What is the unit of dr 16

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İsmet Acar
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What is the unit of dr 16

Post by İsmet Acar » Wed Jun 09, 2021 11:49 pm

hello I'm using source rate code but I have a problem.

When I use detectors to find comming neutrons to wall it's 2.04571e23 and leaving neutrons are 2.01295e22. If I subtract them it's 1.844415e23 neutrons. But there is a problem first detectors give me value of 1.743025e23 there is a high error like %5. Second there is berylium on wall so when neutrons intreact with it it will gives 2 new neutrons (so when I add that to 3.9138e22) I want to solve that problem. Maybe I'm using detectors wrongly pls help.

my code:

set title "ITER Tokamak"

surf 1 cylz 0.0 0.0 266 -1889.45 1889.45
surf 2 cylz 0.0 0.0 399.5000 -1889.45 1889.45
surf 3 cylz 0.0 0.0 399.7960 -1889.45 1889.45
surf 4 cylz 0.0 0.0 400.5920 -1889.45 1889.45
surf 5 cylz 0.0 0.0 401.2720 -1889.45 1889.45
surf 6 cylz 0.0 0.0 401.7160 -1889.45 1889.45
surf 7 cylz 0.0 0.0 403.5600 -1889.45 1889.45
surf 8 cylz 0.0 0.0 404.2360 -1889.45 1889.45
surf 9 cylz 0.0 0.0 404.7280 -1889.45 1889.45
surf 10 cylz 0.0 0.0 406.3200 -1889.45 1889.45
surf 11 cylz 0.0 0.0 407.0960 -1889.45 1889.45
surf 12 cylz 0.0 0.0 407.4880 -1889.45 1889.45
surf 13 cylz 0.0 0.0 408.8800 -1889.45 1889.45
surf 14 cylz 0.0 0.0 409.7600 -1889.45 1889.45
surf 15 cylz 0.0 0.0 410.5480 -1889.45 1889.45
surf 16 cylz 0.0 0.0 412.5360 -1889.45 1889.45
surf 17 cylz 0.0 0.0 413.2120 -1889.45 1889.45
surf 18 cylz 0.0 0.0 414.0000 -1889.45 1889.45
surf 19 cylz 0.0 0.0 415.6880 -1889.45 1889.45
surf 20 cylz 0.0 0.0 416.4680 -1889.45 1889.45
surf 21 cylz 0.0 0.0 418.1040 -1889.45 1889.45
surf 22 cylz 0.0 0.0 419.0400 -1889.45 1889.45
surf 23 cylz 0.0 0.0 421.0080 -1889.45 1889.45
surf 24 cylz 0.0 0.0 421.9180 -1889.45 1889.45
surf 25 cylz 0.0 0.0 424.3280 -1889.45 1889.45
surf 26 cylz 0.0 0.0 424.8080 -1889.45 1889.45
surf 27 cylz 0.0 0.0 426.5880 -1889.45 1889.45
surf 28 cylz 0.0 0.0 428.0680 -1889.45 1889.45
surf 29 cylz 0.0 0.0 430.7280 -1889.45 1889.45
surf 30 cylz 0.0 0.0 431.9280 -1889.45 1889.45
surf 31 cylz 0.0 0.0 432.6280 -1889.45 1889.45
surf 32 cylz 0.0 0.0 433.4080 -1889.45 1889.45
surf 33 cylz 0.0 0.0 438.5880 -1889.45 1889.45
surf 34 cylz 0.0 0.0 440.2880 -1889.45 1889.45
surf 35 cylz 0.0 0.0 444.2120 -1889.45 1889.45
surf 36 cylz 0.0 0.0 448.9480 -1889.45 1889.45
surf 37 cylz 0.0 0.0 453.3880 -1889.45 1889.45
surf 38 cylz 0.0 0.0 456.0520 -1889.45 1889.45
surf 39 cylz 0.0 0.0 459.3080 -1889.45 1889.45
surf 40 cylz 0.0 0.0 461.9720 -1889.45 1889.45
surf 41 cylz 0.0 0.0 468.1880 -1889.45 1889.45
surf 42 cylz 0.0 0.0 471.4440 -1889.45 1889.45
surf 43 cylz 0.0 0.0 472.9240 -1889.45 1889.45
surf 44 cylz 0.0 0.0 476.1800 -1889.45 1889.45
surf 45 cylz 0.0 0.0 477.6600 -1889.45 1889.45
surf 46 cylz 0.0 0.0 480.9160 -1889.45 1889.45
surf 47 cylz 0.0 0.0 482.3960 -1889.45 1889.45
surf 48 cylz 0.0 0.0 485.6520 -1889.45 1889.45
surf 49 cylz 0.0 0.0 487.1320 -1889.45 1889.45
surf 50 cylz 0.0 0.0 490.3880 -1889.45 1889.45
surf 51 cylz 0.0 0.0 491.8680 -1889.45 1889.45
surf 52 cylz 0.0 0.0 495.1240 -1889.45 1889.45
surf 53 cylz 0.0 0.0 496.6040 -1889.45 1889.45
surf 54 cylz 0.0 0.0 499.8600 -1889.45 1889.45
surf 55 cylz 0.0 0.0 504.0040 -1889.45 1889.45
surf 56 cylz 0.0 0.0 506.6680 -1889.45 1889.45
surf 57 cylz 0.0 0.0 513.1800 -1889.45 1889.45

