Minutes --  Mucool meeting -- 25 Feb '00


scribe: May-Anne Cummings

Jim Norem
------------
Suggested a picosecond beam monitor (resolution 18 ps), for a "destructive"
measurement of the fine structure (time profile) of muon beams, as an 
alternative to a secondary emission monitor.

This is described in Review of Scientific Instruments, Vol. 43, No. 2 Feb. 1972 

RF R&D (John/Al)
________________
Schedules for 805 MHz, 200MHz cavities and solenoid (200MHz) presented

   > 805 MHz cavity:
      1. Installation       (Mar)
      2. Measurements of low-power, open cell cavity   (Apr)
      3. Magnet   (May)
      4. Design & build prototype high-power open cell cavity 
      5. Pillbox cavity (w/Be surfaces)       
      6. Test in high RF and mag. field
      7. High-powered open cell cavity run at 805 MHz

    Total cost estimated at $277,000, 33 person-months labor

   > 200 MHz cavity:
      1. Install 200 MHz tetrode tube       (later '00)
      2. Network analyzer, tune and heating tests   (Feb '01)
      3. High-power cavity prototype   (May '01)
              .. discussion of Be window aperture ..
      4. Prototype testing, varying mag. field     (late '01)
      5. Additional testing  (May '02)
      6. Second iteration   (Jan '03) 
      7. Second testing    (May '03) 

    Total cost estimated at $1.36M, 45 person-months labor

   > Solenoid
    805 solenoid too small. Estimated cost ~$1M, delivery May '01



LH2 Absorber tests (M. A. Cummings)
---------------------------------------

Next step in FNAL safety procedures is determining the geography, hence
which division's rules we have to deal with. Discussed
the IPNS at ANL as possible test beam site.

Cooling Simulations (D. Kaplan/Greg Penn)
-------------------------------------------

Comparing results of DPGeant and Icool simulations of "Case 2" FOFO design.
"pi"-mode (DK, DPGeant) and "pi/2" mode (GP, Icool). Both see similar losses
and emittances. DK noted that with no dE/dx and no acceleration, sees a
loss of 1/2 of the beam particles. Discussion of heat dissapation in the
Be windows.

Spiral Cooling (Yaroslav)
---------------------------

Detailed discussion of cooling on spiral orbits. emittance exchange 
necessitates curving beam orbits. this is induced by rotating gradients
using dipoles. Much algebra (and it's probably all correct...)

All this results in 3-d cooling, with possibly less beam loss, and decreases 
the energy spread, therefore a consideration for both cooling channel and
minicooling