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McStas: ESS_Brilliance_2014 Instrument at ESS

[ Identification | Description | Input parameters | Output parameters | Links ]

The ESS_Brilliance_2014 Instrument

This instrument produces the ESS 2014 updated brilliance, including the "pancake" moderator option.

Identification

  • Site: ESS
  • Author: Peter Willendrup (pkwi@fysik.dtu.dk)
  • Origin: DTU Fysik
  • Date: 20130425
  • Version:(Unknown)

Description

This instrument produces the ESS 2014 updated brilliance, including the "pancake" moderator option.

The Brilliance_monitor is used to determine both the mean and peak brilliances, plus pulse-shapes for different wavelengths.

Note that to reproduce the curves listed in Troels Schoenfeldt's paper on the topic, you need to look at the "collimated" monitors that
take neutrons from only part of the moderator surface.

Note also that the 2014 version of the moderator spectra emits neutrons from a FLAT surface through the component origo, positioned tangentially to
the cold moderator "bucket". This means that you may need to shift the position of the moderator along z, when introducing it to your existing instruments.

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
frac 0.5
power 5
Yheight 0.015
np 1
ISleft 0.5
lambdamin 0.1
lambdamax - 20

Links

  • Source code for ESS_Brilliance_2014.instr.
  • A reference/HTML link for more information

[ Identification | Description | Input parameters | Output parameters | Links ]

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Fri Jan 18 10:06:10 2019


Last Modified: Friday, 18-Jan-2019 11:06:10 CET
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