Ultra-high precision x-ray polarimetry with artificial diamond channel cuts at the beam divergence limit

Bernhardt, Hendrik; Schmitt, Annika; Grabiger, Benjamin; Marx-Glowna, Berit; Loetzsch, R.; Wille, Hans‐Christian; Bessas, Dimitrios; Chumakov, A. I.; Rüffer, R.; Röhlsberger, Ralf; Stöhlker, Thomas; Uschmann, I.; Paulus, Gerhard G.; Schulze, K. S.

doi:10.1103/physrevresearch.2.023365

Cited by 25 publications

(32 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We note that this value is about an order of magnitude larger than the one predicted to be accessible in the head-on collision of a state-of-the-art petawattclass high-intensity-laser and free-electron-laser (FEL) pulses of ω O( 10) keV [439][440][441][442][443]. For X-rays of ω O(10) keV the possibility of measuring such tiny ellipticities has been demonstrated experimentally [412][413][414]. While these x-ray techniques cannot be used at 400 MeV, in the latter parameter regime pair-production polarimetry may be used [418,419].…”

Section: Vacuum Birefringencementioning

confidence: 82%

See 1 more Smart Citation

Expanding Nuclear Physics Horizons with the Gamma Factory

Budker,

Berengut,

Flambaum

et al. 2021

Preprint

View full text Add to dashboard Cite

The Gamma Factory (GF) is an ambitious proposal, currently explored within the CERN Physics Beyond Colliders program, for a source of photons with energies up to ≈ 400 MeV and photon fluxes (up to ≈ 10 17 photons per second) exceeding those of the currently available gamma sources by orders of magnitude. The high-energy (secondary) photons are produced via resonant scattering of the primary laser photons by highly relativistic partially-stripped ions circulating in the accelerator. The secondary photons are emitted in a narrow cone and the energy of the beam can be monochromatized, eventually down to the ≈ 1 ppm level, via collimation, at the expense of the photon flux. This paper surveys the new opportunities that may be afforded by the GF in nuclear physics and related fields. CONTENTS 11.2. Photon Splitting 48 11.3. Photon Scattering 48 12. Nuclear physics with tertiary beams 49 12.1. Tertiary beams at the GF 49 12.2. Polarized electron, positron and muon sources 49 12.3. High-purity neutrino beams 50 12.4. Neutron and radioactive ion sources 50 12.5. Production of monoenergetic fast neutrons 51 12.6. Metrology with keV neutrons 51 13. Nuclear physics opportunities at the SPS 51 14. Speculative ideas and open questions 51 14.1. Applying the Gamma Factory ideas at other facilities 51 14.2. Nuclear waste transmutation 52 14.3. Laser polarization of PSI 52 14.4. Quark-gluon plasma with polarized PSI 52 14.5. Ground-state hyperfine-structure transitions in PSI 52 14.6. Detection of gravitational waves 53 15. Conclusions and optimistic outlook 53 Acknowledgments 53 Appendix 54 A. Survey of existing and forthcoming gamma facilities 54

show abstract

Section: Vacuum Birefringencementioning

confidence: 82%

“…Depending on the energy of the photons, the photoelectric effect, Compton effect, and electron-positron pair production are typically employed in these experiments. In addition, in the recent years, Bragg scattering was successfully used for high-precision polarization measurements in the keV energy range [412][413][414].…”

Section: Other Polarimetric Techniquesmentioning

confidence: 99%

Expanding Nuclear Physics Horizons with the Gamma Factory

Budker,

Berengut,

Flambaum

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…To detect vacuum polarization effects, the probing light, in this case the XFEL beam, has to be linearly polarized with a high degree of purity (Schlenvoigt et al, 2016). A specially designed highly optimized channel-cut polarizer and analyzer, each reflecting the beam six times inside the channel, has been shown to suppress residual light polarized in the orthogonal state to more than 11 orders of magnitude (Grabiger et al, 2020;Bernhardt et al, 2020). Such polarization purity is unprecedented for X-ray sources and opens up new opportunities for quantum optics and polarimetric experiments at XFELs.…”

Section: Probing the Vacuum Polarizationmentioning

confidence: 99%

The High Energy Density Scientific Instrument at the European XFEL

Zastrau¹,

Appel²,

Baehtz³

et al. 2021

J Synchrotron Rad

View full text Add to dashboard Cite

The European XFEL delivers up to 27000 intense (>1012 photons) pulses per second, of ultrashort (≤50 fs) and transversely coherent X-ray radiation, at a maximum repetition rate of 4.5 MHz. Its unique X-ray beam parameters enable groundbreaking experiments in matter at extreme conditions at the High Energy Density (HED) scientific instrument. The performance of the HED instrument during its first two years of operation, its scientific remit, as well as ongoing installations towards full operation are presented. Scientific goals of HED include the investigation of extreme states of matter created by intense laser pulses, diamond anvil cells, or pulsed magnets, and ultrafast X-ray methods that allow their diagnosis using self-amplified spontaneous emission between 5 and 25 keV, coupled with X-ray monochromators and optional seeded beam operation. The HED instrument provides two target chambers, X-ray spectrometers for emission and scattering, X-ray detectors, and a timing tool to correct for residual timing jitter between laser and X-ray pulses.

show abstract

“…For X‐rays of

\omega \simeq {\cal O}(10)\,{\rm keV}

the possibility of measuring such tiny ellipticities has been demonstrated experimentally. [ 71–73 ] However, we emphasize that these techniques developed for X‐ray polarimetry can certainly not be used at 400 MeV. In the latter parameter regime rather pair‐production polarimetry may be an option, [ 74,75 ] but the possibility to measure tiny ellipticities such as the one in Equation (20) with this technique remains to be shown.…”

Section: Vacuum Birefringencementioning

confidence: 99%

Vacuum Birefringence at the Gamma Factory

Karbstein

2021

Annalen der Physik

View full text Add to dashboard Cite

The perspectives of studying vacuum birefringence at the Gamma Factory are explored. To this end, the parameter regime which can be reliably analyzed resorting to the leading contribution to the Heisenberg–Euler effective Lagrangian is assessed in detail. It is explicitly shown that—contrary to naive expectations—this approach allows for the accurate theoretical study of quantum vacuum signatures up to fairly large photon energies. The big advantage of this parameter regime is the possibility of studying the phenomenon in experimentally realistic, manifestly inhomogeneous pump and probe field configurations. Thereafter, two specific scenarios giving rise to a vacuum birefringence effect for traversing gamma probe photons are analyzed. In the first scenario the birefringence phenomenon is induced by a quasi‐constant static magnetic field. In the second case it is driven by a counter‐propagating high‐intensity laser field.

show abstract

Ultra-high precision x-ray polarimetry with artificial diamond channel cuts at the beam divergence limit

Cited by 25 publications

References 40 publications

Expanding Nuclear Physics Horizons with the Gamma Factory

Expanding Nuclear Physics Horizons with the Gamma Factory

The High Energy Density Scientific Instrument at the European XFEL

Vacuum Birefringence at the Gamma Factory

Contact Info

Product

Resources

About