THE EGS5 CODE SYSTEM

More documents

Recommendations

Info

111213141516yesmedium.ne.medoldnoiausfl(iarg+1)ne0noyescallausgab(iarg)yes medium .eq. 0.or.dpmfp .gt. EPSGMFPircode = 2np = np - 1noiraylr(irl).eq.1noyescallrandomset (rnnow)rnnow.le.(1.0 - cohfac)no"Rayleigh scattering"yesiarg=23iausfl(iarg+1)yescallausgab(iarg)"NEW-ENERGY loop""NEW-MEDIUM loop"none0calllayleiiarg=24iausfl(iarg+1)neyescallausgab(iarg)0nocallrandomset (rnnow)gbr1 = gbr11(lgle+iextp,medium)*gle +gbr10(lgle+iextp,medium)nornnow.le.gbr1.and.e(np).gt.RMT2yesiarg=15"Pair production"17 1819 20 21282
1718192021iausfl(iarg+1)ne0nocallpairyescallausgab(iarg)iarg=16iausfl(iarg+1)ne0noyescallausgab(iarg)gbr2 = gbr21(lgle+iextp,medium)*gle +gbr20(lgle+iextp,medium)"NEW-ENERGY loop"noyesrnnow.lt.gbr2iarg=17"Compton scattering"iausfl(iarg+1)ne0nocallcomptyescallausgab(iarg)iq(np).eq.0.and.e(np-1).lt.ecut(ir(np-1))yesiq(np) = iq(np-1)iq(np-1) = 0t = e(np); e(np) = e(np-1)e(np-1) = t;t = u(np);u(np) = u(np-1)u(np-1) = tt = v(np);v(np) = v(np-1)v(np-1) = tt = w(np);w(np) = w(np-1)w(np-1) = tt = uf(np);uf(np) = uf(np-1)uf(np-1) = tt = vf(np);vf(np) = vf(np-1)vf(np-1) = tt = wf(np);wf(np) = wf(np-1)wf(np-1) = tnoiarg=1822 23 24 25 26283
Page 1 and 2:
THE EGS5 CODE SYSTEM 1Hideo Hirayam
Page 6 and 7:
4.1 UCCYL - Cylinder-Slab Geometry
Page 8 and 9:
E CONTENTS OF THE EGS5 DISTRIBUTION
Page 10 and 11:
2.17 Convergence of energy depositi
Page 12 and 13:
List of Tables2.1 Symbols used in E
Page 14 and 15:
C.2 Goudsmit-Saunderson-related sub
Page 16:
With the release of the EGS4 versio
Page 19 and 20:
“shower book”.For various reaso
Page 21 and 22:
1.2.2 EGS1About this time Nelson be
Page 23 and 24:
MSCAT.These versions of EGS, PEGS,
Page 25 and 26:
ten for energies less than 100 MeV
Page 27 and 28:
- Molière multiple scattering (i.e
Page 29 and 30:
EGS5. The primary advantages of thi
Page 31 and 32:
ICRU37-compliant using the NIST dat
Page 33 and 34:
high Z materials. Del Guerra et al.
Page 35 and 36:
One of these six cross sections is
Page 37 and 38:
at low energies. The latter, couple
Page 39 and 40:
If E 1 and E 2 are expressions invo
Page 41 and 42:
The result of this algorithm is tha
Page 43 and 44:
2.4 Particle Transport SimulationTh
Page 45 and 46:
from appropriate distribution funct
Page 47 and 48:
parameters which may be needed. The
Page 49 and 50:
arrived at their values in a very m
Page 51 and 52:
Math FORTRAN ProgramTable 2.1 (cont
Page 53 and 54:
Figure 2.2: Feynman diagrams for br
Page 55 and 56:
defined byδ ij = 1 if i = j,0 othe
Page 57 and 58:
Davies, Bethe and Maximon[49] (e.g.
Page 59 and 60:
cross section given in Equation 2.4
Page 61 and 62:
and use this as the variable to be
Page 63 and 64:
we haveNow defineδ ′ = ∆ C ∆
Page 65 and 66:
This agrees with formula (10) of Bu
Page 67 and 68:
That is, using Equations 2.122 and
Page 69 and 70:
d˘Σ P air, Run−timedE=[23 − 1
Page 71 and 72:
Angular distribution formulasThe fo
Page 73 and 74:
at either x = 0, x = (πE 0 ) 2 (i.
