93

*STTR Project: Development and Demonstration of 6‑Dimensional Muon Beam Cooling—Muons, Inc., 552 N. Batavia Avenue, Batavia, IL 60510; 757-870-6943; http://www.muonsinc.com

Dr. Rolland P. Johnson, Principal Investigator, rol@muonsinc.com

Dr. Rolland P. Johnson, Business Official, rol@muonsinc.com

DOE Grant No. DE-FG02-06ER86282

Amount: $750,000

Research Institution

Fermi National Accelerator Laboratory

Batavia, IL

Future accelerators, such as muon colliders and neutrino factories, will depend on the development of robust and affordable techniques for ionization cooling, a method for shrinking the emittances of a particle beam. This proposal will develop an experiment to prove that effective six-dimensional (6D) muon beam cooling can be achieved using an ionization-cooling channel based on helical and solenoidal magnets in a novel configuration. This Helical Cooling Channel (HCC) experiment will be designed using simulations and prototypes. In Phase I, a novel design for a helical solenoid magnet and emittance matching sections was developed. Plans for prototyping a section of the helical solenoid magnet were made, in order to test its magnetic, mechanical, and thermodynamic properties. In Phase II, the simulation/reconstruction program will be extended to optimize the experimental parameters. The optimization will involve improving beam cooling statistical significance, understanding systematic errors, and exploring engineering simplifications and their ramifications. A three-coil prototype superconducting helical solenoid will be constructed and tested, and an experimental protocol will be established in collaboration with Fermilab.

Commercial Applications and Other Benefits as described by the awardee: The technology should enable very bright muon beams for fundamental research using muon colliders, neutrino factories, and muon beams with new characteristics. The most important application would be an energy frontier muon collider that achieves high luminosity by virtue of small emittance rather than large muon flux.