鉄製の天井が3つあるジオメトリに地表における宇宙線のエネルギー分布にじゅんじて照射をおこない、どの程度到来頻度が減衰するかを評価します。

Untitled

[ T i t l e ]
estimate thickness of ceiling by muon-flux decay

##################################################################
# Configuration
##################################################################
[ P a r a m e t e r s ]
 icntl    =    0          # (D=0) 3:ECH 5:NOR 6:SRC 7,8:GSH 11:DSH 12:DUMP
 ipnint   =    1          # (D=0) 0: no, 1: consider photo-nuclear reaction
 negs     =    1          # (D=0) =1 EGS photon and electron
 maxcas   =    50         # (D=10) number of particles per one batch
 maxbch   =    10        # (D=10) number of batches
 file(6)  =    phits.out  # (D=phits.out) general output file name

##################################################################
# Radiation Source
##################################################################
[ S o u r c e ]
s-type    = 1         # mono-energetic axial source
proj      = muon+     # kind of incident nucleus       
dir       = 1.0       # z-direction of beam [cosine]
x0        = 0         # (D=0.0) center position of x-axis [cm]
y0        = 0         # (D=0.0) center position of y-axis [cm]
r0        = 3        # radius [cm]
z0        = -10.      # minimum position of z-axis [cm]
z1        = -10.      # maximum position of z-axis [cm]
e-type = 25
icenv=2

##################################################################
# Geometry
##################################################################
[ M a t e r i a l ] # Written in the order of material number, (atom & composition)…    
mat[1]	12C 1.104 1H 1.0 $scinchlator
mat[2]	Fe 1 $fe
mat[10000]	14N  -75.5  16O -23.2   40Ar -1.3  $air
[ S u r f a c e ]  # In the order of surface number, shape, parameterr. Parameters are in units of “cm”       	
1 rpp -2.5 2.5 -2.5 2.5 550.   551.         $scinchlator1
2 rpp -20 20 -20 20 10  50         $3rd floor
3 rpp -20 20 -20 20 100  150         $2nd floor
4 rpp -20 20 -20 20 200  250         $1st floor
10000 sph 0. 0. 0. 5000.

[ C e l l ]  # in order of cell number, material number, density, surface numbers
1	1 -1.104 -1    	$ scintilator1
2	2 -7.85 -2     	$ fe
3	2 -7.85 -3     	$ fe
4	2 -7.85 -4     	$ fe
10000	10000 0.00121  -10000  2 3 4 	$air
10001   -1 10000               	$outer region

[ M a t  N a m e  C o l o r ]
    mat   name      color
     1    scinchlator     pastelcyan
     10000    air    yellow

##################################################################
# Tally
##################################################################
[ T - Deposit ]  
title = Energy Deposit map
mesh =  xyz     # mesh type is xyz scoring mesh
x-type =    2   # x-mesh is linear given by xmin, xmax and nx
xmin =  -10.0   # minimum value of x-mesh points
xmax =   10     # maximum value of x-mesh points
nx =   200      # number of x-mesh points
y-type =    2   # y-mesh is linear given by ymin, ymax and ny
ymin =  -2.0    # minimum value of y-mesh points
ymax =   2.0    # maximum value of y-mesh points
ny =    3       # number of y-mesh points
z-type =    2   # z-mesh is linear given by zmin, zmax and nz
zmin =  -10       # minimum value of z-mesh points
zmax =   290    # maximum value of z-mesh points
nz =   300      # number of z-mesh points
unit =    1
material =  all
output =  dose
axis =    xz    # axis of output
file = energy-deposit-map.out   # file name of output for the above axis
part = all
gshow =    1     # (D=0) generate eps file by ANGEL   
epsout =    1    # 0: no 1:bnd, 2:bnd+mat, 3:bnd+reg 4:bnd+lat

[ T - Deposit ]  
title = Energy Deposit Axis
mesh =  xyz      # mesh type is xyz scoring mesh
x-type =    2    # x-mesh is linear given by xmin, xmax and nx
xmin =  -10.0    # minimum value of x-mesh points
xmax =   10      # maximum value of x-mesh points
nx =   1         # number of x-mesh points
y-type =    2    # y-mesh is linear given by ymin, ymax and ny
ymin =  -10.0    # minimum value of y-mesh points
ymax =   10.0    # maximum value of y-mesh points
ny =    1        # number of y-mesh points
z-type =    2    # z-mesh is linear given by zmin, zmax and nz
zmin =  -10        # minimum value of z-mesh points
zmax =   290     # maximum value of z-mesh points
nz =   300       # number of z-mesh points
unit =    1
material =  all
output =  dose
axis =    z      # axis of output
file = energy-deposit-axis.out   # file name of output for the above axis
part = all muon+ electron photon
gshow =    1     # (D=0) generate eps file by ANGEL   
epsout =    1    # 0: no 1:bnd, 2:bnd+mat, 3:bnd+reg 4:bnd+lat

