Complete Muon Collider Cooling Channel Design and Simulations
- MuPlus, Inc., Newport News, VA (United States)
Using a series of 21st century inventions and developments, a practical cooling channel has been shown by theoretical and numerical simulations to be capable of reducing the 6-D emittance of a muon beam by almost six orders of magnitude. However, this is not enough to make a compelling case to pursue a muon collider as the next energy frontier machine. To make that case, Parametric-resonance Ionization Cooling (PIC) has been proposed as the final 6-D cooling stage for a high-luminosity muon collider. Combining muon ionization cooling with parametric resonant dynamics should allow an order of magnitude smaller final equilibrium transverse beam emittances than conventional ionization cooling alone. In this scheme, a half-integer parametric resonance is induced in a cooling channel causing the beam to be naturally focused with the period of the channel’s free oscillations. Thin absorbers placed at the focal points then cool the beam’s angular divergence through the usual ionization cooling mechanism where each absorber is followed by RF cavities. Since the same type of cooling channel can be used for Reverse EMittance EXchange (REMEX) to reduce the transverse emittances by another factor of ten, PIC and REMEX together can provide two orders of magnitude luminosity increase of an energy frontier muon collider. The order of magnitude increase in luminosity that PIC alone could bring is enough to make a muon collider Higgs factory a compelling option. In this case, the s-channel production with cooled beam energy width the same as the predicted resonance width is a unique advantage to study the Higgs particle properties. One of the PIC challenges is the compensation of beam aberrations over a sufficiently wide parameter range while maintaining the dynamical stability with correlated behavior of the horizontal and vertical betatron motion and dispersion. In this report, we describe how the design of the PIC cooling channel was developed and evolved under the STTR Grant as we addressed the design requirements and challenges.
- Research Organization:
- MuPlus, Inc., Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- Thomas Jefferson National Accelerator Facility
- DOE Contract Number:
- SC0007634
- OSTI ID:
- 1494821
- Type / Phase:
- STTR (Phase II)
- Report Number(s):
- DOE-MuPlus-07634
- Country of Publication:
- United States
- Language:
- English
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