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cdf_z.f
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cdf_z.f
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C
C ***************************************************************************
C CDF_Z
C
C A program to generate the CDF of the photons for SHADOW by
C calculating the flux and the degree of polarization at given
C polar angles (theta,phi) and energy.
C
C Modified version of URGENT made by F. Zontone.
C
C Usage: to call in the SHADOW module "MAKE_ID", option 'undulator',
C as user's program.
C
C INPUT: i) the input file UNDUL_Z.PAR with the undulator
C parameters;
C OUTPUT: i) the file for SHADOW UPHOT.DAT used for generating
C the CDF of the undulator radiation
C
C ***************************************************************************
C
SUBROUTINE CDF_Z
IMPLICIT DOUBLE PRECISION (A-H,K,L,O-Z)
REAL*8 ENER,THETA_S,PHI_S,RNO,POL_DEG
DIMENSION ENER(51),THETA_S(31,51),PHI_S(31,31,51)
DIMENSION RNO(31,31,51),POL_DEG(31,31,51)
INTEGER CODE
COMMON/INPUT/GAMMA,K3,KX,KY,LAMDAR,LEN,N
COMMON/ANGLE/CODE(400),SINPHI(400),COSPHI(400),DPHI,NPHI1,NPHI2,
$ NALPHA,DALPHA,ISG(400)
COMMON/CONST/F3,APMIN,APMAX,MODE,ICALC,IHARM,IANG
COMMON/SCREEN/D,XPMIN,DXP,NXP,YPMIN,DYP,NYP,FAC
COMMON/SCALE/E_MIN,DE
COMMON/CONVL/H(5001),WMIN,DW,NW
COMMON/CALC/BRI1(101,101),BRI2(101,101),BRI3(101,101),
$ BRI0(101,101),RAD1(51,51),RAD2(51,51),RAD3(51,51),
$ RAD0(51,51),I1(5001),I2(5001),L1,L2,L3,L4,
$ SPEC1(5001),SPEC2(5001),SPEC3(5001),SPEC0(5001),WK(5001)
DATA PI/3.141592653589/,IDEBUG/0/
C
C READ UNDULATOR PARAMETERS FROM A INPUT FILE
C
C
C srio gets input from shadow namelists
C
call GetFromNml(PERIOD,KX,KY,N,ENERGY,CUR,NPHI,DALPHA)
C OPEN(21,FILE='UNDUL_Z.PAR',STATUS='OLD')
C READ(21,*) PERIOD,KX,KY,N,ENERGY,CUR,NPHI,DALPHA
C CLOSE (21)
C
C READ THE ANGLES FROM THE SHADOW BINARY FILE
C
OPEN (10,FILE='uphot.dat',STATUS='UNKNOWN',FORM='UNFORMATTED')
READ (10) NE_S,NT_S,NP_S
DO 15 M=1,NE_S
READ (10) ENER(M)
15 CONTINUE
DO 25 M=1,NE_S
DO 35 J=1,NT_S
READ (10) THETA_S(J,M)
35 CONTINUE
25 CONTINUE
DO 45 M=1,NE_S
DO 55 J=1,NT_S
DO 65 I=1,NP_S
READ (10) PHI_S(I,J,M)
65 CONTINUE
55 CONTINUE
45 CONTINUE
C
C CONSTANTS
C
GAMMA=ENERGY/0.000511
LAMDAR=PERIOD*1.0D+10/(2.0*GAMMA*GAMMA)
K2=KX*KX+KY*KY
K3=1.0+K2/2.0
LEN=N*PERIOD
LAMDA1=LAMDAR*K3
E1=12398.5/LAMDA1
PTOT=0.0725*N*K2*ENERGY*ENERGY*CUR/PERIOD
GK=0.0
IF(KX.LT.1E-3.OR.KY.LT.1E-3)THEN
IF(KX.LT.1E-3)K=KY
IF(KY.LT.1E-3)K=KX
GK=K*((K**6)+(24.*(K**4)/7.)+(4.*K*K)+(16./7.))
