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Related papers: Post-Linac Collimation System for the European XFE…

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The hard X-ray instruments at the Linac Coherent Light Source are in the design phase for upgrades that will take full advantage of the high repetition rates that will become available with LCLS-II-HE. The current X-ray Correlation…

Accelerator Physics · Physics 2023-08-16 Aashwin Mishra , Nicholas Brennan , Tianyu Huang , Jason Jaquith , Hasan Yavas , Matthew Seaberg

A multi-prism lens (MPL) is a refractive x-ray lens with one-dimensional focusing properties. If used as a pre-object collimator in a scanning system for medical x-ray imaging, it reduces the divergence of the radiation and improves on…

Medical Physics · Physics 2021-01-21 Erik Fredenberg , Bjorn Cederstrom , Magnus Aslund , Peter Nillius , Mats Danielsson

We propose a technique, to be used for time-resolved pump-probe experiments, for timing an x-ray free electron laser (XFEL) to a high-power conventional laser with femtosecond accuracy. Our method takes advantage of the same electron bunch…

Accelerator Physics · Physics 2009-11-13 Gianluca Geloni , Evgeni Saldin , Evgeni Schneidmiller , Mikhail Yurkov

To realize and test advanced accelerator concepts and hardware, a beamline is being reconfigured in the Linac Extension Area (LEA) of APS linac. A photo-cathode RF gun installed at the beginning of the APS linac will provide a low emittance…

Accelerator Physics · Physics 2018-06-20 Seunghwan Shin , Yine Sun , Jeff Dooling , Alexander Zholents

The advantage of the linac-ring type electron proton collider is that it allows for the straightforward construction of $\gamma$p collider. In a $\gamma$p collider high energy photons can be generated from Compton backscattering of laser…

Accelerator Physics · Physics 2019-04-08 Zafer Nergiz , Saleh Sultansoy , Husnu Aksakal , Frank Zimmermann

Proposals to determine biomolecular structures from diffraction experiments using femtosecond X-ray free-electron laser (XFEL) pulses involve a conflict between the incident brightness required to achieve diffraction-limited atomic…

Optics · Physics 2015-05-19 Harry M. Quiney , Keith A. Nugent

Recovery of three-dimensional structure from single particle X-ray scattering of completely randomly oriented diffraction patterns as predicted few decades back has been real due to the advent of the new emerging X-ray Free Electron Laser…

Soft Condensed Matter · Physics 2015-11-24 M. Uddin

We review the results of our research on damage mechanisms in materials irradiated with femtosecond free-electron-laser (FEL) pulses. They were obtained using our hybrid approach, XTANT (X-ray-induced Thermal And Nonthermal Transitions).…

Materials Science · Physics 2019-02-26 Nikita Medvedev , Viktor Tkachenko , Vladimir Lipp , Zheng Li , Beata Ziaja

The length, complexity and cost of the present Final Focus designs for linear colliders grows very quickly with the beam energy. In the paper, a novel final focus system is presented and compared with the one proposed for NLC. This new…

Accelerator Physics · Physics 2008-11-26 P. Raimondi , A. Seryi

We discuss the ultimate precision for ALR, and therefore for the weak mixing angle, at a high-luminosity Linear Collider. Drawing on our experience at the SLC, and considering various machine parameter sets for the NLC and for TESLA, it…

High Energy Physics - Experiment · Physics 2009-10-31 P. C. Rowson , M. Woods

We study the relaxation dynamics and intersystem-crossing to the metastable state in laser-pumped tetra and hexa-coordinated nickel porphyrins. We use a ligand-field model which takes into account the crystal field created by the porphyrin…

Strongly Correlated Electrons · Physics 2015-11-29 Javier Fernandez-Rodriguez , Jun Chang , Arthur J. Fedro , Michel van Veenendaal

The motion and photon emission of electrons in a superlattice may be described as in an undulator. Therefore, there is a close analogy between ballistic electrons in a superlattice and electrons in a free electron laser (FEL). Touching upon…

Accelerator Physics · Physics 2017-05-23 I. V. Dovgan

We discuss a concept of a lower-energy version of the Large Hadron-electron Collider (LHeC), delivering electron-hadron collisions concurrently to the hadron-hadron collisions at the high-luminosity LHC at CERN. Assuming the use of a 20 GeV…

High Energy Physics - Experiment · Physics 2026-05-05 Kevin David J André , Laurent Forthomme , Bernhard Holzer , Krzysztof Piotrzkowski

The possibility of a Photon-Photon collider extension to the Beam dump of the $17.5$ GeV European XFEL has been discussed before as the first high energy collider of its sort. It would not just be to study the concept of photon colliders…

High Energy Physics - Phenomenology · Physics 2024-10-28 Marten Berger , Gudrid Moortgat-Pick , Monika Wüst

Options for future $lepton-proton,lepton-nucleus,\gamma -proton,\gamma -nucleus$ and FEL$\gamma -nucleus$ colliders are discussed. In the spirit of this content, we consider TESLAxHERA, LEPxLHC, $\mu$xTEVATRON, exRHIC, LinacxLHC,…

High Energy Physics - Experiment · Physics 2007-05-23 S. Sultansoy , A. K. Ciftci , E. Recepoglu , O. Yavas

Together with one of its variants, the recently proposed phase-merging enhanced harmonic generation (PEHG) free-electron lasers (FELs) have been systematically studied in this paper. Different form the standard-HGHG, a transverse gradient…

Accelerator Physics · Physics 2015-06-18 Chao Feng , Haixiao Deng , Dong Wang , Zhentang Zhao

This report on Photon Colliders briefly reviews three main issues: physics motivation, possible parameters and technical feasibility, plans of works and international cooperation. New scheme of laser optics at the interaction region is…

High Energy Physics - Experiment · Physics 2011-01-13 Valery Telnov

We demonstrate X-ray phase contrast microscopy performed at the European X-ray Free-Electron Laser sampled at 1.128 MHz rate. We have applied this method to image stochastic processes induced by an optical laser incident on water-filled…

Permeable mirrors are typically used for coupling photons out of laser cavities. A similar approach was proposed for output coupling photons from the cavities of x-ray free-electron laser (XFEL) oscillators. One of the Bragg-reflecting…

Accelerator Physics · Physics 2019-10-30 Yuri Shvyd'ko

In this brief overview we will reflect on the process of the design of the linear collider (LC) final focus (FF) optics, and will also describe the theoretical and experimental efforts on design and practical realisation of a prototype of…