####################################################
# Oleg Shpyrko <oshpyrko@physics.ucsd.edu>
# requesting 5 days, at minimum=3 days
# beamline 34ID-C, Ptychographical Coherent Diffractive Imaging of extended test objects
# instrument 34ID-C coherent
####################################################
# top:/home/www/beamtime-requests/req01225.txt
# UNICAT Member Beam Time Request  #1225
# created Fri May 02 15:39:35 CDT 2008
####################################################

apsrun:
	2008-02

beamline:
	34ID-C

collaboration:
	No

collaborator_Paul:
	ON

contact:
	oshpyrko@physics.ucsd.edu

days:
	5

description:
	We propose hard x-ray lensless imaging experiments to test the performance of the Ptychographic Iterative Engine (PIE) in a reflection (Bragg diffraction) geometry. Previous demonstrations of PIE using hard x-rays [1] are done only in the transmission geometry. Furthermore, only two dimensional reconstructions using PIE have been demonstrated using visible light and x-rays[1, 2]; here we propose to test the performance of PIE in reconstructing three dimensional objects. Lastly, we propose to test in an experimental setting an algorithm that addresses and corrects one the fundamental problems of PIE: incorrect knowledge of the illumination function positions due to finite uncertainty of scanning motor positions.

[see PDF document sent via email]

equipment_required:
	n/a

experiment:
	Ptychographical Coherent Diffractive Imaging of extended test objects

foreign_nationals:
	Oleg Shpyrko, Jyoti Mohanty, Ash Tripathi (all have access to Argonne)

hazards:
	n/a

instrument:
	34ID-C coherent

instrument_other:
	

minimumdays:
	3

name:
	Oleg Shpyrko

new_request:
	ON

nonmembers:
	Oleg Shpyrko, Jyoti Mohanty, Ash Tripathi  (UC San Diego)

submit:
	Submit

unacceptable_dates:
	n/a

z34ID_change_undulator:
	no

z34ID_details:
	

z34ID_on_axis:
	no

z34ID_parasitic:
	yes

z34ID_taper:
	no


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