Optimization of multi-TW Ti:sapphire laser system for X-ray laser studies

The time-resolved hard X-ray diffraction endstation KMC-3 XPP for optical pump/X-ray probe experiments at the electron storage ring BESSY II is dedicated to investigating the structural response of thin film samples and heterostructures after their excitation with ultrashort laser pulses and/or electric field pulses. It enables experiments with access to symmetric and asymmetric Bragg reflections via a four-circle diffractometer and it is possible to keep the sample in high vacuum and vary the sample temperature between ∼15 K and 350 K. The femtosecond laser system permanently installed at the beamline allows for optical excitation of the sample at 1028 nm. A non-linear optical setup enables the sample excitation also at 514 nm and 343 nm. A time-resolution of 17 ps is achieved with the `low-α' operation mode of the storage ring and an electronic variation of the delay between optical pump and hard X-ray probe pulse conveniently accesses picosecond to microsecond timescales. Direct time-resolved detection of the diffracted hard X-ray synchrotron pulses use a gated area pixel detector or a fast point detector in single photon counting mode. The range of experiments that are reliably conducted at the endstation and that detect structural dynamics of samples excited by laser pulses or electric fields are presented.

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Theoretical and Experimental Evaluation of Particle size Effect of Iron , Cobalt ,and Nickel Powders Suspended in Al Dura oil on XRF Intensities

Baghdad Science Journal ◽

10.21123/bsj.4.3.475-481 ◽

2007 ◽

Vol 4 (3) ◽

pp. 475-481

Author(s):

Baghdad Science Journal

Keyword(s):

Particle Size ◽

Particle Size Distribution ◽

Laser System ◽

Particle Size Effect ◽

Particle Sizes ◽

Iron Cobalt ◽

X Ray ◽

Nickel Powders ◽

Good Agreement ◽

Cobalt And Nickel

Iron , Cobalt , and Nickel powders with different particle sizes were subjected to sieving and He-Ne laser system to determine the particle size . 1wt% from each powders was blended carefully with 99wt% from Iraqi oil . Microscopic examination were carried for all samples to reveal the particle size distribution . A Siemens type SRS sequential wavelength dispersive(WDS) X-ray spectrometer was used to analyze all samples , and the XRF intensity were determined experimentally and theoretically for all suspended samples , Good agreement between theoretical and experimental results were found .

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Picosecond high power terawatt Nd: Glass laser system for laser fusion and X-ray laser research

Optics Communications ◽

10.1016/0030-4018(76)90656-8 ◽

1976 ◽

Vol 18 (1) ◽

pp. 169-170 ◽

Cited By ~ 6

Author(s):

H. Kuroda ◽

H. Masuko ◽

S. Maekawa

Keyword(s):

High Power ◽

Laser System ◽

Laser Fusion ◽

Glass Laser ◽

X Ray

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INJECTOR STUDY FOR COMPACT HARD X-RAY SOURCE VIA LASER COMPTON SCATTERING

International Journal of Modern Physics B ◽

10.1142/s0217979207042288 ◽

2007 ◽

Vol 21 (03n04) ◽

pp. 488-496 ◽

Cited By ~ 15

Author(s):

RYUNOSUKE KURODA ◽

HIROYUKI TOYOKAWA ◽

NORIHIRO SEI ◽

MASATO YASUMOTO ◽

HIROSHI OGAWA ◽

...

Keyword(s):

Laser System ◽

Spot Size ◽

Laser Spot Size ◽

High Charge ◽

X Ray ◽

Wake Field ◽

Beam Loading ◽

Rf Gun ◽

High Power Laser System ◽

Laser Compton Scattering

Compact hard X-ray source via laser Compton sattering has been developed in SHI and AIST. Our system has the injector and the linac and the high power laser system. The injector has a photo-cathode rf gun with a solenoid magnet. To enhance the X-ray yeild, we are planning to increase electron beam charge up to 5 nC/bunch and to make multi-bunch beam. The beam tracking simulation in the injector have been performed by changing laser spot size, laser pulse width, rf phase and solenoid field to optimize the distance between the injector and the linac for 5 nC/bunch high charge beam. In addition, high charge multi-bunch beam simulation in rf-gun cavity have been carried out to investigate the influence by the beam loading and the wake field.

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