A Cost-Effective High-Configurable Iris Diaphragm Beam Halo Detector

Over the past few years several beam halo detection techniques have been invented to minimize the beam interception rate and accuracy of measurements. However, instrumentation for these measurements are complex systems and are not modular. The systems tend to be specialized for a single facility, or even a single part of a beamline. Also, these systems can hardly be reused or moved to another location of the beamline even if the beam (core and halo) properties are very similar at the two locations. The systems are also very expensive to implement. The accelerator community needs a profile monitor that is modular and generally applicable, which can be implemented at multiple sites with only minor modifications. Euclid Techlabs, LLC submits this proposal to introduce a cost-effective design of a profile monitor, which can be easily configured to work with various primary beam energies and sites. This novel iris diaphragm detector we propose utilizes the current signal produced by the primary beam on the Tungsten iris blades and assistive scintillators with a PMT (where applicable) to measure the beam halo. It is an “add-on” design that can be implemented with as little as a 6-way vacuum cross and a control system, and is conveniently transferrable to other measurement locations if needed. The iris blades guarantee an accurate mapping of the transverse profile distribution. A full evaluation of the detector system, including the Monte Carlo analysis of the beam - matter interactions, and the first version of mechanical design of the system. At the end of Phase I we will fabricate a prototype vacuum-compatible iris diaphragm and test it at Euclid, AWA, and SPEAR3 (if time permits). The iris diaphragm beam profile detector can be easily adopted by many accelerator facilities. The geometry of the detector and readout system are universal to all beam types, therefore only small modifications are needed to implement this system in a specific accelerator. Moreover, not only research facilities will benefit from this product, but also the industrial, and medical accelerator and TEM communities can use the product. Hence it is a highly marketable product and we anticipate a large market size.