MariX, an advanced MHz-class repetition rate X-ray source for linear regime time-resolved spectroscopy and photon scattering

Luca Serafini28
Estimated H-index: 28
Luca Serafini2
Estimated H-index: 2
+ 90 AuthorsGiorgio Rossi31
Estimated H-index: 31
(University of Milan)
Abstract The need of a fs-scale pulsed, high repetition rate, X-ray source for time-resolved fine analysis of matter (spectroscopy and photon scattering) in the linear response regime is addressed by the conceptual design of a facility called MariX (Multi-disciplinary Advanced Research Infrastructure for the generation and application of X-rays) outperforming current X-ray sources for the declared scope. MariX is based on the original design of a two-pass two-way superconducting linear electron accelerator, equipped with an arc compressor, to be operated in CW mode (1 MHz). MariX provides FEL emission in the range 0.2–8 keV with 1 0 8 photons per pulse ideally suited for photoelectric effect and inelastic X-ray scattering experiments. The accelerator complex includes an early stage that supports an advanced inverse Compton source of very high-flux hard X-rays of energies up to 180 keV that is well adapted for large area radiological imaging, realizing a broad science programme and serving a multidisciplinary user community, covering fundamental science of matter and application to life sciences, including health at preclinical and clinical level.
Figures & Tables
📖 Papers frequently viewed together
13 Authors (Vittoria Petrillo, ..., Giorgio Rossi)
4 Citations
5 Citations
#1Alessandro Curcio (Sapienza University of Rome)H-Index: 14
#2Giuseppe Dattoli (ENEA)H-Index: 34
Last. Alberto Petralia (ENEA)H-Index: 14
view all 4 authors...
Abstract The efficiency of Free Electron Laser (FEL) Oscillator devices is a fairly complicated function of the various parameters which characterize the device itself. We explore the relevant dependences by the use of the scaling formulas describing the FEL Oscillator dynamics and providing the relevant design elements. We obtain a quantitative dependence of the efficiency on the key FEL parameters (small signal gain coefficient, saturation intensity, electron beam qualities...) and discuss the...
13 CitationsSource
#1Kai LiH-Index: 7
#2Jiawei YanH-Index: 5
Last. Haixiao DengH-Index: 12
view all 5 authors...
X-ray free-electron laser oscillator (XFELO) is expected to be a cutting edge tool for fully coherent X-ray laser generation, and undulator taper technique is well-known for considerably increasing the efficiency of free-electron lasers (FELs). In order to combine the advantages of these two schemes, FEL amplifier seeded by XFELO is proposed by simply using a chirped electron beam. With the right choice of the beam parameters, the bunch tail is within the gain bandwidth of XFELO, and lase to sat...
12 CitationsSource
#2Thomas SchietingerH-Index: 9
Last. H. H. BraunH-Index: 9
view all 115 authors...
The SwissFEL X-ray Free Electron Laser (XFEL) facility started construction at the Paul Scherrer Institute (Villigen, Switzerland) in 2013 and will be ready to accept its first users in 2018 on the Aramis hard X-ray branch. In the following sections we will summarize the various aspects of the project, including the design of the soft and hard X-ray branches of the accelerator, the results of SwissFEL performance simulations, details of the photon beamlines and experimental stations, and our fir...
183 CitationsSource
#1M. Placidi (LBNL: Lawrence Berkeley National Laboratory)H-Index: 6
#2S. Di Mitri (Elettra Sincrotrone Trieste)H-Index: 21
Last. G. Penn (LBNL: Lawrence Berkeley National Laboratory)H-Index: 8
view all 4 authors...
© 2017 Elsevier B.V. Many research and applications areas require photon sources capable of producing gamma-ray beams in the multi-MeV energy range with reasonably high fluxes and compact footprints. Besides industrial, nuclear physics and security applications, a considerable interest comes from the possibility to assess the state of conservation of cultural assets like statues, columns etc., via visualization and analysis techniques using high energy photon beams. Computed Tomography scans, wi...
7 CitationsSource
#1In Soo KoH-Index: 14
#2Heung-Sik KangH-Index: 10
Last. Ki Bong LeeH-Index: 1
view all 72 authors...
The construction of Pohang Accelerator Laboratory X-ray Free-Electron Laser (PAL-XFEL), a 0.1-nm hard X-ray free-electron laser (FEL) facility based on a 10-GeV S-band linear accelerator (LINAC), is achieved in Pohang, Korea by the end of 2016. The construction of the 1.11 km-long building was completed by the end of 2014, and the installation of the 10-GeV LINAC and undulators started in January 2015. The installation of the 10-GeV LINAC, together with the undulators and beamlines, was complete...
77 CitationsSource
Abstract The advent of short electron bunches in high brightness linear accelerators has raised the awareness of the accelerator community to the degradation of the beam transverse emittance by coherent synchrotron radiation (CSR) emitted in magnetic bunch length compressors, transfer lines and turnaround arcs. Beam optics control has been proposed to mitigate that CSR effect. In this article, we enlarge on the existing literature by reviewing the validity of the linear optics approach in a peri...
11 CitationsSource
#1S. Di Mitri (Elettra Sincrotrone Trieste)H-Index: 21
#2M. Cornacchia (Elettra Sincrotrone Trieste)H-Index: 4
Bunch length magnetic compression is used in high-brightness linacs driving free-electron lasers (FELs) and particle colliders to increase the peak current of the injected beam. To date, it is performed in dedicated insertions made of few degrees bending magnets and the compression factor is limited by the degradation of the beam transverse emittance owing to emission of coherent synchrotron radiation (CSR). We reformulate the known concept of CSR-driven optics balance for the general case of va...