$ /((1.+(K*K))**3.5)
ENDIF
IF(ABS(KX-KY).LT.1E-3)THEN
K=KX
GK=32.0/7.0*K/(1.0+K*K)**3.0
ENDIF
PD=0.1161*(ENERGY**4)*N*K*GK*CUR/PERIOD
C
C DEFAULT CALCULATION
C
MODE=2
ICALC=3
IHARM=-1
D=0.0
XPS=0.0
YPS=0.0
NXP=0
NYP=0
IF(NPHI.EQ.0)NPHI=20
IF(NSIG.EQ.0)NSIG=3
IF(NALPHA.EQ.0)NALPHA=15
IF(DALPHA.EQ.0.0)DALPHA=2.0
nomega=0
write (*,*) '<><> NOMEGA: ',nomega
IF(NOMEGA.EQ.0)NOMEGA=16
write (*,*) '<><> NOMEGA: ',nomega
IF(DOMEGA.EQ.0.0)DOMEGA=2.0
C
C ENERGY SCALE
C
write (*,*) '<><> NOMEGA: ',nomega
DE=2.0*DOMEGA*E1/(NOMEGA*N)
write (*,*) '<><> NOMEGA: ',nomega
C
C ANGULAR (IANG=1) UNITS
C
IANG=1
D=1.0
C
C ERROR CHECK
C
write (*,*) '<><> NOMEGA: ',nomega
write (*,*) "NXP,NYP,NPHI,NALPHA,NOMEGA: ",NXP,NYP,NPHI,
$NALPHA,NOMEGA
IF(NXP.LT.0.OR.NXP.GT.50.OR.NYP.LT.0.OR.NYP.GT.50)GOTO 900
IF(NPHI.GT.100.OR.NALPHA.GT.100)GOTO 900
IF(NOMEGA.GT.5000)GOTO 900
C
C START CALCULATIONS
C
WRITE(6,500)
DO M=1,NE_S
write(*,*) 'N of iteration in energy: ',M
DO J=1,NT_S
DO I=1,NP_S
E_MIN=DBLE(ENER(M))
TH_ANG=DBLE(THETA_S(J,M))
PH_ANG=DBLE(PHI_S(I,J,M))
XPC=TH_ANG*DCOS(PH_ANG)*1D+03
YPC=TH_ANG*DSIN(PH_ANG)*1D+03
C
C PINHOLE : DETERMINE MIN. AND MAX. EMISSION ANGLES WITHIN PINHOLE
C
XE=XPC*1.0D-03/D
YE=YPC*1.0D-03/D
APMAX=GAMMA*GAMMA*((XE*XE)+(YE*YE))
APMIN=GAMMA*GAMMA*((XE*XE)+(YE*YE))
IF(XPC.EQ.0.0.AND.YPC.EQ.0.0)THEN
FAC=4.0
XPMIN=0.0
YPMIN=0.0
ELSE
FAC=1.0
XPMIN=XPC
YPMIN=YPC
ENDIF
NXP=1
NYP=1
C
C SET UP ARRAY OF COSPHI AND SINPHI
C
NPHI1=(4*NPHI)
NPHI2=NPHI+1
INC=NPHI
ISIGN=1
DPHI=2.0*PI/FLOAT(NPHI1)
DO 10 IE=1,NPHI1
IF(IE.EQ.1)CODE(IE)=1
IF(IE.NE.1)CODE(IE)=CODE(IE-1)+ISIGN
IF(IE.EQ.(INC+1))ISIGN=-1
IF(IE.EQ.((2*INC)+1))ISIGN=1
IF(IE.EQ.((3*INC)+1))ISIGN=-1
ISG(IE)=ISIGN
PHI=(IE-1)*DPHI
SINPHI(IE)=DSIN(PHI)
COSPHI(IE)=DCOS(PHI)
10 CONTINUE
C
C FACTOR TO SCALE FINAL RESULTS
C
F3=4.55D+07*N*N*GAMMA*GAMMA*CUR/(D*D)
C
C CALL ANALYSIS PROGRAM
C
CALL SUB4
RAD0(1,1)=RAD0(1,1)*(1000/E_MIN)*1D06
RNO(I,J,M)=REAL(RAD0(1,1))
IF(RNO(I,J,M).LT.10.0) RNO(I,J,M)=1.0
L1_S=REAL(L1)
POL_DEG(I,J,M)=(1+L1_S)/2
END DO
END DO
END DO
DO 46 M=1,NE_S
DO 56 J=1,NT_S
DO 66 I=1,NP_S
WRITE (10) RNO(I,J,M)
66 CONTINUE
56 CONTINUE
46 CONTINUE
DO 47 M=1,NE_S
DO 57 J=1,NT_S
DO 67 I=1,NP_S
WRITE (10) POL_DEG(I,J,M)
67 CONTINUE
57 CONTINUE
47 CONTINUE
CLOSE (10)
write(*,*) 'Calculations has been successfully
$completed (...maybe...) !!!'
