Space Research Laboratory

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===== EFFECTIVITY CORRECTIONS - HED 3X HIT LEVELS =====

**Format(s): f30, f40, f50**

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  ERNE Effectivity Coefficients for HED 3x Hit Levels

  Version 4.0 (TM format f40, used also for f30 and f50)

  Usage: multiply lev-3 intensity values for measurement periods with HED 3x
         hit  levels by the tabulated numbers below.


  The values are from two events calculated by IDL  procedure x3corr v4.0:

   Span A: 2000-07-17 00:00 - 2000-07-17 24:00 (Decline phase of an exceptionally big SEP)

   Span B: 2000-10-16 09:00 - 2000-10-17 09:00 (Rise and decline of a moderate event)

  0) The estimates are based on proton measurements.
  1) The resulting LED estimates were in reasonable agreement except that the
     coefficient for LED-2 was exceptionally high (between 3 to 4) throughout
     the whole span B (tested in shorter spans).
  2) There was no data for LED-1 in span B.
  3) No data for the highest HED energies in span A.
  4) Relative HED coefficient differences from A and B vary between 2 % to 40 %. The
     values from span B were typically more moderate (smaller).
  5) Except for the first LED channel the LED coefficients for span  A are reasonably
     close to unity. This seems to indicate that the HED hit level has no effect on
     the measured LED intensities throughout most of the LED energy range.

  Below LED coefficients (0-33) have been taken from span A and HED coefficients (34-67)
  from span B.

  NOTE-1: He3 and He4 values are currently copies of p values
  NOTE-2: Spectral dependence (especially for HED channels) should be studied more closely.
  NOTE-3: Effect of HED S1X H2 breakage (2000-12-20) has to be studied. Point 1) above
          could have been an indicator for the upcoming problems.


  Version history:

    4.0 - 2002-05-08
          Original version, ER




    --------------------------------------------------
         p            He3          He4
    --------------------------------------------------
      1.15576       1.15576      1.15576  ;  0 LED  1
      1.02908       1.02908      1.02908  ;  1	    2
      1.03529       1.03529      1.03529  ;  2	    3
     0.999792      0.999792     0.999792  ;  3	    4
     0.998039      0.998039     0.998039  ;  4	    5
     0.995398      0.995398     0.995398  ;  5	    6
     0.986679      0.986679     0.986679  ;  6	    7
     0.988969      0.988969     0.988969  ;  7	    8
      1.00032       1.00032      1.00032  ;  8	    9
     0.999411      0.999411     0.999411  ;  9	   10
      1.00343       1.00343      1.00343  ; 10	   11
     0.995677      0.995677     0.995677  ; 11	   12
     0.997212      0.997212     0.997212  ; 12	   13
     0.991435      0.991435     0.991435  ; 13	   14
     0.991161      0.991161     0.991161  ; 14	   15
      1.00188       1.00188      1.00188  ; 15	   16
      1.00322       1.00322      1.00322  ; 16	   17
      1.00271       1.00271      1.00271  ; 17	   18
     0.997279      0.997279     0.997279  ; 18     19
     0.987929      0.987929     0.987929  ; 19	   20
      1.00012       1.00012      1.00012  ; 20	   21
     0.988218      0.988218     0.988218  ; 21	   22
     0.998467      0.998467     0.998467  ; 22	   23
     0.998554      0.998554     0.998554  ; 23	   24
     0.997129      0.997129     0.997129  ; 24	   25
     0.985219      0.985219     0.985219  ; 25	   26
      1.00193       1.00193      1.00193  ; 26	   27
     0.993951      0.993951     0.993951  ; 27	   28
     0.994125      0.994125     0.994125  ; 28	   29
     0.993178      0.993178     0.993178  ; 29	   30
     0.990930      0.990930     0.990930  ; 30	   31
      1.01312       1.01312      1.01312  ; 31	   32
     0.991435      0.991435     0.991435  ; 32	   33
      1.01801       1.01801      1.01801  ; 33	   34

      1.23969       1.23969      1.23969  ; 34 HED  1
      1.06101       1.06101      1.06101  ; 35	    2
     0.983813      0.983813     0.983813  ; 36	    3
      1.01190       1.01190      1.01190  ; 37	    4
     0.932741      0.932741     0.932741  ; 38	    5
     0.882918      0.882918     0.882918  ; 39	    6
     0.923102      0.923102     0.923102  ; 40	    7
      1.06117       1.06117      1.06117  ; 41	    8
      1.32185       1.32185      1.32185  ; 42	    9
      1.10353       1.10353      1.10353  ; 43	   10
      1.02137       1.02137      1.02137  ; 44	   11
      1.00778       1.00778      1.00778  ; 45	   12
      1.01309       1.01309      1.01309  ; 46	   13
      1.01946       1.01946      1.01946  ; 47	   14
      1.02189       1.02189      1.02189  ; 48	   15
      1.03439       1.03439      1.03439  ; 49	   16
      1.05931       1.05931      1.05931  ; 50	   17
      1.12093       1.12093      1.12093  ; 51	   18
      1.25086       1.25086      1.25086  ; 52	   19
      1.47581       1.47581      1.47581  ; 53	   20
      2.30518       2.30518      2.30518  ; 54	   21
      5.08858       5.08858      5.08858  ; 55	   22
      16.5111       16.5111      16.5111  ; 56	   23
      209.109       209.109      209.109  ; 57	   24
      42.9205       42.9205      42.9205  ; 58	   25
      23.6362       23.6362      23.6362  ; 59	   26
      23.4933       23.4933      23.4933  ; 60	   27
      35.9855       35.9855      35.9855  ; 61	   28
      30.7161       30.7161      30.7161  ; 62	   29
      12.3082       12.3082      12.3082  ; 63	   30
      5.75892       5.75892      5.75892  ; 64	   31
      4.47055       4.47055      4.47055  ; 65	   32
      5.81951       5.81951      5.81951  ; 66	   33
      4.05501       4.05501      4.05501  ; 67	   34

  
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