16 CitationsSource
The free-electron laser FLASH at DESY in Hamburg, Germany, has been extended by a second undulator line in a separate tunnel and a new experimental hall (Figure 1). The existing undulator line, called FLASH1, and the new one, which includes provisions for external seeding to be realized later, called FLASH2, both use the same linear accelerator. They are operated in tandem by separating the pulse train into two sections, which are then directed to the different undulators. The linac energy is de...
3 CitationsSource
#1Enrico Allaria (Elettra Sincrotrone Trieste)H-Index: 32
#2D. Castronovo (Elettra Sincrotrone Trieste)H-Index: 9
Last. Marco ZangrandoH-Index: 26
view all 36 authors...
A seeded free-electron laser with a two-stage harmonic upshift configuration provided tunable and coherent soft-X-ray pulses. The configuration produced single-transverse-mode, narrow-spectral-bandwidth femtosecond pulses with energies of several tens of microjoules and a low pulse-to-pulse wavelength jitter at wavelengths of 10.8 nm and below.
251 CitationsSource
#1Enrico AllariaH-Index: 32
#2Roberto Appio (Lund University)H-Index: 5
Last. Marco ZangrandoH-Index: 26
view all 71 authors...
Researchers demonstrate the FERMI free-electron laser operating in the high-gain harmonic generation regime, allowing high stability, transverse and longitudinal coherence and polarization control.
631 CitationsSource
Cited By16
#1S. Di Mitri (Elettra Sincrotrone Trieste)H-Index: 5
#2Max Cornacchia (Stanford University)H-Index: 14
Last. Simone Spampinati (Elettra Sincrotrone Trieste)H-Index: 20
view all 6 authors...
#1M. OpromollaH-Index: 4
#2Alberto BacciH-Index: 42
Last. Vittoria PetrilloH-Index: 24
view all 8 authors...
1 CitationsSource
#1N. S. MirianH-Index: 2
#2M. OpromollaH-Index: 4
Last. Vittoria PetrilloH-Index: 24
view all 5 authors...
Fine time-resolved analysis of matter - i.e. spectroscopy and photon scattering - in the linear response regime requires a fs-scale pulsed, high repetition rate, fully coherent X-ray source. A seeded Free-Electron Laser (FEL) driven by a Super-Conducting Linac, generating 10^{8}10^{10}coherent photons at 2-5 keV with abou 0.5 MHz of repetition rate, can address this need. The seeding scheme proposed is the Echo-Enabled Harmonic Generation, alimented by a FEL Oscillator working at 13.6 nm w...
1 CitationsSource
#1Jiawei YanH-Index: 5
#2Zhangfeng GaoH-Index: 2
Last. Zhentang ZhaoH-Index: 10
view all 26 authors...
The spectroscopic techniques for time-resolved fine analysis of matter require coherent x-ray radiation with femtosecond duration and high average brightness. Seeded free-electron lasers (FELs), which use the frequency up-conversion of an external seed laser to improve temporal coherence, are ideal for providing fully coherent soft x-ray pulses. However, it is difficult to operate seeded FELs at a high repetition rate due to the limitations of present state-of-the-art laser systems. Here, we rep...
6 CitationsSource
#1P. CardarelliH-Index: 7
#2Alberto BacciH-Index: 42
Last. Luca SerafiniH-Index: 28
view all 21 authors...
Abstract MariX is a research infrastructure conceived for multi-disciplinary studies, based on a cutting-edge system of combined electron accelerators at the forefront of the world-wide scenario of X-ray sources. The generation of X-rays over a large photon energy range will be enabled by two unique X-ray sources: a Free Electron Laser and an inverse Compton source, called BriXS (Bright compact X-ray Source). The X-ray beam provided by BriXS is expected to have an average energy tunable in the r...
2 CitationsSource
#1Vittoria PetrilloH-Index: 24
#2M. OpromollaH-Index: 4
Last. Luca SerafiniH-Index: 28
view all 14 authors...
9 CitationsSource
#1Antonio SarnoH-Index: 13
#2Giovanni MettivierH-Index: 22
Last. Luca Serafini (University of Milan)H-Index: 2
view all 11 authors...
Kilovoltage rotational radiotherapy of breast cancer has been proposed as an alternative procedure to the conventional breast radiotherapy with 6 MeV photon beams. The use of orthovoltage X-ray tubes rotating around the breast, instead of conventional medical linear accelerators, would allow for significant reduction of acquisition and management costs. However, the employment of an X-ray tube limits the maximum available photon flux: a synchrotron radiation source could provide a high dose rate...
1 CitationsSource
#1Andrea BellandiH-Index: 1
Last. Sven PfeifferH-Index: 10
view all 4 authors...
Abstract Superconducting accelerating cavities for continuous wave low-current particle accelerators requires a tight resonance control to optimize the RF power costs and to minimize the beam delivery downtime. When the detuning produced by radiation pressure becomes comparable to the RF bandwidth, the monotonic instability starts to affect the cavity operation. When this instability is triggered by external vibrations or drifts, the accelerating field amplitude drops rapidly, and the beam accel...
#1Alberto BacciH-Index: 42
#2Angelo BosottiH-Index: 7
Last. Daniele SertoreH-Index: 17
view all 14 authors...
We present a study of an innovative scheme to generate high repetition rate (MHz-class) GeV electron beams by adopting a two-pass two-way acceleration in a super-conducting Linac operated in Continuous Wave (CW) mode. The beam is accelerated twice in the Linac by being re-injected, after the first pass, in opposite direction of propagation. The task of recirculating the electron beam is performed by an arc compressor composed by 14 Double Bend Achromat (DBA). In this paper, we study the main iss...