RETURN
!STOP
900 WRITE(6,9000)
500 FORMAT(' ****** CDF_Z - VERSION 1.2 - 29/6/94 ******')
9000 FORMAT(//' *** INVALID INPUT PARAMETERS ***')
END
C
C ---------------
SUBROUTINE SUB4
C ---------------
IMPLICIT DOUBLE PRECISION (A-H,K,L,O-Z)
INTEGER CODE
COMMON/INPUT/GAMMA,K3,KX,KY,LAMDAR,LEN,N
COMMON/ANGLE/CODE(400),SINPHI(400),COSPHI(400),DPHI,NPHI1,NPHI2,
$ NALPHA,DALPHA,ISG(400)
COMMON/CONST/F3,APMIN,APMAX,MODE,ICALC,IHARM,IANG
COMMON/SCREEN/D,XPMIN,DXP,NXP,YPMIN,DYP,NYP,FAC
COMMON/SCALE/E_MIN,DE
COMMON/CONVL/H(5001),WMIN,DW,NW
COMMON/CALC/BRI1(101,101),BRI2(101,101),BRI3(101,101),
$ BRI0(101,101),RAD1(51,51),RAD2(51,51),RAD3(51,51),
$ RAD0(51,51),I1(5001),I2(5001),L1,L2,L3,L4,
$ SPEC1(5001),SPEC2(5001),SPEC3(5001),SPEC0(5001),WK(5001)
DATA PI/3.141592653589/,TWOPI/6.283185307/,EPI2/78.95683521/
C
C ZERO EMITTANCE
C MODE = 2 ANGULAR (IANG=1) DENSITY SPECTRUM
C ICALC = 3
C
C
C VARY PHOTON ENERGY
C
PTOT=0.0
NE=1
IA=NE
E=E_MIN
LAMDA=12398.5/E
R=LAMDA/LAMDAR
I1(IA)=0
I2(IA)=0
RADMAX=0.0
C
C VARY POSITION IN PINHOLE
C
IB=NXP
XPMM=XPMIN+((IB-1)*DXP)
XP=XPMM/1000.0
IC=NYP
YPMM=YPMIN+((IC-1)*DYP)
YP=YPMM/1000.0
RAD1(IB,IC)=0.0
RAD2(IB,IC)=0.0
RAD3(IB,IC)=0.0
RAD0(IB,IC)=0.0
C
C FIND HARMONIC NO. CONTRIBUTING AT THE
C GIVEN WAVELENGTH AND PINHOLE POSITION
C
XE1=XP*GAMMA/D
YE1=YP*GAMMA/D
ALP2=(XE1*XE1)+(YE1*YE1)
I=0
20 I=I+1
ALP2I=(R*I)-K3
A2MAX=ALP2I+(DALPHA*R/N)
IF(A2MAX.LT.ALP2)GOTO 20
A2MIN=ALP2I-(DALPHA*R/N)
IF(A2MIN.GT.ALP2) GOTO 30
IF(I1(IA).EQ.0)I1(IA)=I
I2(IA)=I
ALP=DSQRT(ALP2)
COSPH=0.0
SINPH=1.0
IF(ALP.GT.1.0D-06)THEN
COSPH=XE1/ALP
SINPH=YE1/ALP
ENDIF
CALL BRIGHT(ALP,COSPH,SINPH,KX,KY,I,S0,S1,S2,S3)
RAD1(IB,IC)=F3*S1*SINC(ALP2,ALP2I,R,N)
RAD2(IB,IC)=F3*S2*SINC(ALP2,ALP2I,R,N)
RAD3(IB,IC)=F3*S3*SINC(ALP2,ALP2I,R,N)
RAD0(IB,IC)=F3*S0*SINC(ALP2,ALP2I,R,N)
C
C PRINT IRRADIANCE DISTRIBUTION AT THE GIVEN WAVELENGTH
C
IF(RAD0(IB,IC).NE.0.0)THEN
L1=RAD1(IB,IC)/RAD0(IB,IC)
L2=RAD2(IB,IC)/RAD0(IB,IC)
L3=RAD3(IB,IC)/RAD0(IB,IC)
L4=SQRT(ABS(1.0-L1*L1-L2*L2-L3*L3))
ELSE
L1=0.0
L2=0.0
L3=0.0
L4=0.0
ENDIF
30 IF(RAD0(IB,IC).GT.RADMAX)RADMAX=RAD0(IB,IC)
POWER=1.602D-16*RAD0(1,1)
IF(RAD0(1,1).NE.0.0)THEN
