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gtarget.param 5.1 KiB
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; MEC - updated for E02-109/E04-001  1/8/05
;
; This is the target parameter file.  Numbers 1-10 are solid targets,
; 11-16 are cryotargets, and 17-20 are dummy/optics.
;
;The target order is:
;
;       Au_1%         C_2%        Fe_1%
;       C_1%          C_5%        C_6%
;       Cu_6%         Be_3%       Au_6%
;       ---
;       H (4cm)       ---
;       ---           ---
;       D (4cm)       ---
;       Dummy (4cm)
;       optics (8cm)
;       optics (4 foil)
;       NO target


; non-existant targets have A=Z=M=...=0
; dummy targets have A=Z=M=...=0
; empty/dummy cells have A=Z=M=...= AS ALUMINUM (MAY NEED TO CHANGE FOR DUMMY DATA!!!)
;
;
; 1=tuna can, 2=beer can, 21=solid
 gtarg_type   =  21.     ,    21.     ,   21.
	         21.     ,    21.     ,   21.
                 21.     ,    21.     ,   21.
                 21.
                 1.      ,     1.
                 1.      ,     1.
                 1.      ,     1.
                 21.     ,    21.
                 21.     ,    21.

  gtarg_z     = 79.0     ,     6.0    ,   26.0
                 6.0     ,     6.0    ,    6.0
                29.0     ,     0.0    ,   79.0
                 0.0
                 1.0     ,     0.0
                 0.0     ,     0.0
                 1.0     ,     0.0
                 13.0    ,     0.0
		 0.0     ,     0.0

  gtarg_a     = 197.0    ,    12.0    ,    57.0
                12.0     ,    12.0    ,    12.0
                64.0     ,     0.0    ,   197.0
                 0.0
                 1.0     ,     0.0
                 0.0     ,     0.0
                 2.0     ,     0.0
                 27.0    ,     0.0
		 0.0     ,     0.0

  gtarg_mass  = 196.9237    ,   12.0107   ,    56.85
                12.0107     ,   12.0107   ,    12.0107 
                63.546      ,   0.0  ,        196.9237    
                 0.0
                 1.00727647 ,    0.0 
                 0.0   ,    0.0
                 2.01355322,     0.0
                 26.98       ,   0.0
                 0.0        ,    0.0


; Next is the radiation length in percent...  SOLID=APPROXIMATE, CRYO=GUESSES!!!!!
  gtarg_lrad  =  1.0      ,    2.0     ,     1.0
                 1.0      ,    5.2     ,     6.4
                 6.0      ,    3.0     ,     6.0
                 0.0 
                 0.46     ,    0.0
                 0.0      ,    0.0
                 0.55     ,    0.0
                 2.2      ,    0.0
                 0.0      ,    0.0


; Next is the thickness of the target in g/cm^2...
; NOTE THE 3HE,4HE USE THICKNESS FROM KAON EXPERIMENT, WHICH HAD DIFFERENT CELLS!!!

  gtarg_thick =  0.0417 ,    0.6706    ,     0.119
                 0.346  ,    1.79      ,     2.735
                 0.7986 ,    0.5       ,     0.3795
                 0.0
                 0.289  ,    0.0
                 0.0    ,    0.0
                 0.648  ,    0.0
                 0.526  ,    0.0
		 0.0    ,    0.0


; Finally, the density of the target in g/cm^3.

; Densities taken from http://pdg.lbl.gov/AtomicNuclearProperties
;  used "Carbon (compact)" for Carbon - could be way off
;  3He and 4He come from taking the total thickness (above) / 4cm - thickness could be way off

  gtarg_dens  =  19.320    ,  2.265   ,     7.87
                 2.265     ,  2.265   ,     2.265
                 8.960     ,  0.0     ,     19.320
                 0.0
                 0.0723    ,  0.0
                 0.0       ,  0.0
                 0.167     ,  0.0
		 2.265     ,  0.0
                 0.0       ,  0.0

; Target angle:  =90 deg. is perpendicluar to beam
;                <90 deg. is face towards HMS
;                >90 deg. is face towards SOS 
; for E99118 target was rotated 20.3deg. to face HMS =>69.7deg. = 1.2164945rad
  gtarg_theta =  1.570796327 


;general target energy loss parameters. Vansyoc Mar.98

;target cell****************
; JRA: 09/19/04: Updated based on Meekins' report, June 30, 2004
; 		gcell_radius was 1.0 - don't know why.  Changed to 2.0
;  DID NOT UPDATED WALL/END/FRONT THICKNESSES - Don't know the units :(

      gcell_radius = 2.008
      gz_cell 	 =  13.0
      ga_cell 	 =  27.0
      gcell_den 	=   2.7
      gwall_thk	 =  0.03429
      gend_thk  	=   0.03429
      gfront_thk  =  0.020574   

;Air gap between the chamber and the entrance window
      gair_dens 	=   0.00121
      gair_thk 	=   0.018
      gair_a 	=   14.68
      gair _z 	=   7.32


;HMS********
;    HMS scattering chamber window specs.********** 
      hscat_win_thk  = 0.109728
      hscat_win_den =  2.70
      hscat_win_z   =  13.0
      hscat_win_a   =  27.0
;    HMS entrance window specs.********************
      hdet_ent_thk  =  0.049098
      hdet_ent_den  =  0.878636
      hdet_ent_z    =  2.67
      hdet_ent_a    =  4.67
;SOS********
;    SOS scattering chamber window specs.**********
      sscat_win_thk =  0.054864
      sscat_win_den =  2.70
      sscat_win_z   =  13.0
      sscat_win_a   =  27.0
;    SOS entrance window specs.********************
      sdet_ent_thk  =  0.016421
      sdet_ent_den  =  0.862
      sdet_ent_z    =  2.67
      sdet_ent_a    =  4.67
;eloss debug   0 = off,1 = on
;      gelossdebug = 0
;use old cryo geometry? (1)
;      old_tgeom = 1

;