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	 RS: Scintillator thickness and Distance to front/back faces of layers
	 ---------------------------------------------------------------------

						Takeshi K. Komatsubara (KEK)
						 latest updated: 2002-Nov-12(Tue)


  * RRSEG(19) was changed from 84.720 cm (In T.Sekiguchi's original version)
     to 84.673 cm, with the assumption that the new L19 thickness is 0.9525 cm


		UMC						KOFIA
		===						=====
                    Front Face      Thickness     FF+T       	    RRSEG
                    ------------    ----------    -----------       ------- 
   RS-layer  T:      45.0816765      0.6350000     45.7166748        45.717
   RS-layer  2:      45.7166748      1.9050000     47.6216736        47.622
   RS-layer  3:      47.6216736      1.9050000     49.5266724        49.527
   RS-layer  4:      49.5266724      1.9050000     51.4316711        51.432
   RS-layer  5:      51.4316711      1.9050000     53.3366699        53.337
   RS-layer  6:      53.9635658      1.9050000     55.8685646        55.869
   RS-layer  7:      55.8685646      1.9050000     57.7735634        57.774
   RS-layer  8:      57.7735634      1.9050000     59.6785622        59.679
   RS-layer  9:      59.6785622      1.9050000     61.5835609        61.584
   RS-layer 10:      61.5835609      1.9050000     63.4885597        63.489
   RS-layer 11:      65.7353516      1.9050000     67.6403503        67.640
   RS-layer 12:      67.6403503      1.9050000     69.5453491        69.545
   RS-layer 13:      69.5453491      1.9050000     71.4503479        71.450
   RS-layer 14:      71.4503479      1.9050000     73.3553467        73.355
   RS-layer 15:      75.5591431      1.9050000     77.4641418        77.464
   RS-layer 16:      77.4641418      1.9050000     79.3691406        79.369
   RS-layer 17:      79.3691406      1.9050000     81.2741394        81.274
   RS-layer 18:      81.8150406      1.9050000     83.7200394        83.720
   RS-layer 19:      83.7200394      0.9525000     84.6725388        84.673(*)


 o UMC
	- geomrs.F and geodat.F
	- TSCNRS = 1.905: RS counter thickness
	- TTRGRS = 0.635: T-counter thickness
	- TSCN19 = 0.9525: new layer19 thickness
	- Distance (cm) to front faces of layers (FF) are calculated 
	   with the following parameters.
		o RINRS =  44.526: inner radius of the first RS 'cavity'
		o TINRS =  0.4763: thickness of the first RS inner support
		o TCLRRS = 0.079375: thickness of inner clearance gap 
		o TCAVBL(1-7): thickness of each RS 'cavity' containing the RS counters

			Cavity#1 [OG/L5/L4/L3/L2/LT/IG] :   8.730
			Cavity#2 [OG/L10/L9/L8/L7/L6/IG]:  10.000
			Cavity#3 [OG/RSSC/IG]		:   1.468
			Cavity#4 [OG/L14/L13/L12/L11/IG]:   8.052
			Cavity#5 [OG/RSSC/IG]		:   1.468
			Cavity#6 [OG/L17/L16/L15/IG]	:   6.104
			Cavity#7 [OG/L19/L18/IG]	:   3.282315

  		  	[Lx== RS Layer x, IG==Inner Gap, OG==Outer Gap
			 following the order stored in LAYRBL]
		   Thickness of outer clearance gap in each cavity is calculated 
		   from TCABVL, TCLRRS, TTRGRS and TSCNRS.  
		o TWALRS = 0.15189: thickness of RS inner and outer supports

	   FF of  T-counter = (RINRS+TINRS)                        + TCLRRS
	   FF of  6-counter = (RINRS+TINRS) + TCAVBL(1) + TWALRS   + TCLRRS
	   FF of 11-counter = (RINRS+TINRS) + TCAVBL(1) + TWALRS 
                                            + TCAVBL(2) + TWALRS 
                                            + TCAVBL(3) + TWALRS   + TCLRRS 
	   FF of 15-counter = (RINRS+TINRS) + TCAVBL(1) + TWALRS 
                                            + TCAVBL(2) + TWALRS 
                                            + TCAVBL(3) + TWALRS
                                            + TCAVBL(4) + TWALRS
                                            + TCAVBL(5) + TWALRS   + TCLRRS 
	   FF of 18-counter = (RINRS+TINRS) + TCAVBL(1) + TWALRS 
                                            + TCAVBL(2) + TWALRS 
                                            + TCAVBL(3) + TWALRS
                                            + TCAVBL(4) + TWALRS
                                            + TCAVBL(5) + TWALRS
                                            + TCAVBL(6) + TWALRS   + TCLRRS 

 o KOFIA
	- $KOFIA_USER/rstack_rd.F, modified by T.Sekiguchi
	- RRSEG(21) = Distance (cm) to back faces of layers,
	   which should be identical to 'Distance to Front Face + Thickness'
	   in UMC.
	- RSTCK / 45.082/ ! inner radius of RS
        - TSCIN /  1.905 / ! average thickness of scintillator layer
        - T-counter thickness = 0.635cm
	- RS 19-counter thickness = 0.9525 cm
          ( instead of 1.000 cm in T.Sekiguchi's original version ). 

--- End of this note.