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Grant
Agency: Cordis | Branch: FP7 | Program: CP | Phase: INFRA-2007-2.1-01 | Award Amount: 2.10M | Year: 2008

The need for advanced light sources is well documented by the creation of new facilities such as SOLEIL, DIAMOND, MAX IV and the upgrades of older facilities. The applications of light sources encompass all aspects of sciences spanning the fields of physics, chemistry, biology, material science, electronics and medicine. An option to provide more light to this community is to develop small laboratory sources beyond the standard and rotating anodes. Recently, several small scale synchrotron sources were proposed, whereby the most advanced system is the Mirrorcle developed by Prof. Yamada (Japan) with three functioning systems. In this project, we will design a complete small facility around the Mirrorcle source. The Mirrorcle is based on two RF klystron driven microtrons to accelerate the electrons first and second to obtain a electron storage ring with constant energy (6 MeV or 20 MeV) and high current (3A). The relativistic electrons produce intense far infrared radiation (FIR) and when targets are inserted in the electron path intense soft and hard X-rays can be produced from 90 eV up to the electron energy. The first goal of this project is to complete the characterization of the full radiation spectrum generated by the Mirrorcle . This includes parameters such as the brilliance, the beam divergence, polarization and monochromacity. The second goal is to design a specific Mirrorcle ring with four output ports, namely a FIR port, a soft X-rays port, a hard X-rays port and one port where the full spectrum is available. This includes designing the required targets as well as internal mirrors configurations. The third goal is to design specific beam-lines for these four ports that take into account the source. Finally, two specific user stations will be designed that make use of the unique abilities offered by such a small scale source, namely a multi-diagnostic in-situ, real-time nano-material synthesis system and a medical imaging and therapy station. In the first two years if the project the focus was indeed on using the Mirrorcle as the source for photons. In the third year of the project that has changes and the activities related to the Mirrorcle have stopped. They have been replaced by activities with liquid metal jet sources (for hard x-rays) and with laser plasma sources (for soft x-rays). However the general design goals have remained the same throughout the project.


Yamada H.,Photon Production Laboratory Ltd. | Yamada H.,Ritsumeikan University | Minkov D.,Ritsumeikan University | Shimura Y.,Ritsumeikan University | And 6 more authors.
Journal of Synchrotron Radiation | Year: 2011

The only available tabletop electron storage rings are the machines from the MIRRORCLE series. The electrons are accelerated in a microtron and injected into the storage ring. During its circulation, each electron passes through a tiny target many times, emitting a photon beam. Both the spectrum and the angular distribution of the radiation depend on the material, the thickness and the shape of the target. In this paper measured angular distributions of the radiation from several different targets in the magnetic field of the 20 MeV storage ring MIRRORCLE-20SX are presented. The detector comprises a 3 mm × 3 mm × 8.5 μm plastic scintillator (PS) coupled to a photomultiplier by a bundle of optical fibers. The output of the photomultiplier is digitized by an IF converter. This detector is sensitive mostly to soft X-ray radiation, and its PS is moved by a mechanical system in a plane perpendicular to the radiation axis. The measured angular distributions for Mo and Sn targets contain an annulus which is attributed to transition radiation. The angular distributions for Al, carbon nanotube and diamond-like carbon (DLC) targets show some suppression of the radiation along the magnetic field. This is the first evidence of observation of the angular distribution of synchrotron Cherenkov radiation, which represents Cherenkov radiation in a magnetic field. The power radiated from the DLC target is estimated. © 2011 International Union of Crystallography.


Tanaka R.,Setsunan University | Hanashima T.,Photon Production Laboratory Ltd. | Yamada H.,Ritsumeikan University
Bioscience, Biotechnology and Biochemistry | Year: 2010

A correlation between the quantitative changes in L-methionine analogs, the ratio of D-serine/L-serine during the pupal stage, and metamorphosis was observed. The glycoside appearing at low blood sugar values during the pupal stage was isolated and characterized as D-glucosyl-L-tyrosine. 1H-NMR indicated the appearance and increase of this glycoside, and Mirrorcle Ray CV4 equipment was used to take X-ray pictures of the pupal bodies. The results indicate that -cyclic di-Lglutamate and L-methionine sulfone might be concerned with ammonia assimilation in the pupae, and that D-glucosyl-L-tyrosine served as a switch for the fatty acid (pupal oil) dissimilation hybrid system.