L1=RAD1(1,1)/RAD0(1,1)
L2=RAD2(1,1)/RAD0(1,1)
L3=RAD3(1,1)/RAD0(1,1)
L4=SQRT(ABS(1.0-L1*L1-L2*L2-L3*L3))
ELSE
L1=0.0
L2=0.0
L3=0.0
L4=0.0
ENDIF
IF(IA.EQ.1.OR.IA.EQ.NE)THEN
PTOT=PTOT+(POWER/2.0)
ELSE
PTOT=PTOT+POWER
ENDIF
PTOT=PTOT*DE
RETURN
END
C
C ----------------------------------------------------------
SUBROUTINE BRIGHT(ALPHA,COSPHI,SINPHI,KX,KY,I,S0,S1,S2,S3)
C ----------------------------------------------------------
IMPLICIT DOUBLE PRECISION (A-H,K,O-Z)
DATA KMIN/0.001/
IF(I.LE.0.OR.ALPHA.LT.0.0)GOTO 40
IF(KX.LT.KMIN.AND.KY.LT.KMIN)GOTO 40
IF(KX.LT.KMIN.AND.KY.GT.KMIN)GOTO 10
IF(KX.GT.KMIN.AND.KY.LT.KMIN)GOTO 20
IF(KX.GT.KMIN.AND.KY.GT.KMIN)GOTO 30
10 CALL BRIGH1(ALPHA,COSPHI,SINPHI,KY,I,S0,S1,S2,S3)
RETURN
20 CALL BRIGH1(ALPHA,SINPHI,-COSPHI,KX,I,S0,S1,S2,S3)
S1=-S1
S2=-S2
RETURN
30 CALL BRIGH3(ALPHA,COSPHI,SINPHI,KX,KY,I,S0,S1,S2,S3)
RETURN
40 WRITE(6,9000)
STOP
9000 FORMAT(//' *** INVALID INPUT PARAMETERS IN SUBROUTINE
$ BRIGHT ***')
END
C
C -------------------------------------------------------
SUBROUTINE BRIGH1(ALPHA,COSPHI,SINPHI,K,I,S0,S1,S2,S3)
C -------------------------------------------------------
IMPLICIT DOUBLE PRECISION (A-H,J,K,O-Z)
COMMON/JDATA/JNX(1000),JNY(1000),J0X,J0Y,MAXX,MAXY
DATA NMAX/1000/,TOL1/1.0D-05/,TOL2/1.0D-05/
C
C CALCULATE THE UNDULATOR RADIATION BRIGHTNESS FUNCTION
C FOR A PLANE TRAJECTORY
C USING THE BESSEL FUNCTION APPROXIMATION
C
C CALCULATE VARIABLES X, Y
C
A=1.0+((K*K)/2.0)+(ALPHA*ALPHA)
X=I*2.0*K*ALPHA*COSPHI/A
Y=I*K*K/(4.0*A)
IF(DABS(X).LT.TOL1)GOTO 10
C
C CALCULATE A0, A1 IN THE GENERAL CASE
C
CALL JSET(JNX,J0X,X,TOL2,MAXX,NMAX)
CALL JSET(JNY,J0Y,Y,TOL2,MAXY,NMAX)
CALL JSUM1(X,Y,SUM1,SUM2,I,MAXX,MAXY)
A0=SUM1
A1=((2.0*I*SUM1)+(4.0*SUM2))/X
GOTO 30
C
C CALCULATE A0, A1 WHEN X = 0.0
C
10 CALL JSET(JNY,J0Y,Y,TOL2,MAXY,NMAX)
IF(((I+1)/2).GT.MAXY)RETURN
IF(I.EQ.((I/2)*2))GOTO 20
N1=(-I-1)/2
N2=(-I+1)/2
A0=0.0
A1=JY(N1)+JY(N2)
GOTO 30
20 N=-I/2
A0=JY(N)
A1=0.0
C
C CALCULATE STOKES PARAMETER
C
30 AXR=2.0*I/A*(A0*ALPHA*COSPHI-K*A1/2.0)
AYR=2.0*I/A*(A0*ALPHA*SINPHI)
S0=AXR*AXR+AYR*AYR
S1=AXR*AXR-AYR*AYR
S2=2.0*AXR*AYR
S3=0.0
