from refl1d.names import *

nickel = Material("Ni")
sample = silicon(0, 5) | nickel(100, 5) | air

instrument = SNS.Liquids()
M = instrument.simulate(
    sample,
    T=[0.3, 0.7, 1.5, 3],
    slits=[0.06, 0.14, 0.3, 0.6],
    uncertainty=5,
)

problem = FitProblem(M)