1. DIMAD
REVMOC

2. x x x y y y
Twiss fctns
(from REVMOC data)
Dispersion

3. Matched
phase
space
(5E-07 mr)

4. “Pencil beam” studies (5E-09 mr, 40k µ– initially)
beam loss (#)

6. 781 e– in halo

11. Most particles lost due to low energy
> collimate after a dipole
> enhanced loss after straight section
Cloud of electrons around the IP
> cautious estimate: few 10-5 of µ beam
> ≤ 90% of these from last ≈ 30 m
> remaining 10% from uniform around ring
Long low-energy tail
> obviously from nearby decays
Results biased by uniform decay energy

12. Several REVMOC inaccuracies to be remedied
using for 1/c, for π, etc.
single precision REALs …
Check DIMAD against MAD8
differences with the IR gradient dipoles?
Add correct energy spectrum for µ-decay
Add synchrotron radiation for primary & decay p.
Add feature to locate decay point for a lost particle
Need a lattice that works.