RETURN
END
C
C -----------------------------------------------------------
SUBROUTINE BRIGH3(ALPHA,COSPHI,SINPHI,KX,KY,I,S0,S1,S2,S3)
C -----------------------------------------------------------
IMPLICIT DOUBLE PRECISION (A-H,J,K,O-Z)
INTEGER Q
COMMON/JDATA/JNX(1000),JNY(1000),J0X,J0Y,MAXX,MAXY
DATA NMAX/1000/,TOL1/1.0D-05/,TOL2/1.0D-05/
C
C CALCULATE THE UNDULATOR RADIATION BRIGHTNESS FUNCTION
C FOR A GENERAL ELLIPTICAL/HELICAL TRAJECTORY
C USING THE BESSEL FUNCTION APPROXIMATION
C
S0R =0.0
S0I =0.0
S1R =0.0
S1I =0.0
SM1R=0.0
SM1I=0.0
C
C CALCULATE VARIABLES X, Y, PHI
C
A=1.0+((KX*KX)/2.0)+((KY*KY)/2.0)+(ALPHA*ALPHA)
X=I*2.0*ALPHA*DSQRT(((KX*SINPHI)**2)+((KY*COSPHI)**2))/A
Y=I*((KY*KY)-(KX*KX))/(4.0*A)
PHI=DATAN2((KX*SINPHI),(KY*COSPHI))
IF(X.LT.TOL1.AND.DABS(Y).LT.TOL1)GOTO 30
IF(X.LT.TOL1)GOTO 10
IF(DABS(Y).LT.TOL1)GOTO 20
C
C SET UP BESSEL FUNCTIONS IN THE GENERAL CASE
C
CALL JSET(JNX,J0X,X,TOL2,MAXX,NMAX)
CALL JSET(JNY,J0Y,Y,TOL2,MAXY,NMAX)
C
C DO THE SUMS
C
Q=0
CALL JSUM2(S0R,S0I,PHI,I,Q)
Q=-1
CALL JSUM2(SM1R,SM1I,PHI,I,Q)
Q=1
CALL JSUM2(S1R,S1I,PHI,I,Q)
GOTO 40
C
C CALCULATE S0,S1,SM1 WHEN X = 0.0
C
10 CALL JSET(JNY,J0Y,Y,TOL2,MAXY,NMAX)
IF(I.EQ.((I/2)*2))GOTO 15
N1=(-I-1)/2
N2=(-I+1)/2
S1R =JY(N1)
SM1R=JY(N2)
GOTO 40
15 N=-I/2
S0R =JY(N)
GOTO 40
C
C CALCULATE S0,S1,SM1 WHEN Y = 0.0
C
20 N1=I
N2=I+1
N3=I-1
CALL JSET(JNX,J0X,X,TOL2,MAXX,NMAX)
S0R = DCOS(N1*PHI)*JX(N1)
S0I =-DSIN(N1*PHI)*JX(N1)
S1R = DCOS(N2*PHI)*JX(N2)
S1I =-DSIN(N2*PHI)*JX(N2)
SM1R= DCOS(N3*PHI)*JX(N3)
SM1I=-DSIN(N3*PHI)*JX(N3)
GOTO 40
C
C CALCULATE S0,S1,SM1 WHEN X = 0.0 AND Y = 0.0
C
30 IF(I.EQ.1)SM1R=1.0
C
C CALCULATE STOKES PARAMETER
C
40 AXR=((2.0*S0R*ALPHA*COSPHI)-(KY*(S1R+SM1R)))*I/A
AXI=((2.0*S0I*ALPHA*COSPHI)-(KY*(S1I+SM1I)))*I/A
AYR=((2.0*S0R*ALPHA*SINPHI)+(KX*(S1I-SM1I)))*I/A
AYI=((2.0*S0I*ALPHA*SINPHI)-(KX*(S1R-SM1R)))*I/A
S0=AXR*AXR+AXI*AXI+AYR*AYR+AYI*AYI
S1=AXR*AXR+AXI*AXI-AYR*AYR-AYI*AYI
S2=2.0*(AXR*AYR+AXI*AYI)
S3=2.0*(AXI*AYR-AXR*AYI)
RETURN
END
C
C --------------------------------------
SUBROUTINE JSUM1(X,Y,S1,S2,I,MAXX,MAXY)
C --------------------------------------