Page 75 and 76:
The following table, derived from t
Page 77 and 78:
Figure 2.3: Feynman diagrams for tw
Page 79 and 80:
whereX 0 = radiation length (cm),n
Page 81 and 82:
whereα ′ 1 =α ′ 2 =k 0′k 0
Page 83 and 84:
+ 1 E 2′ − 1 E 1′− C 2 ln E
Page 85 and 86:
PEGS functions BHABDM, BHABRM, and
Page 87 and 88:
To find the limits of E, we first c
Page 89 and 90:
Figure 2.5: Feynman diagram for sin
Page 91 and 92:
Ī adj = average adjusted mean ioni
Page 93 and 94:
Table 2.2 (cont.)Z Symbol Atomic De
Page 95 and 96:
Table 2.3 (cont.)LABEL a m s x 0 x
Page 97 and 98:
(c) If 10.5 ≤ −C < 11.0 then x
Page 99 and 100:
obtain the real scattering angle. E
Page 101 and 102:
ρ = material mass density (g/cm 3
Page 103 and 104:
Hence,so thatln [1.13 + 3.76(αZ i
Page 105 and 106:
g 3 (θ) =θ4 ()λf (0) (θ) + f (1
Page 107 and 108:
Actually, b = 0 does not correspond
Page 109 and 110:
Assume that an electron starts off
Page 111 and 112:
At small path lengths t, a very lar
Page 113 and 114:
xFinalDirectionφΘ∆xtInitialDire
Page 115 and 116:
shown that this version of the rand
Page 117 and 118:
and as we noted earlier, they are d
Page 119 and 120:
FinalDirectionxEnergy HingesφΘt(
Page 121 and 122:
Transport Steps,∆ E = E x ESTEPEt
Page 123 and 124:
tranport step 1DEINITIAL1 DERESID1t
Page 125 and 126:
= ∆E( ∣ ∣∣∣ dE−1 ∣ )
Page 127 and 128:
Since the CSDA range is uniquely de
Page 129 and 130:
short steps accurate, but slowstep
Page 131 and 132:
Table 2.4: Materials used in refere
Page 133 and 134:
Average Lateral Displacement (cm)0.
Page 135 and 136:
100 MeV Electrons0.010.001LiCLWAlST
Page 137 and 138:
actions involving photons with ener
Page 139 and 140:
Cu 40 keVCounts (/keV/sr/source)10
Page 141 and 142:
Table 2.6: Data sources for general
Page 143 and 144:
2.16.2 Photoelectron Angular Distri
Page 145 and 146:
where r 0 is the classical electron
Page 147 and 148:
second term on the right-hand side
Page 149 and 150:
ZθkYOφe0Xk0Figure 2.23: Photon sc
Page 151 and 152:
Note the similarities and differenc
Page 153 and 154:
XZωk0Oe0YFigure 2.25: Direction of
Page 155 and 156:
W = Atomic, molecular and mixture w
Page 157 and 158:
In order to use EGS5 to answer the
Page 159 and 160:
write(6,100)100 FORMAT(’ PEGS5-ca
Page 161 and 162:
! plate is 1 mm thick!-------------
Page 163 and 164:
implicit noneinclude ’include/egs
Page 165 and 166:
0.989 MeV kinetic energyBrem photon
Page 167 and 168:
! locally (in fact EDEP = particles
Page 169 and 170:
inmax=max(binmax,ebin(j))end dowrit
Page 171 and 172:
0.40 0.0058 *0.60 0.0054 *0.80 0.00
Page 173 and 174:
!----------------------------------
Page 175 and 176:
endifif(loop.lt.3) thenwrite(6,120)
Page 177 and 178:
180 FORMAT(/’ Knock-on electrons
Page 179 and 180:
common/score/escore(3), iscore(3)re
Page 181 and 182:
Brem photons can be created and any
Page 183 and 184:
in any combination of 31 well speci
Page 185 and 186:
end doend do! nmed and dunit defaul
Page 187 and 188:
! ------------------------------clo
Page 189 and 190:
if (iarg.eq.17) then! A Compton sca
Page 191 and 192:
! the general purpose geometry subr
Page 193 and 194:
eturnend!--------------------------
Page 195 and 196:
open(UNIT= 6,FILE=’egs5job.out’
Page 197 and 198:
write(6,130)130 format(/’ Start t
Page 199 and 200:
icol=* int(dlog10(ebin(j)*10000.0/f
Page 201 and 202:
0.0300 0.0000*0.0320 0.0001*0.0340
Page 203 and 204:
0.0780 0.0014 *0.0800 0.0012 *0.082
Page 205 and 206:
The main purpose of this section, h
Page 207 and 208:
4.1.3 Leading Particle BiasingThe s
Page 209 and 210:
• Sum the weighted energy deposit
Page 211 and 212:
4z6Vac115Pb65Air749 1012AirAir8Vac
Page 213 and 214:
Figure 4.3: UCBEND simulation at 3.
