A prototype study of the POLAR front-end electronics

Sun, Jiulin; Wu, Bobing; Yongjie, Zhang; Lu, Y.; Li, Yanguo; Dong, Yongwei; Li, Lü; Chai, Jun; Zhang, Yifei; Kang, Shi-xiu; Song, Liming

doi:10.1016/j.nima.2011.07.053

Cited by 3 publications

(2 citation statements)

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“…This contains further contributions from stray photons in the optical pad and spreading of photons between PS bars. Additional tests showed that the electric crosstalk in the module readout system is negligible [15]. As the overall electrical crosstalk is very small compared to the optical one, we only consider the later.…”

Section: Crosstalk and Response Non-uniformity Modelingmentioning

confidence: 99%

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A crosstalk and non-uniformity correction method for the space-borne Compton polarimeter POLAR

Xiao¹,

Hajdas²,

et al. 2016

Astroparticle Physics

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In spite of extensive observations and numerous theoretical studies in the past decades several key questions related with Gamma-Ray Bursts (GRB) emission mechanisms are still to be answered. Precise detection of the GRB polarization carried out by dedicated instruments can provide new data and be an ultimate tool to unveil their real nature. A novel space-borne Compton polarimeter POLAR onboard the Chinese space station TG2 is designed to measure linear polarization of gamma-rays arriving from GRB prompt emissions. POLAR uses plastics scintillator bars (PS) as gamma-ray detectors and multi-anode photomultipliers (MAPMTs) for readout of the scintillation light. Inherent properties of such detection systems are crosstalk and nonuniformity. The crosstalk smears recorded energy over multiple channels making both non-uniformity corrections and energy calibration more diffi- * Corresponding author.

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Section: Crosstalk and Response Non-uniformity Modelingmentioning

confidence: 99%

“…From Eqs. (8), (9), (12) and (15) we find that the response matrix R can be calculated from these two matrices using the equation:…”

Section: Determination Of Response Matrixmentioning

confidence: 99%