4.0

MaskBTP v1

../_images/MaskBTP-v1_dlg.png

MaskBTP dialog.

Summary

Algorithm to mask detectors in particular banks, tube, or pixels.

Properties

Name Direction Type Default Description
Workspace InOut Workspace   Input workspace (optional)
Instrument Input string   One of the following instruments: ARCS, CNCS, CORELLI, HYSPEC, MANDI, NOMAD, POWGEN, REF_M, SEQUOIA, SNAP, SXD, TOPAZ, WAND, WISH. Allowed values: [‘’, ‘ARCS’, ‘CNCS’, ‘CORELLI’, ‘HYSPEC’, ‘MANDI’, ‘NOMAD’, ‘POWGEN’, ‘REF_M’, ‘SEQUOIA’, ‘SNAP’, ‘SXD’, ‘TOPAZ’, ‘WAND’, ‘WISH’]
Bank Input string   Bank(s) to be masked. If empty, will apply to all banks
Tube Input string   Tube(s) to be masked. If empty, will apply to all tubes
Pixel Input string   Pixel(s) to be masked. If empty, will apply to all pixels
MaskedDetectors Output int list   List of masked detectors

Description

Algorithm to mask detectors in particular banks, tube, or pixels. It applies to the following instruments only: ARCS, CNCS, CORELLI, HYSPEC, NOMAD, POWGEN, SEQUOIA, SNAP, TOPAZ. For instruments with rectangular position sensitive detectors (POWGEN, SNAP, TOPAZ), the tube is corresponding to the x coordinate, and pixel to the y coordinate. For example, on SNAP Bank=”1”, Tube=”3” corresponds to ‘SNAP/East/Column1/bank1/bank1(x=3)’, and Bank=”1”, Tube=”3”, Pixel=”5” is ‘SNAP/East/Column1/bank1/bank1(x=3)/bank1(3,5)’.

If one of Bank, Tube, Pixel entries is left blank, it will apply to all elements of that type. For example:

  • MaskBTP(w,Bank = “1”) will completely mask all tubes and pixels in bank 1.
  • MaskBTP(w,Pixel = “1,2”) will mask all pixels 1 and 2, in all tubes, in all banks.

The algorithm allows ranged inputs:

  • Pixel = “1-8,121-128” is equivalent to Pixel = “1,2,3,4,5,6,7,8,121,122,123,124,125,126,127,128”

Note

Either the input workspace or the instrument must be set. If the workspace is set, the instrument is ignored.

Usage

a=MaskBTP(Instrument='CNCS',Tube='1-3')
b=MaskBTP(Workspace='CNCSMaskBTP',Instrument='CNCS',Bank='40-50',Pixel='1-10')
c=MaskBTP(Workspace='CNCSMaskBTP',Instrument='CNCS',Bank='42')
print("Detectors masked")
print("Step 1: 50 * 3 * 128 = {0.size}".format(a))
print("Step 2: 11 * 8 * 10 = {0.size}".format(b))
print("Step 3: 1 * 8 * 128 = {0.size}".format(c))

print("Here are some of the masked detectors:")
instrument=mtd['CNCSMaskBTP'].getInstrument()
print("A pixel Bank 42, detector 42700:  {}".format(instrument.getDetector(42700).isMasked()))
print("Pixel 1 in Tube 4 in Bank 45, detector 45440:  {}".format(instrument.getDetector(45440).isMasked()))
print("Pixel 100 in Tube 2 in Bank 45, detector 45283:  {}".format(instrument.getDetector(45283).isMasked()))
print("")
print("And one that should not be masked")
print("Pixel 128 in Tube 8 in Bank 50, detector 51199:  {}".format(instrument.getDetector(51199).isMasked()))

Output:

Detectors masked
Step 1: 50 * 3 * 128 = 19200
Step 2: 11 * 8 * 10 = 880
Step 3: 1 * 8 * 128 = 1024
Here are some of the masked detectors:
A pixel Bank 42, detector 42700:  True
Pixel 1 in Tube 4 in Bank 45, detector 45440:  True
Pixel 100 in Tube 2 in Bank 45, detector 45283:  True

And one that should not be masked
Pixel 128 in Tube 8 in Bank 50, detector 51199:  False

The instrument view should look like

MaskBTP.png

Categories: Algorithm Index | Transforms\Masking | Inelastic\Utility

Source

Python: MaskBTP.py (last modified: 2018-10-05)