Taibi A.,University of Ferrara | Cardarelli P.,University of Ferrara | Di Domenico G.,University of Ferrara | Marziani M.,University of Ferrara | And 3 more authors.
Applied Physics Letters | Year: 2010

We demonstrate both theoretically and experimentally that edge-enhancement effects are produced when objects, in contact with the x-ray detector, are imaged by using very broad x-ray spectra. Radiographs of thin Al objects have been obtained with a table-top synchrotron source which generates x-rays in the energy range from a few kilo-electron-volts up to 6 MeV. Edge-enhancement effects arise from the combination of x-ray absorption (kilo-electron-volt part of the spectrum) and secondary particle emission (mega-electron-volt part of the spectrum) within the sample. The exact contribution of absorption and emission profiles in the edge-enhanced images has been calculated via Monte Carlo simulation. © 2010 American Institute of Physics.


Yamada T.,Photon Production Laboratory Ltd. | Yamada H.,Photon Production Laboratory Ltd. | Yamada H.,Ritsumeikan University | Maeo S.,Photon Production Laboratory Ltd. | And 5 more authors.
AIP Conference Proceedings | Year: 2012

In this paper, advanced features of MIRRORCLE-CV4, the tabletop synchrotron are described. Extremely small emitter size in one micron order and continuous X-ray energy ranging from 8 KeV to MeV are the advantage in the phase contrast imaging, micrometer order space resolution, and tunability of X-ray energy for various specimens like biological specimen, animal, human body, or motor engine block etc. The machine size is only 2m × 0.5m like X-ray tube. © 2012 American Institute of Physics.


Yamada H.,Photon Production Laboratory Ltd. | Maeo S.,Photon Production Laboratory Ltd. | Hasegawa D.,Photon Production Laboratory Ltd. | Yamada M.,Photon Production Laboratory Ltd. | And 2 more authors.
X-Ray Spectrometry | Year: 2012

MIRRORCLE generates brilliant far-infrared, extreme ultraviolet, and hard X-ray beams in a body of tabletop electron storage ring (ESR). In this paper, we report the most recent development of the 4- and 1-MeV, 8-cm orbit radius ESR. X-rays are generated in Bremsstrahlung mechanism by a micron-order ball shape target placed in the ESR electron orbit. Nature of the source is different from either X-ray tubes or synchrotron light sources (SLS). MIRRORCLE generates high-density photons such as SLS, but the emitter size is much smaller than that. The X-ray angular distribution is 1/γ determined by the normalized electron energy γ, thus is much wider than of SLS with the MeV electrons. The energy spectrum is polychromatic like SLS but continues up to MeV range. MIRRORCLE has advantages in magnified phase contrast X-ray 2D and 3D imaging for light as well as heavy materials. It has an advantage in fluorescent analysis of micron-sized objects because focus size is in microns. It is advanced in an ultrasmall-angle scattering experiment by its micron-order focus point. Extended X-ray absorption fine structure is carried out in an energy dispersive mode because of the white spectrum and the wide angular spread of radiation. © 2012 John Wiley & Sons, Ltd.


Patent
Photon Production Laboratory Ltd. | Date: 2013-11-07

The charged particle storage system includes: a storage ring circulating, by a perturbating device, charged particles injected from outside; a power source supplying an electric current to the perturbating device; and a charged particle beam generating device. The charged particle beam generating device includes a DC accelerator that generates a constant voltage to accelerate electrons and thereby generates a beam of the electrons. While a current having its current intensity changing in a sinusoidal wave is caused to flow through the perturbating device continuously for at least 10 s by a power source, an electron beam output from the charged particle beam generating device is injected to the storage ring continuously for at least 10 s. Thus, a current larger than that stored by the conventional resonance injection method can be stored in the storage ring, and an X-ray having higher intensity can be generated.


PubMed | Photon Production Laboratory Ltd
Type: Journal Article | Journal: Journal of synchrotron radiation | Year: 2011

The only available tabletop electron storage rings are the machines from the MIRRORCLE series. The electrons are accelerated in a microtron and injected into the storage ring. During its circulation, each electron passes through a tiny target many times, emitting a photon beam. Both the spectrum and the angular distribution of the radiation depend on the material, the thickness and the shape of the target. In this paper measured angular distributions of the radiation from several different targets in the magnetic field of the 20 MeV storage ring MIRRORCLE-20SX are presented. The detector comprises a 3mm 3mm 8.5m plastic scintillator (PS) coupled to a photomultiplier by a bundle of optical fibers. The output of the photomultiplier is digitized by an IF converter. This detector is sensitive mostly to soft X-ray radiation, and its PS is moved by a mechanical system in a plane perpendicular to the radiation axis. The measured angular distributions for Mo and Sn targets contain an annulus which is attributed to transition radiation. The angular distributions for Al, carbon nanotube and diamond-like carbon (DLC) targets show some suppression of the radiation along the magnetic field. This is the first evidence of observation of the angular distribution of synchrotron Cherenkov radiation, which represents Cherenkov radiation in a magnetic field. The power radiated from the DLC target is estimated.

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