Commissioning of a Si(Li) Compton polarimeter with improved energy resolution

Vockert, M.; Weber, G.; Spillmann, U.; Krings, T.; Herdrich, Marc Oliver; Stöhlker, Th.

doi:10.1016/j.nimb.2017.05.035

Cited by 6 publications

(8 citation statements)

References 18 publications

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“…Values of the reduced chi-squared χ 2 red (red circles) and reconstructed linear polarization (black circles) for multiple simulated data sets with different statistical uncertainties. In addition, points in the plot are displayed for comparison with experimental data points (filled dots), taken from the commissioning experiment at ESR [13].…”

Section: Systematic Deviation Of Detector Response Function and Modelmentioning

confidence: 99%

“…[12]. Within the SPARC collaboration several double-sided segmented X-ray detectors were constructed as dedicated Compton polarimeters [10,11,13]. They provide good detection efficiency, energy and time resolution together with millimeter to submillimeter two-dimensional position resolution and a large detection area.…”

Section: Introductionmentioning

confidence: 99%

“…b) MC simulation of Compton scattering of a 100 % polarized photon beam impinging on the detector crystal. c) Azimuthal scattering distribution for highly polarized K-REC photons generated at the ESR storage ring [13] (black dots) plotted together with the model curve (red line) shown in Eq. 2, being adjusted to the experimental data.…”

Section: Introductionmentioning

confidence: 99%

“…2, being adjusted to the experimental data. resolution compared to polarimeters developed previously, see [13] for details. The Monte Carlo-(MC-)simulated scattering distribution of a 100 % polarized beam impinging on the detector crystal is illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

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Polarization reconstruction algorithm for a Compton polarimeter

Vockert

Weber

Spillmann

et al. 2018

J. Phys.: Conf. Ser.

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Abstract. We present the technique of Compton polarimetry using X-ray detectors based on double-sided segmented semiconductor crystals that were developed within the SPARC collaboration. In addition, we discuss the polarization reconstruction algorithm with particular emphasis on systematic deviations between the observed detector response and our model function for the Compton scattering distribution inside the detector.

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Section: Systematic Deviation Of Detector Response Function and Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Polarization reconstruction algorithm for a Compton polarimeter

Vockert

Weber

Spillmann

et al. 2018

J. Phys.: Conf. Ser.

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“…In the present work we employ dedicated Compton polarimeters [36,37] developed by the SPARC Collaboration to provide REC (linear) polarization data with significantly increased precision compared to the previous study [23]. This enables a test of state-of-the-art, fully relativistic theory complementary to studies of the photon angular distribution.…”

Section: Introductionmentioning

confidence: 99%

Radiative electron capture as a tunable source of highly linearly polarized x rays

Vockert¹,

Weber²,

Bräuning³

et al. 2019

Phys. Rev. A

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The radiative electron capture (REC) into the K shell of bare Xe ions colliding with a hydrogen gas target has been investigated. In this study, the degree of linear polarization of the K-REC radiation was measured and compared with rigorous relativistic calculations as well as with the previous results recorded for U 92+ . Owing to the improved detector technology, a significant gain in precision of the present polarization measurement is achieved compared to the previously published results. The obtained data confirms that for medium-Z ions such as Xe, the REC process is a source of highly polarized x rays which can easily be tuned with respect to the degree of linear polarization and the photon energy. We argue, in particular, that for relatively low energies the photons emitted under large angles are almost fully linear polarized.

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Possible Polarization Measurements in Elastic Scattering at the Gamma Factory Utilizing a 2D Sensitive Strip Detector as Dedicated Compton Polarimeter

et al. 2021

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For photon energies from several 10 keV up to a few MeV Compton polarimetry is an indispensable tool to gain insight into subtle details of fundamental atomic radiative processes. Within the SPARC collaboration several segmented semiconductor detectors are developed that are well suited for application as efficient Compton polarimeters. In this report, these recent developments are reviewed and it is discussed how Compton polarimetry can be employed at the upcoming Gamma Factory.

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Commissioning of a Si(Li) Compton polarimeter with improved energy resolution

Cited by 6 publications

References 18 publications

Polarization reconstruction algorithm for a Compton polarimeter

Polarization reconstruction algorithm for a Compton polarimeter

Radiative electron capture as a tunable source of highly linearly polarized x rays

Possible Polarization Measurements in Elastic Scattering at the Gamma Factory Utilizing a 2D Sensitive Strip Detector as Dedicated Compton Polarimeter

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