1. PROPERTIES OF NEUTRINO BEAM [Campanelli...]

1.1. Energy spectra (neutrinos per GeV)

for Pol = 0, +1 and -1;

E_μ = 5, 10, 20, 30 GeV;

at 250 m for R < 0.5 m,

at 1 km for R < 2 m,

at 730 km and 10000 km for R < 4 m.

1.2. Radial fluence (neutrinos per cm²) for

Pol = 0, +1 and -1;

and E_μ = 5, 10, 20, 30 GeV;

at 250 m, 1 km, 730 km and 10000 km.

1.3. Energy-radius correlation, average energy and average fluence for conditions of 1.1.

(Zero muon beam divergence.)

2. DIVERGENCE OF MUON BEAM [no assignment yet]

2.1. Radial fluence at 100 m for zero and non-zero (which?) muon beam divergence.

Establish an upper limit for the muon beam divergence.

(E_μ = 20 GeV, Pol = 0.)

3. MUON POLARIZATION [Blondel? Dydak? Placidi?...]

What level of muon polarization can be expected?

What is the preferred value of the muon polarization?

How well must the muon polarization be known?

How and how well is the muon polarization measured?

4. MUON MOMENTUM [no assignment yet]

How well must the average muon momentum be known?

How and how well is the muon momentum measured?

What range of muon momentum is wanted?

- for ν_τ appearance

- for ν_μ and ν_e disappearance

- for wrong-sign muon appearance

- wrong-sign electron appearance?

- for electron/muon ratio (NC/CC)

Is the muon momentum spread an issue?

5. INTENSITY OF STORED MUONS [Hernandez...]

What intensity of stored muons is wanted and why?

How well must the intensity of stored muons be known?

How and how well is the muon intensity measured?

Trade-off between momentum and intensity?

6. TIME STRUCTURE OF STORED MUONS [no assignment yet]

Is the time structure of stored muons important?

(linked to accumulation and replenishment mode)

7. GEOMETRY [no assignment yet]

Race track or dog bone? Or very long decay tunnel?

Dimensions

Tilt angles w.r.t. muon production complex

Pointing simultaneously to two different detector locations?

Requirements on the 'pointing accuracy'

Precision of L

8. BACKGROUNDS [Mokhov,...]

Neutrinos from pion/kaon decay

Neutrinos from muon decay in the arcs

Photons and neutrons in a nearby detector?

9. RADIATION and ENVIRONMENTAL ISSUES [Johnson, Mokhov,...]

10. POSITIVE AND/OR NEGATIVE MUONS? [Gomez, Hernandez, ...]

Is the opposite muon charge needed?

If so: switching or separate runs?

11. DISTANCE OF DETECTOR [Edgecock, ...]

What is the shortest distance of the detector given a certain irreducible background

- for ν_τ appearance

- for ν_μ and ν_e disappearance

- for wrong-sign muon appearance

- wrong-sign electron appearance?

- for electron/muon ratio (NC/CC)

Compare with 'practical' distances (CERN-LNGS, FNAL-Soudan, ...)

Constraints from matter effects

12. 'NEAR' DETECTOR CONSIDERATIONS [Gomez, ...]

Limitation from the knowledge of the neutrino cross-section?

Can K2K, MiniBOOne, I216, MINOS help in this respect?

How near is 'near'?

Limitation from backgrounds?

13. NEUTRINOS FROM pion/kaon DECAYS? [Dydak, Panman, ...]

Depend on the muon production scenario(s)...