1. Hit density at scoring planes at r=10, 30, and 50 cm.

2. Photon Hit Densities R=10 cm R=30 cm R=50 cm Hits/cm2 Z (cm) Z (cm)
ILC 1% Occupancy limit: 20/cm2

3. Charged Hadrons Hit Density
R=10 cm
R=30 cm
R=50 cm
Hits/cm2
Z (cm)
Z (cm)
Z (cm)
ILC 1% Occupancy limit: 0.2/cm2
R=50 cm
x100 for one bunch

4. Increased the beampipe radius from 2.8 cm to 5.0 cm
R1=5.02cm
R2=5.27cm
Ecut(e) = 10 MeV
CPU Time: 1.5 hours  6 hours
# e 1/4×
#   0.6×

5. e+, e- Beampipe Z (cm) Z (cm) R=2.8 cm : 1182 × 5100 = 6.0×106/bunch
Direct: 141 × 5100 = 7×105/bunch
R=5.0 cm : × 5100 = 3.1×106/bunch
R=2.8 cm: × 5100 =1.2×107/bunch
R=5.0 cm: × 5100= 7.9×106/bunch

6. Photons Beampipe Z (cm) Z (cm)
R=2.8 cm : 35,568 × 5100 = 1.8×108/bunch
R=5.0 cm : 42,034 × 5100 = 2.1×108/bunch
R=2.8 cm : 130,578 × 5100 = 6.7×108/bunch
R=5.0 cm : 71,225 × 5100 = 3.6×108/bunch

7. Charged Hadrons Beampipe Z (cm) Z (cm) R=2.8 cm : 188×51=9,600/bunch

8. Neutron time vs. energy T > 300 ns comes from E < 5 MeV
Time (ns)
Kinetic Energy (GeV)