####################################################
# Christoph Rau <rau@anl.gov>
# requesting 3 days, at minimum=2 days
# beamline 33BM, Microtomography with two dimensional collimated beam at 33BM
# instrument 33BM-C tomography
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# top:/home/www/beamtime-requests/req00520.txt
# UNICAT Member Beam Time Request  #520
# created Sat Dec 06 17:51:34 CST 2003
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beamline:
	33BM

collaboration:
	Yes

contact:
	rau@anl.gov

days:
	3

description:
	During the last experiment, we performed the first scientific application of microtomography at UNICAT (coll. M. Harris and T. La'Shay Terry; Purdue University). We managed to perform six tomographic scans, showing a clear difference of the structure of the silicon powders in function of the preparation. However, the intensity of the beam was relatively weak and didn’t allow us to exploit the full dynamic range and the maximal resolution of the camera.
This time we would like to examine, if it is useful to perform such experiments with a two-dimensional collimation. We want to reduce the acquisition time and increase the quality of the data. Although we expect a strong contribution of the bent crystal on the homogeneity of the illumination, we hope that these artifacts can be removed with flatfield corrections. We will carry out this study in continuation of the scientific collaboration with Purdue University (study of size distribution in silicon dioxide powders).

equipment_required:
	

experiment:
	Microtomography with two dimensional collimated beam at 33BM

foreign_nationals:
	

hazards:
	

instrument:
	33BM-C tomography

instrument_other:
	

minimumdays:
	2

name:
	Christoph Rau

nonmembers:
	M. Harris,
T. La'Shay Terry

unacceptable_dates:
	- when Apogee camera is used at 33 ID
- Tomography experiment at 33ID
- experiment prefered at beginning of the run

z34ID_details:
	


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