[ T - T r a c k ] 
title = XY Profile
mesh =  xyz            # mesh type is xyz scoring mesh
x-type =    2            # x-mesh is linear given by xmin, xmax and nx
xmin =  -30      # minimum value of x-mesh points
xmax =   30      # maximum value of x-mesh points
nx =   60            # number of x-mesh points
y-type =    2            # y-mesh is linear given by ymin, ymax and ny
ymin =  -30      # minimum value of y-mesh points
ymax =   30      # maximum value of y-mesh points
ny =    60            # number of y-mesh points
z-type =    2            # z-mesh is linear given by zmin, zmax and nz
zmin =   -10      # minimum value of z-mesh points
zmax =   290      # maximum value of z-mesh points
nz =   300            # number of z-mesh points
2D-type =    3            # 1:Cont, 2:Clust, 3:Color, 4:xyz, 5:mat, 6:Clust+Cont, 7:Col+Cont
axis =   xy            # axis of output
file = xy-profile.out       # file name of output for the above axis
part = muon+
e-type =    1            # e-mesh is given by the below data
ne =    1            # number of e-mesh points
        0.0  1000.0
unit =    1            # unit is [1/cm^2/source]
epsout =    1            # (D=0) generate eps file by ANGEL   
 gshow =    1            # 0: no 1:bnd, 2:bnd+mat, 3:bnd+reg 4:bnd+lat

[ T - T r a c k ]
title = Energy Histogram
mesh =  xyz            # mesh type is xyz scoring mesh
x-type =    2          # x-mesh is linear given by xmin, xmax and nx
xmin =  -2.5           # minimum value of x-mesh points
xmax =   2.5           # maximum value of x-mesh points
nx =   1               # number of x-mesh points
y-type =    2          # y-mesh is linear given by ymin, ymax and ny
ymin =  -2.5           # minimum value of y-mesh points
ymax =   2.5           # maximum value of y-mesh points
ny =    1              # number of y-mesh points
z-type =    2          # z-mesh is linear given by zmin, zmax and nz
zmin =  -10              # minimum value of z-mesh points
zmax =     290         # maximum value of z-mesh points
nz =   300              # number of z-mesh points
2D-type =    3         # 1:Cont, 2:Clust, 3:Color, 4:xyz, 5:mat, 6:Clust+Cont, 7:Col+Cont
axis =   eng           # axis of output
file = energy-histogram.out       # file name of output for the above axis
part = all electron muon+ photon 
e-type =    3          # e-mesh is given by the below data
ne =  100              # number of e-mesh points
emin =  0.001
emax =  5000.0
unit =    3            # unit is [1/cm^2/source]
epsout =    1          # (D=0) generate eps file by ANGEL   
gshow =    0           # 0: no 1:bnd, 2:bnd+mat, 3:bnd+reg 4:bnd+lat

[ T - C r o s s ]
 title = z-distribution of fluence
 mesh = xyz           # mesh type is xyz scoring mesh 
x-type = 2            # x-mesh is linear given by xmin, xmax and nx 
xmin = -10            # minimum value of x-mesh points 
xmax = 10             # maximum value of x-mesh points 
nx = 1                # number of x-mesh points 
y-type = 2            # y-mesh is linear given by ymin, ymax and ny 
ymin = -10            # minimum value of y-mesh points 
ymax = 10             # maximum value of y-mesh points 
ny = 1                # number of y-mesh points 
z-type = 2            # z-mesh is linear given by zmin, zmax and nz 
zmin = -10            # minimum value of z-mesh points 
zmax = 290            # maximum value of z-mesh points
 nz = 300             # number of z-mesh points
 e-type = 1           # e-mesh is given by the below data 
ne = 1                # number of e-mesh points
 0.0 5000.0 
unit = 1              # unit is [1/cm^2/source] 
axis = z              # axis of output 
file = fluence.out           # file name of output for the above axis
 output = current           # surface crossing flux
 part = electron photon muon+
 angel = ymin[1.E-06] ymax[1.E-01] 
epsout = 1            # (D=0) generate eps file by ANGEL
 [ E n d ]


課題

環境放射線由来のベータ線やガンマ線はどの程度の素材・厚みのケースを用いれば防げるかを検討する。

コード