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

The MAXIV_DanMAX_pxrd2d Instrument

DanMAX Powder diffraction/Imaging beamline being designed at MAX IV.

Identification

• Site: MAXIV
• Author: Erik B Knudsen (erkn@fysik.dtu.dk)
• Origin: DTU Physics
• Date: Aug 2015

Description

Design study model of the DanMAX PowderX/Imaging beamline.
This early version uses a Gaussian approximation source, and a simple bandpass filter
as the multilayer.

Examples

(Test cases in bold)

• Test: MAXIV_DanMAX_pxrd2d.instr -c E0=15 Detector: Pilatus_2M_I=8.10837e-05

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
E0	keV	The central energy to sample from source model.	35
DE	keV	Spectral width (std. dev. if gaussian source) to sample from source model.	0.05
undK		Undulator K parameter, overrides E0.	0
undDetune	eV	First harmonic detuning in eV. When zero - max flux on axis. If set to approx. 4 eV one can gain ~20% of flux through the aperture.	4
DCM_e0	keV	The energy to tune the Si monochromator to. May be different from E0. If 0 the DCM is controlled by DCM_angle.	35
DMM_e0	keV	The energy to tune the ML monochromator to. May be different from E0. If 0 the DMM is controlled by DMM_angle.	35
oh_premonoh	m	Pre-mono (white beam) slit height.	1e-3
oh_premonow	m	Pre-mono (white beam) slit width.	1e-3
oh_endh	m	OH exit slit height.	1e-3
oh_endw	m	OH exit slit width.	1e-3
PXRDsampleap_h	m	PXRD clean-up aperture height.	300e-6
PXRDsampleap_w	m	PXRD clean-up aperture width.	300e-6
DMM_angle	deg	Glancing angle of the ML.	0
DCM_angle	deg	Glacing angle of the Si-111 monochromator crystals.	0
DCM		If nonzero the high-resolution SI DCM is active.	1
DMM		If nonzero the multilayer mono is active.	0
OH_2DCRL_N		Number of 2D focus CRLs in the optics hutch transfocator. 0 means transfocator is inactive.	0
sample_radius	m	Powder sample cylinder radius	100e-6
pxrd_2d_y	m	Offset of 2d-area detector centre perpendicular to the detector arm.	135e-3
pxrd_2d_tthc	deg	Rotation around the sample tube (i.e. the x-axis) of the 2d-area detector arm.	0
SDD_2D	m	Sample-to-detector distance of the 2d-area detector	150e-3
debugMon		If nonzero, all intermediate monitors appear for debugging purposes.	1
beamStop		If nonzero, a beamstop is in between sample and PXRD 2d-detector.	1
SPLITS		Split-number at the sample position.	100

Links

• Source code for MAXIV_DanMAX_pxrd2d.instr.

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

Generated for mcxtrace 3.10.2

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Last Modified: Monday, 02-Nov-2026 22:21:09 CET