! L1=L2=4m
MASK/CLEAR
MASK/CLEAR/TIME
L/WAV 1.75 16.5 0.05/LOG
! adjusted to suit weak scatter
!L/Q 0.0045,0.001,0.0205,-.05,0.25,-.08,0.4,-.12,3.0
!L/Q 0.005,0.001,0.008,-0.08,1.0
! weak scatter
!L/Q 0.004, 0.004, 0.054, -0.12, 1.0
!L/Q 0.004,0.002,0.04,-0.08,0.3,-.12,1.0
!L/Q 0.0035 1.0 0.08/log
L/Q 0.0035,0.001,0.2,-.025,0.25,-.08,0.6
L/QXY 0 0.16 .002/lin
! note increase lower time limit here
!BACK/MON/TIMES 85000 98000
BACK/M2 85000 98000
!check BACK/M4
DET/REAR
GRAVITY/ON
!
mask/rear h0
mask/rear h190>h191
mask/rear v0
mask/rear v191
mask/front h0
mask/front h190>h191
mask/front v0
mask/front v191
! dead wire near top
mask/front h156>h159
!
mask/time 13000 16250
!PRINT masking off beamstop arm 12mm wide at 19 degrees
PRINT not masking beam stop arm, M4 out
!mask/line 13 19 
!
L/R 47 -1 3
L/Q/RCut 400
L/Q/WCut 8.0
PRINT RCut=400mm WCut=8 Ang
!L/SP 1 36864
!MON/LENGTH=17.937 2
!
! use this for rear
MON/DIRECT=DIRECT_16246_4m_Rear_17Dec12.dat
! use for front, this command has to come second!
MON/DIRECT/FRONT=DIRECT_6958_4m_rescaled_09Mar12.dat
MON/TRANS/SPECTRUM=2/INTERPOLATE
!TRANS/TRANSPEC=4/SHIFT=-70
TRANS/TRANSPEC=3
!  set monitor 2 to interpolate
MON/SPECTRUM=2/INTERPOLATE
FIT/TRANS/LOG 1.75 16.5
!PRINT FIT/TRANS/OFF
!FIT/TRANS/OFF
!
! 28/07/13 centre from GDW20 19618
set centre -57.8 -167.8
!
! 28/07/13 from 19618 gdw20 (likely off by few% due to using M3 trans here)
set scales 0.1640 1.0 1.0 1.0 1.0
! correction to actual sample position, measured cryo at 320mm before shutter, notionally 81mm before shutter
! DLS set up 81 - 133 =-52
! normal changer offset +53
! rotating rack 100mm before shutter = 81 - 100 = -19
! old rotating rack 131mm before shutter = 81 - 131 = -50
! linkam 42mm before shutter = 81 - 42 = 39
SAMPLE/OFFSET 53
! Correction to SANS2D encoders in mm 
DET/CORR REAR X -16.0
! note rear Z was 58, but needs change all masks 9/11 on to 47
DET/CORR REAR Z 47.0
! 7/8/12 front at 2.6m is at slightly too high Q values, was X -44
DET/CORR FRONT X -24.0
DET/CORR FRONT Y -20.0
DET/CORR FRONT Z 47.0
DET/CORR FRONT ROT 0.0
! (cf 115D Perkins)  80 is just inside window, 386 instead of DT's 306, but seems to work? , 48 should be central grid
DET/CORR FRONT RADIUS 48.0
DET/CORR FRONT SIDE 0.0
!
!! 28/07/13 MASK132G 4m A1=20,A2=8 M3 trans Briscoe, with RWcut