The effect on the high energy neutron rate in the inner region 
of the Large wheel is summarized below:
(ZLO,ZHI,RLO,RHI:   1320.  1400.  180.  280.)


                          Poly  Poly   Poly       JF              Rate          Rate        Rate
Simulation option  R(JF)  JTT  Toroid   JF      shape Flange    n>100keV      Hadrons      photons    
=================  =====  ==== ======  ====     ===== ======    ========      =======      ========

TP43                ???    0/0  0 cm   ??? +Pb   cone   no     730 Hz 0.39   226 Hz 0.54   11600 Hz 0.97
Jun01 JTCu+Blks     165   blks  0 cm  10 cm+Pb   cone   no    1510 Hz 0.81   303 Hz 0.72   12000 Hz 1.01
July baseline       165    7-4  0 cm  10 cm+Pb   cone   no    1870 Hz 1.00   420 Hz 1.00   11900 Hz 1.00
Aug baseline        165    7/0  4 cm  10 cm+Pb   cone   no    1010 Hz 0.54   340 Hz 0.81   12200 Hz 1.03
Aug JDJD conical    165    7/0  4 cm  10 cm+Pb   cone   no    1030 Hz 0.55   324 Hz 0.77   12700 Hz 1.07
Aug smaller JF      165    7/0  4 cm  10 cm+Pb   cyl    no    1060 Hz 0.57   367 Hz 0.87   12300 Hz 1.03
Sep JDJF con R1575  157.5  7/0  4 cm  10 cm+Pb   cone   no    1100 Hz 0.59   389 Hz 0.93   12700 Hz 1.07
Sep JDJF conical    150    7/0  4 cm  10 cm+Pb   cone   no    1280 Hz 0.68   455 Hz 1.08   13000 Hz 1.09
Sep smaller JF      150    7/0  4 cm  10 cm+Pb   cyl    no    1330 Hz 0.71   417 Hz 0.99   12500 Hz 1.05
Sep JTBack SmallJF  150    7/2  4 cm  10 cm+Pb   cyl    no    1360 Hz 0.73   499 Hz 1.19   12000 Hz 1.01     
Oct JT 2cm          150    2/2  4 cm  10 cm+Pb   cyl    no    1320 Hz 0.71   491 Hz 1.17   12100 Hz 1.02
Sep JT 4cm SmallJF  150    4/4  4 cm  10 cm+Pb   cyl    no    1400 Hz 0.75   526 Hz 1.25   11500 Hz 0.97 
Oct baseline        150    4/4  4 cm  10 cm+Pb   cyl    no    1290 Hz 0.69   523 Hz 1.25   11700 Hz 0.98
Nov baseline        150    4/4  4 cm  10 cm+Pb   cyl   yes    1400 Hz 0.75   537 Hz 1.28   11600 Hz 0.97
Nov Clad Pb>Fe      150    4/4  4 cm  10 cm+Fe   cyl   yes    1250 Hz 0.67   534 Hz 1.27   12300 Hz 1.03
Nov clad 8cm        150    4/4  8 cm  10 cm+Pb   cyl   yes    1190 Hz 0.64   493 Hz 1.17   11200 Hz 0.94
Nov JF r=155        155    4/4  4 cm  10 cm+Pb   cyl   yes    1290 Hz 0.69   488 Hz 1.16   11400 Hz 0.96
Nov R=155 P5cm      155    4/4  4 cm   5 cm+Pb   cyl   yes    1320 Hz 0.71   456 Hz 1.09   11400 Hz 0.96
Dec baseline        155    4/4  8 cm   5 cm+Fe   cyl   yes     951 Hz 0.51   411 Hz 0.98   11700 Hz 0.98
Feb baseline STAGE1 155    4/4  8 cm   5 cm+Fe   cyl   yes     965 Hz 0.52   414 Hz 0.96   11800 Hz 0.99
Feb O2Fe     STAGE2 155    4/4  8 cm   5 cm+Fe   cyl   yes     960 Hz 0.51   422 Hz 1.00   11900 Hz 1.00
Feb JFCladPLiF      155    4/4  8 cm   5 cm(Li)  cyl   yes    1020 Hz 0.55   491 Hz 1.17   12500 Hz 1.05

where

R(JF)       = The radius at the front part of the JF
Poly JTT    = The thickness of poly at the front/back part of the JTT 
Poly Toroid = The thickness of poly on the back wall of the toroid
Poly JF     = The thickness of poly at the front part of the JF
JF shape    = Cone means conical shape, Cyl means cylindrical shape
Flange      = Beampipe flange added at z=13m