Feedback from WG3

1
Feedback from WG3

• R. Garoby for WG3

2
Clear message

• Beam power of the p-driver must be as large as
  possible !
• The goal for the number of useful decays in the m
  storage ring for a given experiment has to be
  1E21/year.
• n experiments will mobilize the p driver for
  10 years (1E7 s/y).

3
Requests for clarification

• Wide diversity of needs for m experiments. Design
  is different if attached to a super-beam or a n
  factory.
• m energy in n factory
• Time structure of m beam
• Both polarities simultaneously
• Multiple base-lines
• Location of multiple experiments

Detailed characteristics !
Justification of 50 GeV Interest of later
upgrade ?
???
???
4
Analysis (responses)

• Super-beam experiments ask for very different
  proton beam energies for different base-lines
• Optimum p energy for a n factory is still in
  debate, but seems to be in the intermediate range
  ( 5-10 GeV)
• Proper analysis/optimization of low energy proton
  driver depends upon production cross-sections
• m experiments cannot share beam with n
  experiments. If this is correct, should the
  powers requested from the p driver be added ?

Need for a choice !
Need for a choice !
Need for HARP results !
Compatibility ?