Sa. Bogacz et al., A MU(+)MU(-) CRYSTAL COLLIDER CONCEPT, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 119(1-2), 1996, pp. 199-205
We describe a futuristic mu(+)mu(-) collider complex which uses a comb
ination of bent and straight silicon crystals for the circular confine
ment and to provide the horizontal and vertical focusing. It would als
o involve laser driven crystal acceleration and crystal cooling to enh
ance the luminosity. The design of a 250 x 250 GeV storage ring-collid
er is outlined here, including quantitative lattice design based on an
alternating gradient crystal cell. Two other functional cells (accele
rating and cooling) are also described in detail, The conceptual basis
for this collider is that the mu(+/-) beams are not destroyed by eith
er radiation like e(+/-) or hadronic interactions like <(p)over bar p>
, thus allowing for a full solid state collider. The muon lifetime in
a relativistic storage ring; number of revolutions scales like 300 B,
where B is the bending field. For a single bent Si crystals its bendin
g angle could easily reach a few mrad, therefore the equivalent bendin
g field is B similar to 1000 T, giving similar to 3 x 10(5) turns in t
he storage ring before the next mu(+/-) beam is injected, Assuming int
egration of all four functionalities (trending, alternate focusing, co
oling, acceleration) into corresponding cells such a collider would ha
ve a few thousand of various Si crystal components.