IMPLICIT DOUBLE PRECISION (A-H,J,O-Z)
C
C CALCULATE SUMS S1 AND S2
C
S1=0.0
IF(I.LE.MAXX)S1=JY(0)*JX(I)
S2=0.0
SIGN=1.0
DO 10 N=1,MAXY
SIGN=-SIGN
N1=(2*N)+I
N2=(-2*N)+I
J1=JY(N)
J2=JX(N1)
J3=JX(N2)
S1=S1+(J1*(J2+(J3*SIGN)))
S2=S2+(N*J1*(J2-(J3*SIGN)))
10 CONTINUE
RETURN
END
C
C ------------------------------
SUBROUTINE JSUM2(SR,SI,PHI,I,Q)
C ------------------------------
IMPLICIT DOUBLE PRECISION (A-H,J,K,O-Z)
INTEGER P,Q
COMMON/JDATA/JNX(1000),JNY(1000),J0X,J0Y,MAXX,MAXY
SR=0.0
SI=0.0
DO 10 P=-MAXY,MAXY
N=I+(2*P)+Q
IF(IABS(N).GT.MAXX)GOTO 10
F=JX(N)*JY(P)
SR=SR+(DCOS(N*PHI)*F)
SI=SI-(DSIN(N*PHI)*F)
10 CONTINUE
RETURN
END
C
C -----------------------------
FUNCTION SINC(ALP2,ALP2I,R,N)
C -----------------------------
IMPLICIT DOUBLE PRECISION (A-H,O-Z)
DATA PI/3.141592653589/
C
C CALCULATE THE LINESHAPE FUNCTION
C
SINC=1.0
X=N*PI*(ALP2-ALP2I)/R
IF(DABS(X).LT.1.0D-06)RETURN
SINC=DSIN(X)/X
SINC=SINC*SINC
RETURN
END
C
C --------------
FUNCTION JX(N)
C --------------
IMPLICIT DOUBLE PRECISION (A-H,J,O-Z)
COMMON/JDATA/JNX(1000),JNY(1000),J0X,J0Y,MAXX,MAXY
JX=0.0
IF(IABS(N).GT.MAXX)RETURN
IF(N.NE.0)GOTO 10
JX=J0X
RETURN
10 SIGN=1.0
N1=N
IF(N.GT.0)GOTO 20
N1=-N
IF(N1.NE.((N1/2)*2))SIGN=-1.0
20 JX=JNX(N1)*SIGN
RETURN
END
C
C --------------
FUNCTION JY(N)
C --------------
IMPLICIT DOUBLE PRECISION (A-H,J,O-Z)
COMMON/JDATA/JNX(1000),JNY(1000),J0X,J0Y,MAXX,MAXY
JY=0.0
IF(IABS(N).GT.MAXY)RETURN
IF(N.NE.0)GOTO 10
JY=J0Y
RETURN
10 SIGN=1.0
N1=N
IF(N.GT.0)GOTO 20
N1=-N
IF(N1.NE.((N1/2)*2))SIGN=-1.0
20 JY=JNY(N1)*SIGN
RETURN
END
C
C ----------------------------------------
SUBROUTINE JSET(JNX,J0X,X0,TOL,MAX,NMAX)
C ----------------------------------------
IMPLICIT DOUBLE PRECISION (A-H,J,O-Z)
DIMENSION JNX(1)
DATA BIGNO/1.0D+10/,BIGNI/1.0D-10/
C
C SET UP ARRAY OF BESSEL FUNCTIONS UP TO ORDER MAX
C SUCH THAT JMAX (X) < TOL AND MAX > X
C USING MILLER'S DOWNWARD RECURRENCE ALGORITHM
C MODIFIED FORM OF NUMERICAL RECIPIES ROUTINE BESSJN
C NB] ARGUMENT CAN BE NEGATIVE
C
X=DABS(X0)
IF(X.LE.0.1)THEN
M=4
ELSE
IF(X.LE.1.0)THEN
M=8
ELSE
M=2*((INT(1.18*X)+13)/2)
ENDIF
ENDIF
IF(M.GT.NMAX)GOTO 999
C
TOX=2.0/X
ISUM=0
SUM=0.