%Total Absorption cell by cell
det absorption1 dr -2 void dc 3
det absorption2 dr -2 void dc 4
det absorption3 dr -2 void dc 5
det absorption4 dr -2 void dc 6
det absorption5 dr -2 void dc 7
det absorption6 dr -2 void dc 8
det absorption7 dr -2 void dc 9
det absorption8 dr -2 void dc 10
det absorption9 dr -2 void dc 11
det absorption10 dr -2 void dc 12
det absorption11 dr -2 void dc 13
det absorption12 dr -2 void dc 14
det absorption13 dr -2 void dc 15
det absorption14 dr -2 void dc 16
det absorption15 dr -2 void dc 17
det absorption16 dr -2 void dc 18
det absorption17 dr -2 void dc 19
det absorption18 dr -2 void dc 20
det absorption19 dr -2 void dc 21
det absorption20 dr -2 void dc 22
det absorption21 dr -2 void dc 23
det absorption22 dr -2 void dc 24
det absorption23 dr -2 void dc 25
det absorption24 dr -2 void dc 26
det absorption25 dr -2 void dc 27
det absorption26 dr -2 void dc 28
det absorption27 dr -2 void dc 29
det absorption28 dr -2 void dc 30
det absorption29 dr -2 void dc 31
det absorption30 dr -2 void dc 32
det absorption31 dr -2 void dc 33
det absorption32 dr -2 void dc 34
det absorption33 dr -2 void dc 35
det absorption34 dr -2 void dc 36
det absorption35 dr -2 void dc 37
det absorption36 dr -2 void dc 38
det absorption37 dr -2 void dc 39
det absorption38 dr -2 void dc 40
det absorption39 dr -2 void dc 41
det absorption40 dr -2 void dc 42
det absorption41 dr -2 void dc 43
det absorption42 dr -2 void dc 44
det absorption43 dr -2 void dc 45
det absorption44 dr -2 void dc 46
det absorption45 dr -2 void dc 47
det absorption46 dr -2 void dc 48
det absorption47 dr -2 void dc 49
det absorption48 dr -2 void dc 50
det absorption49 dr -2 void dc 51
det absorption50 dr -2 void dc 52
det absorption51 dr -2 void dc 53
det absorption52 dr -2 void dc 54
det absorption53 dr -2 void dc 55

%current of neutrons
det current1 ds 2 1
det current2 ds 3 1
det current3 ds 4 1
det current4 ds 5 1
det current6 ds 6 1
det current7 ds 7 1
det current8 ds 8 1
det current9 ds 9 1
det current10 ds 10 1
det current11 ds 11 1
det current12 ds 12 1
det current13 ds 13 1
det current14 ds 14 1
det current15 ds 15 1
det current16 ds 16 1
det current17 ds 17 1
det current18 ds 18 1
det current19 ds 19 1
det current20 ds 20 1
det current21 ds 21 1
det current22 ds 22 1
det current23 ds 23 1
det current24 ds 24 1
det current25 ds 25 1
det current26 ds 26 1
det current27 ds 27 1
det current28 ds 28 1
det current29 ds 29 1
det current30 ds 30 1
det current31 ds 31 1
det current32 ds 32 1
det current33 ds 33 1
det current34 ds 34 1
det current35 ds 35 1
det current36 ds 36 1
det current37 ds 37 1
det current38 ds 38 1
det current39 ds 39 1
det current40 ds 40 1
det current41 ds 41 1
det current42 ds 42 1
det current43 ds 43 1
det current44 ds 44 1
det current45 ds 45 1
det current46 ds 46 1
det current47 ds 47 1
det current48 ds 48 1
det current49 ds 49 1
det current50 ds 50 1
det current51 ds 51 1
det current52 ds 52 1
det current53 ds 53 1
det current54 ds 54 1
det current55 ds 55 1
det current56 ds 56 1
det current57 ds 57 1