Page 215 and 216:
necessary geometry input. The follo
Page 217 and 218:
Appendix AEGS5 FLOW DIAGRAMSHideo H
Page 219 and 220:
subroutineannihVersion051219-1435ia
Page 221 and 222:
¡eq1anormr = 1./sqrt(anorm2)sineta
Page 223 and 224:
1br = max(br,0.D0)ekse2 = br*ekines
Page 225 and 226:
12 3br = br*pesg = eie*bryesesg.lt.
Page 227 and 228:
¤ne¤nesubroutinecollis(lelec,irl,
Page 229 and 230:
¦ne¦necallausgab(iarg)6iq(np).eq.
Page 231 and 232:
subroutinecomptVersion051219-1435ic
Page 233 and 234:
3456icprof(medium).eq.3noyescallran
Page 235 and 236:
subroutinecounters_outVersion051227
Page 237 and 238:
1234567noii.ne.jjyesnoledgb(ii,medi
Page 239 and 240:
©ne1 2 3neispl = (2*neispl + 1)/3f
Page 241 and 242:
subroutineelectr(ircode)ielectr = i
Page 243 and 244:
7 8 9 10 11 12 13detot = e(np)-ecut
Page 245 and 246:
2324 25 26 27 282930ustep.gt.dnear(
Page 247 and 248: 4142 43 44 45 4647 48 49ecut(irnew)
Page 249 and 250: 5859 60 61 6263 64tmscat.eq.0.0noye
Page 251 and 252: 73 7475 76noedep.lt.e(np)yescallran
Page 253 and 254: subroutinehardx(charge,kEnergy,keIn
Page 255 and 256: 1 2 3 4 5iz = izziz.eq.0noxsi = zer
Page 257 and 258: 13 14 15 16 17sint.ne.0.yesrdev = m
Page 259 and 260: 19im=1im=im+1im >nmednoyesnoiprofm(
Page 261 and 262: 2223write(kmpo,1610)read(kmpi,1260)
Page 263 and 264: 26 27 28iprofm(im).ne.1noyeswrite(6
Page 265 and 266: 30 31 32 33 34esig0(i,im) = esig0(i
Page 267 and 268: 36 37 38noiedgfl(ii).ne.0.or.iauger
Page 269 and 270: nokaug.eq.6calllshell(3)kaug.eq.7ka
Page 271 and 272: subroutinekxrayVersion051219-1435ik
Page 273 and 274: 123dfl3aug(5,iz).eq.0.nonauger = na
Page 275 and 276: 12 3 4rnnow.le.omegal2(iz) + f23(iz
Page 277 and 278: 1 2dflx3(6,iz).eq.0.nonxray=nxray+1
Page 279 and 280: 1impacr(ir(np)).eq.1.and.iedgfl(ir(
Page 281 and 282: 12fject = (ktot - k1grd(iprt,ik1))
Page 283 and 284: 56789thr = 1./eta"Central correctio
Page 285 and 286: 1 2 3delta = delcm(medium)*del"Reje
Page 287 and 288: 89101112galpha.ge.0.0yesnoximid = 0
Page 289 and 290: subroutinephotoVersion051219-1435"C
Page 291 and 292: 4 5 6 7 8rnnow.le.pbran(i)noyesiz =
Page 293 and 294: 121314beta = sqrt((eelec - RM)*(eel
Page 295 and 296: subroutinephotonVersion051219-1435i
Page 297: 678910idisc.gt.0yesnoedep = 0.iarg
Page 301 and 302: 2728iausfl(iarg+1)ne0noircode = 2np
Page 303 and 304: subroutinerk1Version060313-0945open
Page 305 and 306: 4 5 6j=1j=j+1j>neke-1noyesj.eq.1noj
Page 307 and 308: 18 19 20 21 22 23elkeold = elkek1ol
Page 309 and 310: 1 2"end of file; go to 13"read(17,*
Page 311 and 312: 4 5"go to 30"noabs(k1mine-k1grd(1,1
Page 313 and 314: 7 8read(17,'(72a1)') bufferread(17,
Page 315 and 316: subroutine shower(iqi,ei,xi,yi,zi,u
Page 317 and 318: subroutineuphi(ientry,lvl)Version05
Page 319 and 320: subroutinerandomset(rndum)Version05
Page 321 and 322: subroutinerluxinitVersion051219-143
Page 323 and 324: 1i=1i=i+1i>24noyesseeds(i) = real(i
Page 325 and 326: subroutinerluxinVersion051219-1435w
