MTOF calibration data: scan in angles and voltages performed in CASYMS in Dec 1994 and Feb 1995. MTOF as well as CASYMS were commanded via GSEOS.

The scans were performed in Dec 94 and Feb 95, once with the "normal" piece at the exit of WAVE, once with a replacement of this piece with a smaller and gold-plated part (Feb 95). The WAVE is flown in the Dec 94 configuration.

There were some measurements in Januay 95 as well, but no scans.

Data processing
The original data is stored as GSEOS "recorder files". The scientific (SC) and housekeeping (HK) data is extracted from these files by u_rrec6.c in the case of the Dec 94 data and by rec2fad.c, rec2hkp2.c, split_hk.c and spsc.c in the case of the Feb 1995 data.

CELIAS HK and SC data are produced at slightly different rates. Because the two data types are transmitted via two completely independent channels, the data must be recombined after reception. This can be done with the help of the (long) EDB counter, a number which is increased by the DPU for every EDB. The counter is available in the HK data (4 bytes) as well as in the SC data (1 byte, that is: counter MOD 20). The following IDL code was used to recombine the two data sets (for the case of Dec 1994):

mcomb = dblarr(11,1500)                       ; combined data
for i=0,1499 do begin & $
  edbcnt= mhk(33,i) & $                       ; EDB counter from HK
  scpos = where(mrt_edbcnt EQ edbcnt,cnt) & $ ; find same number in SC
  if(cnt EQ 1) then begin & $                 ; if found
    scpos        = scpos(0) & $               ; store array index
    mcomb(0,i)   = edbcnt & $                 ; write counter to result
    mcomb(1:2,i) = mhk(12:13,i) & $           ; write WEq and Vf
    mcomb(3,i)   = mhk(29,i) & $              ; write HPS to result
    mcomb(6:10,i)= mrt([12,11,10,9,8],scpos) & $ ; write rates
  endif & $
endfor

MTOF calibration Dec 94

The beam for this measurement was:
type:      4He+ at 2.5 kV
intensity: 2.14 pA on 5 cmsq or 2.671E6 particles/cmsq/sec
The scan scheme was:
Change: WEq - Vf - alpha - beta ( fastest --> slowest )
Values:
WEq Steps:  30  45  60  75  90 105 120 135 150 165 180 195 210 225 240,
            45 sec each
Vf  Steps:  78 128 179
alpha    :  30  40  50  60 deg
beta     : -10   0  10  20 deg
Note: The scan was interupted after the completion of the
  beta = 0 deg step.
Note: for beta = 0 deg, alpha = 60 deg the FSR to incoming
  flux ratio is
      r = 1.5E4 / 2.671E6 = 0.006

The beam for this measurement was:
type:      4He+ at 2.5 kV
intensity: 1.05 pA on 5 cmsq or 1.311E6 particles/cmsq/sec
The scan scheme was:
Change: WEq - Vf - alpha - beta ( fastest --> slowest )
Values:
WEq Steps:  40  55  70  85 100 115 130 145 160 175 190 205 220 235 250,
            45 sec each
Vf  Steps:  78 128 179
alpha    :  30  40  50  60 deg and  35  45 55 65 deg
beta     : -10   0  10  20 deg and -15 deg
Note: for beta = 0 deg, alpha = 60 deg the FSR to incoming flux ratio is
      r = 2.6E4 / 1.311E6 = 0.02