Extended Format SCALERS.DAT Lines 42-83

EPMA Probe

Extended Format SCALERS.DAT Lines 42-83

Lines 42-65 (default baseline, window, gain and bias and deadtime PHA settings for each crystal)

     1.       1.       .3      .45       "default PHA baseline voltages1"

     1.       1.       1.       1.       "default PHA baseline voltages2"

     0.       0.       0.       0.       "default PHA baseline voltages3"

     0.       0.       0.       0.       "default PHA baseline voltages4"

     0.       0.       0.       0.       "default PHA baseline voltages5"

     0.       0.       0.       0.       "default PHA baseline voltages6"

     9.       9.       9.7      8.       "default PHA window voltages1"

     9.       9.       9.       9.       "default PHA window voltages2"

     0.       0.       0.       0.       "default PHA window voltages3"

     0.       0.       0.       0.       "default PHA window voltages4"

     0.       0.       0.       0.       "default PHA window voltages5"

     0.       0.       0.       0.       "default PHA window voltages6"

     32.      16.      32.      64.      "default PHA gain1"

     32.      32.      64.      64.      "default PHA gain2"

     0.       0.       0.       0.       "default PHA gain3"

     0.       0.       0.       0.       "default PHA gain4"

     0.       0.       0.       0.       "default PHA gain5"

     0.       0.       0.       0.       "default PHA gain6"

     1674.    1764.    1750.    1650.    "default detector bias1"

     1750.    1800.    1800.    1700.    "default detector bias2"

      0.       0.      0.       0.       "default detector bias3"

      0.       0.      0.       0.       "default detector bias4"

      0.       0.      0.       0.       "default detector bias5"

      0.       0.      0.       0.       "default detector bias6"

These lines are used to set the individual default PHA settings for the baseline, window, gain and bias on the different spectrometer and crystal basis. These crystal based parameter values replace the older default PHA settings in lines 24-27. The older values are still read and used as defaults for backward compatibility.

 

You only need to enter values for as many crystals as you have for each spectrometer (up to six crystals per spectrometer). The range of allowable values is the same as the PHA parameters for lines 24-27.

 

Lines 66-77 (default Inte/Diff mode and Deadtime PHA settings for each crystal)

      0        0       0        0        "default PHA inte/diff modes1"

      0        0       0        0        "default PHA inte/diff modes2"

      0        0       0        0        "default PHA inte/diff modes3"

      0        0       0        0        "default PHA inte/diff modes4"

      0        0       0        0        "default PHA inte/diff modes5"

      0        0       0        0        "default PHA inte/diff modes6"

      0        0       0        0        "default detector deadtimes1"

      0        0       0        0        "default detector deadtimes2"

      0        0       0        0        "default detector deadtimes3"

      0        0       0        0        "default detector deadtimes4"

      0        0       0        0        "default detector deadtimes5"

      0        0       0        0        "default detector deadtimes6"

These lines are used to set the individual default PHA settings for the inte/diff mode and deadtime on the different spectrometer and crystal basis. These crystal based deadtime parameter values replace the older default settings in line 13.

 

This is mainly for non-Cameca microprobes where there is no deadtime pulse stretching electronics and the instrument may benefit from individual deadtime values for each crystal (energy range). The older deadtime values are still read and used as defaults for backward compatibility if these new values are zero.

 

There was no default inte/diff mode previously so the default inte/diff mode is zero (integral mode).

 

Lines 78-83 (Cameca large area crystal flag)

      0        0       0        0        "Cameca large area crystal flag1"

      0        0       0        0        "Cameca large area crystal flag2"

      0        0       0        0        "Cameca large area crystal flag3"

      0        0       0        0        "Cameca large area crystal flag4"

      0        0       0        0        "Cameca large area crystal flag5"

      0        0       0        0        "Cameca large area crystal flag6"

This section allows the user to specify whether any crystals are of the large area type. This flag applies only to the Cameca SX100/SXFive and is only used to properly set the correct index for crystal flipping. Two crystal spectrometer use indices 1 and 4 unless they are of the large area type in which case they use indices 2 and 4.

 

To indicate that a crystal is of the large area type edit the flag to be a non zero value for each large area crystal. Note that the Cameca very large area crystals are always index 1 and there is only one crystal per spectrometer (it cannot be flipped).

 

Lines 84-90 (not used at this time)

    0        0        0        0         "unused"

    0        0        0        0         "unused"

    0        0        0        0         "unused"

    0        0        0        0         "unused"

    0        0        0        0         "unused"

    0        0        0        0         "unused"

    0        0        0        0         "unused"