Page 327 and 328: Appendix BEGS5 USER MANUALHideo Hir
Page 329 and 330: Table B.1: Variable descriptions fo
Page 337 and 338: Table B.12: Variable descriptions f
Page 339 and 340: Optional parameter modificationsThe
Page 341 and 342: the call to PEGS5 may be skipped if
Page 343 and 344: egions. Execution of EGS5 is termin
Page 345 and 346: of the transport in the walls of el
Page 347 and 348: call rluxinitafter specifying LUXLE
Page 349 and 350:
END OF FILE ON UNIT 12PROGRAM STOPP
Page 351 and 352:
do i=1,ncasesuf(1)=ufivf(1)=vfiwf(1
Page 353 and 354:
crossed, then USTEP should be set t
Page 355 and 356:
subroutine howfarimplicit noneinclu
Page 357 and 358:
Table B.18: IARG values program sta
Page 359 and 360:
As an example of how to write an AU
Page 361 and 362:
!**********************************
Page 363 and 364:
nreg=3do i=2,nregecut(i)=100.0pcut(
Page 365 and 366:
nlines=0nwrite=15!-----------------
Page 367 and 368:
if (nlines.lt.nwrite) thenwrite(6,1
Page 369 and 370:
Appendix CPEGS USER MANUALHideo Hir
Page 371 and 372:
is entered. On each pass through th
Page 373 and 374:
(from previous figure)(to previous
Page 375 and 376:
(from previous figure)||+ ---------
Page 377 and 378:
+------+|BREMTR|+------+|V+------+|
Page 379 and 380:
+------+|PAIRTR|+------+|V+------+|
Page 381 and 382:
NameDCSLOADDCSSTORDCSTABELASTINOELI
Page 383 and 384:
NameAFFACTAINTPALKEALKEIALINALINIAD
Page 385 and 386:
Table C.5: Functions in PEGS, part
Page 387 and 388:
+------+ +------+ +------+ +------+
Page 389 and 390:
Table C.8: ELEM option input data l
Page 391 and 392:
Table C.10: MIXT option input data
Page 393 and 394:
Table C.12: PWLF option input data
Page 395 and 396:
Table C.17: PLTN option input data
Page 397 and 398:
ICPROF is set to 3, the user must c
Page 399 and 400:
ColumnLine 123456789112345678921234
Page 401 and 402:
interiors of the intervals. If FEXA
Page 403 and 404:
C.3.6The TEST OptionThe TEST option
Page 405 and 406:
C.3.9The HPLT OptionThe Histogram P
Page 407 and 408:
Appendix DEGS5 INSTALLATION GUIDEHi
Page 409 and 410:
egs5 directory (preferably using th
Page 411 and 412:
6. The user is then asked to key-in
Page 413 and 414:
* User code tutor1.f has been compi
Page 415 and 416:
Appendix ECONTENTS OF THE EGS5DISTR
Page 417 and 418:
All of the actual FORTRAN source co
Page 419 and 420:
aprime.data Data for empirical brem
Page 421 and 422:
ismuth krypton silverboron lanthanu
Page 423 and 424:
The tutorial problems and advanced
Page 425 and 426:
Bibliography[1] R. G. Alsmiller Jr.
Page 427 and 428:
[28] A. F. Bielajew. HOWFAR and HOW
Page 429 and 430:
[59] K. Flöttmann. Investigations
Page 431 and 432:
[92] H. Kolbenstvedt. Simple theory
Page 433 and 434:
[123] Y. Namito, H. Hirayama, A. Ta
Page 435 and 436:
[156] Y. A. Shreider, editor. The M
Page 437 and 438:
Index“shower book”, 37AE, 28, 3
Page 439 and 440:
Klein-Nishina formula, 62Landau dis
show all

THE EGS5 CODE SYSTEM

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?