Dear AP colleagues,

Thank everyone for your effort on the ASAC meeting. Overall, we got a mark 
of "A". Nevertheless, there is a list of homework waiting us. Maybe we can
go through this list on our video next Tuesday.

Here I am listing the comments, in order of the close-out meeting summary, 
only on AP relevant issues. 
(1) (all) More, detailed linac physics work is needed
(2) (all) One needs to seriously consider adjustable quad for DTL. There is 
    about 90 MeV section without tuning, and this is a significant portion
(3) (D. Bousard) linac RF overhead marginal. At the present level, one 
    should not assume that we can retune to the same energy with missing 
    cavity.
(4) (D. Proch) Stronger interface on linac is needed. There are two examples
    (a) cavity design and PS
    (b) HOM/BBU study
(5) (M. Harrison) Strong interaction between AP and diagnostics group is a
    must, merely passing parameters is not enough. One really needs to 
    understand what we are measuring, how to measure, and what are the
    algorithms.
(6) (P. Schemmor) Front End simulation should assume the presently measured 
    (undesired) characteristics, instead of ideal distribution, for 
    simulation. Thus one can evaluate worst-case impact.
(7) (G. Rees) Ring related issues
    (a) Extraction reliability is highly important. It is hard to imagine that
        there can actually be no loss in the case of one kicker failure.
        One should consider having hot spare kicker.
    (b) The injection timing should be adjustable so that during short-pulse
        commissioning/operation, one can extract the beam as soon as the
        injection ends (instead of wait and then extract).
    (c) Collimators are needed! One needs to carefully check trip rate and 
        allowed activation level to ensure smooth commissioning.
    (d) One should consider using 200 kW dump during linac commissioning to
        simplify problem.
    (e) Sextupoles are very useful (Some suggest: how can you live 
        without it?). However, the balance with budget and the final decision
        should be the project office's.
    (f) Bellow shielding: no suggestion as whether it is needed but ISIS 
        shielded design shows no mechanical problem during operation. 
(8) (M. Harrison) Commissioning can be very disruptive on constructions. 
    One should strongly consider alternative commissioning plan as lumping
    the period for commissioning. 
(9) Next suggested ASAC: Feb. 5, 2001, Berkeley.

Thanks.
Jie