Techniques for spent debris characterization, mitigation and removal will be investigated and implemented. In particular RF discharge and cryogenic technology will be implemented for debris disposal. Unwanted chamber activation will be minimized to acceptable levels using appropriately designed chamber hardware materials and catcher systems. Combining focal plane irradiation control and automatic focussing will enhance reliability and reproducibility for macro and micro/nano sized beams. Real time high repetition rate diagnostics, detectors and control technology to enhance and characterise the properties of the particle and radiation beams will be developed. For time resolved γ-ray detection, a Compton scattering based beam sampler coupled to an energy selective streak camera will be developed in order to deliver sub 3 ps temporal resolution of theγ-ray beam which will then be used to optimize and characterize the source.