DEFINE INSTRUMENT DMC_diff(Det_start, char *samplefile, char *monfile, 
	char *lambdafile,int repeat)
DECLARE
%{
double sample_radius = 0.005;
double sample_height = 0.03;
double Det_start;
double Det_end;
char option_list[150];
%}

INITIALIZE
%{
Det_end= Det_start + 80;
sprintf(option_list,"banana theta limits [%f %f] bins=400, file=det9.dat",Det_start,Det_end);
printf("%s \n",option_list);
%}


TRACE

COMPONENT msa = Arm() /* monochromator - sample arm */
   AT (0, 0, 0) ABSOLUTE

/*
COMPONENT progress = Progress_bar(percent=5,flag_save=1)
	AT (0,0,.1) ABSOLUTE
*/

COMPONENT in = Virtual_input(file=lambdafile,repeat_count=repeat)
	AT (0,0,0.64) RELATIVE msa ROTATED (0,0,0) RELATIVE msa

COMPONENT out2_slit = Slit(
        xmin=-0.01, xmax=0.01, ymin=-0.06, ymax=0.06)
  AT (0,0,0.65) RELATIVE msa ROTATED (0,0,0) RELATIVE msa  

COMPONENT PSD_sample = MKMonitor(
    xmin=-0.05, xmax=0.05, ymin=-0.07, ymax=0.07,controlfile=monfile)
  AT ( 0, 0, 1.5) RELATIVE msa

/* 
COMPONENT PSD_sample =  PSD_monitor(
    xmin=-0.05, xmax=0.05, ymin=-0.07, ymax=0.07,
    nx=80, ny=80, filename="PSD_sample.dat",controlfile=monfile,dumpCount=1000)
  AT ( 0, 0, 1.5) RELATIVE msa
COMPONENT PSD_sample =  PSD_monitor(
    xmin=-0.05, xmax=0.05, ymin=-0.07, ymax=0.07,
    nx=80, ny=80, filename="PSD_sample.dat")
  AT ( 0, 0, 1.5) RELATIVE msa
*/
COMPONENT sa_arm = Arm()
   AT (0, 0, 2.82) RELATIVE msa 
   ROTATED (0, 0, 0) RELATIVE msa 

COMPONENT sample = PowderN (
        d_phi0=0, radius=sample_radius, h=sample_height, 
        pack=1, Vc=1076.98, reflections = samplefile,
        sigma_a=0.2, focus_aw=80, focus_ah=3.5, target_index=+1)
  AT ( 0, 0, 0) RELATIVE sa_arm 

COMPONENT Det9 = Monitor_nD(
  xwidth=3.0,yheight=0.09,
  options=option_list)
  AT (0,0,0.000001) RELATIVE sa_arm
  ROTATED (0, 0, 180) RELATIVE sa_arm
  

END