Motivation of the CoDI Workshop
As part of the experimental capabilities of the ALBA-II project the beamline "CoDI" (Coherent Diffraction Imaging) has been approved recently for construction (https://www.cells.es/en/science-at-alba/alba-ii-upgrade).
CoDI beamline main research focus will be imaging of in situ and operando processes involving relatively thick samples with nanometer spatial resolution. For these proposes, CoDI has being proposed as a long beamline what provides unique coherent capabilities and nano focuses sizes for the study of complex nano-structured materials.
The main goal of this CoDI-WS is to bring together current users and experts in the different types of nano-imaging techniques with researchers interested in using these techniques in the future.
In order to do so, the WS agenda is split in two parts. Initially, there will be three seminars related to present Coherent Diffraction Imaging techniques both using diffraction and forward scattered x-ray beams.
These will be followed by a seminar explaining the technical details and capabilities of the accepted long beamline proposed for ALBA-II.
In the second part of the workshop, a serie of short talks will present the initial fan of scientific cases that CoDI has being proposed to tackle using nano-imaging resolution techniques:
(i) computer chips; (ii) cement hydration; (iii) Earth and planetary sciences; (iv) quantum materials; (v) photo-electrocatalysis; (vi) optoelectronic materials; and (vii) spintronics.
The WS will finish with a round table to envisage future actions to enlarge the Spanish coherent nano-imaging community.
The abstract of the CoDI beamline proposal is reproduced below for your convenience.
We warmly welcome you to the workshop.
On behalf of the complete CoDI supporting team,
Angel Rodriguez-Fernandez, European XFEL
Miguel A.G. Aranda, Universidad de Malaga
CoDI proposal abstract
This document details the proposal for the Coherent Diffraction Imaging beamline (CoDI) at ALBA II.
The main scope and uniqueness of CoDI is to perform in situ and operando characterization of thick samples with nanometer resolution exploiting:
(i) the coherence of ALBA II,
(ii) the possibility of building a 250 meters long beamline,
(iii) the availability of room for a unique sample detector distance of 20 m, as a new building will be constructed.
To achieve these goals, CoDI is optimized for:
(i) A range of energies between 10-30 keV to probe thick samples in their relevant conditions,
(ii) An efficient control of the coherence and flux using a secondary source to tailor the beam features of the experiments to be carried out,
(iii) The use of a nano-focusing Kirkpatrick–Baez (KB) mirror (sub-50 nm focus) that enable a long working distance, more than 150 mm, that allows to accommodate in situ and operando sample environments,
(iv) Multilayer Laue lenses (MLLs) to produce the ultimate efficient nano-focus (sub-10 nm focus) for ultra-high resolution X-ray imaging,
(v) A long sample to detector distance that enables high-solid angle resolution with current direct conversion detectors.
These features will make CoDI not only one of the forefront beamlines for scanning nanoimaging techniques (X-ray diffraction or X-ray fluorescence) but also for coherent imaging in the forward direction
(ptychography and holography) and in diffraction conditions (Bragg-CDI, Bragg-ptychography, and teleptychography).
As a result of its capabilities and flexibility, CoDI will contribute to key strategic sectors of ALBA research, the European Union, such as clean and affordable energy, health, sustainability, novel material
and technology production. This is illustrated by selecting several key scientific cases that will enormously benefit from CoDI unique performances.
With the use of scanning and coherent X-ray techniques CoDI will help in the better comprehension and design of catalytic reactors, semiconductors chips or nanomaterials for biology.
But also, CoDI will help in the understanding of exoplanetary materials or geological natural process.
Finally, it is important to highlight that CoDI synergizes with ALBA and its current set of facilities by providing new nano-characterization capabilities for in situ and operando systems that complement:
i) The imaging capabilities of FaXToR and MISTRAL photon beamlines,
ii) The JEMCA (Joint Electron Microscopy Center at ALBA) electron microscopy platform,
iii) The InCAEM (In situ Correlative facility for Advanced Energy Materials) set of equipment.