%Berilyum Neutron Production
det Neutron1 n dr 16 berilium dc 3
det Neutron2 n dr 16 berilium dc 6
det Neutron3 n dr 16 berilium dc 9
det Neutron4 n dr 16 berilium dc 12
det Neutron5 n dr 16 berilium dc 15
det Neutron6 n dr 16 berilium dc 18
det Neutron7 n dr 16 berilium dc 21
det Neutron8 n dr 16 berilium dc 24
det Neutron9 n dr 16 berilium dc 27
det Neutron10 n dr 16 berilium dc 30
det Neutron11 n dr 16 berilium dc 33
det Neutron12 n dr 16 berilium dc 36



mat plasma 2.054855134E-9 rgb 155 158 255
1002.09c 1
1003.09c 1

mat water -0.9779107 tmp 343 rgb 36 122 233
1001.03c 2
8016.03c 1

mat stell -7.99 tmp 973 rgb 149 149 149
6000.09c -0.00030
7014.09c -0.00100
14000.09c -0.00750
15031.09c -0.00045
16000.09c -0.00030
24000.09c -0.18000
25055.09c -0.02000
26000.09c -0.62045
28000.09c -0.14000
42000.09c -0.03000

mat berilium -1.85 tmp 673 rgb 101 145 130
4009.06c 1


mat Lithium -2.01 tmp 973 rgb 255 255 255
3006.09c 0.2237
3007.09c 0.2237
8016.09c 0.5526



mat L1 6.14933261E-03 tmp 973
3006.09c 1

mat L2 7.48694285E-02 tmp 973
3007.09c 1

mat helium 2.054855134E-09 rgb 230 0 255
2004.06c 1



set srcrate 1.41651116e23
src 1 n sc 1 se 14.1
set nps 1000000 20


cell 1 0 void -1
cell 2 0 void 1 -2
cell 3 0 berilium 2 -3
cell 4 0 water 3 -4
cell 5 0 Lithium 4 -5
cell 6 0 berilium 5 -6
cell 7 0 water 6 -7
cell 8 0 Lithium 7 -8
cell 9 0 berilium 8 -9
cell 10 0 water 9 -10
cell 11 0 Lithium 10 -11
cell 12 0 berilium 11 -12
cell 13 0 water 12 -13
cell 14 0 Lithium 13 -14
cell 15 0 berilium 14 -15
cell 16 0 water 15 -16
cell 17 0 Lithium 16 -17
cell 18 0 berilium 17 -18
cell 19 0 water 18 -19
cell 20 0 Lithium 19 -20
cell 21 0 berilium 20 -21
cell 22 0 water 21 -22
cell 23 0 Lithium 22 -23
cell 24 0 berilium 23 -24
cell 25 0 water 24 -25
cell 26 0 Lithium 25 -26
cell 27 0 berilium 26 -27
cell 28 0 water 27 -28
cell 29 0 Lithium 28 -29
cell 30 0 berilium 29 -30
cell 31 0 water 30 -31
cell 32 0 Lithium 31 -32
cell 33 0 berilium 32 -33
cell 34 0 water 33 -34
cell 35 0 Lithium 34 -35
cell 36 0 berilium 35 -36
cell 37 0 stell 36 -37
cell 38 0 water 37 -38
cell 39 0 stell 38 -39
cell 40 0 water 39 -40
cell 41 0 stell 40 -41
cell 42 0 water 41 -42
cell 43 0 stell 42 -43
cell 44 0 water 43 -44
cell 45 0 stell 44 -45
cell 46 0 water 45 -46
cell 47 0 stell 46 -47
cell 48 0 water 47 -48
cell 49 0 stell 48 -49
cell 50 0 water 49 -50
cell 51 0 stell 50 -51
cell 52 0 water 51 -52
cell 53 0 stell 52 -53
cell 54 0 water 53 -54
cell 55 0 stell 54 -55
cell 56 0 water 55 -56
cell 57 0 stell 56 -57
cell 58 0 outside 57

ene 1 4 nj21
ene 2 2 500 0 15




%plot 1 10000 10000
%plot 3 10000 10000


set acelib "/codes/data/serpent/endfb7/sss_endfb7u.xsdata" "/codes/data/serpent/endfb7/photon.xsdata"
set declib "/codes/data/serpent/endfb7/sss_endfb7.dec"
set nfylib "/codes/data/serpent/endfb7/sss_endfb7.nfy"
set pdatadir "/codes/data/serpent/endfb7/photon_data/"


set bc 1 1 1

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Jaakko Leppänen
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Re: What is the unit of dr 16

Post by Jaakko Leppänen » Thu Jun 10, 2021 8:40 am

Positive reaction MT's refer to microscopic reaction rates. So with dr 16 the flux is multiplied by the microscopic (n,2n) cross section and integrated over space and energy.

For more information, see: https://serpent.vtt.fi/mediawiki/index. ... on_numbers
- Jaakko

Ana Jambrina
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Re: What is the unit of dr 16

Post by Ana Jambrina » Thu Jun 10, 2021 12:20 pm

Reaction mt = -2 includes all capture modes.
If you are looking at tritium production, Be-9 (n,t) and Li-6 (n,t)/Li-7(n,n+t), you might want to take a look at mt = 105 (z,t) and mt =205 (z,Xt) reactions.
- Ana

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