BJP=0.
BJ=1.
JNX(M)=1.0
DO 10 N1=M,1,-1
N=N1-1
BJN=N1*TOX*BJ-BJP
BJP=BJ
BJ=BJN
IF(DABS(BJ).GT.BIGNO)THEN
BJ=BJ*BIGNI
BJP=BJP*BIGNI
SUM=SUM*BIGNI
DO 20 I=N1,M
JNX(I)=JNX(I)*BIGNI
20 CONTINUE
ENDIF
IF(N.NE.0)JNX(N)=BJ
IF(ISUM.NE.0)SUM=SUM+BJ
ISUM=1-ISUM
10 CONTINUE
SUM=(2.0*SUM)-BJ
J0X=BJ/SUM
SIGN=1.0
DO 30 N=1,M
SIGN=-SIGN
JNX(N)=JNX(N)/SUM
IF(X0.LT.0.0)JNX(N)=JNX(N)*SIGN
IF(N.LE.DABS(X).OR.JNX(N).GT.TOL)MAX=N
30 CONTINUE
RETURN
999 WRITE(6,9999)
STOP
9999 FORMAT(//' *** OVERFLOW OF BESSEL FUNCTION ARRAY ***')
END
SUBROUTINE GetFromNml( PERIOD,KX,KY,N,ENERGY,CUR,NPHI,DALPHA)
!IMPLICIT REAL*8 (A-H,O-Z)
implicit none
real*8, intent(inout) :: period,KX,KY,ENERGY,CUR,DALPHA
integer, intent(inout) :: N,NPHI
integer :: NCOMP,ICOMP
real*8 :: RCURR,BPASS
integer :: IANGLE,IAPERTURE,IEXTERNAL
character(len=1024) :: FOUT,FIN,FTRAJ,FINT
real*8 :: EMIN,EMAX
real*8 :: THEMIN,THEMAX,PHIMIN,PHIMAX
integer :: NE,NT,NP,NCHECK,IOPT,ITER,IPASS
integer :: I_EDIV,IINT
real*8 :: EDIVX,EDIVY
integer :: i_device, n0
real*8 :: rlau, oldener, rk, rkx, rlen
NAMELIST /PARAIN/ NCOMP,RCURR,ICOMP,BPASS,
$ IANGLE,IAPERTURE,IEXTERNAL,
$ FOUT,FIN,FTRAJ,EMIN,EMAX,
$ THEMIN,THEMAX,PHIMIN,PHIMAX,
$ NE,NT,NP,NCHECK,IOPT,ITER,IPASS,
$ I_EDIV,EDIVX,EDIVY,FINT,IINT
NAMELIST /EPATH1/ I_DEVICE, N0, RLAU, OLDENER, RK, RKX, RLEN
!
!C
!C Read in the parameters from namelist files
!C
OPEN (21, FILE='uphot.nml', STATUS='OLD')
READ (21, NML=PARAIN)
write(6,NML=PARAIN)
CLOSE (21)
OPEN (21, FILE='epath.nml', STATUS='OLD')
READ (21, NML=EPATH1)
write(6,NML=EPATH1)
CLOSE (21)
period = RLAU
kx = 0
ky = rk
n = ncomp
energy = oldener
cur = rcurr
nphi = 0
dalpha = 0.0D0
!C
!C Read in the (energy, theta, phi) array
!C
END SUBROUTINE GetFromNml