Table 1 Comparison of the performance of CdTe Compton camera and other gamma-ray polarimeters.
From: Demonstration of nuclear gamma-ray polarimetry based on a multi-layer CdTe Compton camera
Detector | Reference | Energy (\(E_{\gamma }\)) | Reaction | Polarization sensitivity (Q) | Figure of merit (F) |
|---|---|---|---|---|---|
CdTe Compton camera | This work | 847 | \(^{56}\)Fe\((p,p'\gamma )\) | 0.35 | \(2.4\times 10^{-6}\) |
CdTe (Single layer, Fine pitch) | Antier et al.30 | 200–300 | Syncrotron radiation | 0.78\(^{a}\) | – |
CdTe (Two layers) | Moita et al.31 | 278 | Syncrotron radiation | 0.13\(^{a}\) | – |
POLALI | Werth et al.15 | 847 | \(^{56}\textrm{Fe}(p,p'\gamma )\) | 0.32 | \(4.0\times 10^{-6}\) |
MINIPOLA | Werth et al.15 | 847 | \(^{56}\textrm{Fe}(p,p'\gamma )\) | 0.07 | \(2.0\times 10^{-7}\) |
Gammasphere | Schmid et al.21 | 847 | \(^{56}\textrm{Fe}(p,p'\gamma )\) | 0.047 | – |
Clover Ge | Kojima et al.24 | 847 | – | 0.229\(^{b}\) | – |
GRETINA | Morse et al.29 | 847 | – | 0.200\(^{c}\) | – |
DAGATA | Alikhani et al.27 | 1173 | \(^{60}\)Co | 0.228 | – |
Clover Ge | Kojima et al.24 | 1173 | \(^{60}\)Co | 0.181 | \(4.7\times 10^{-7}\) |
DAGATA | Alikhani et al.27 | 1332 | \(^{60}\)Co | 0.192 | – |
Clover Ge | Kojima et al.24 | 1332 | \(^{60}\)Co | 0.197 | \(5.5\times 10^{-7}\) |
POLALI | Werth et al.15 | 1368 | \(^{24}\textrm{Mg}(p,p'\gamma )\) | 0.30 | \(1.8\times 10^{-6}\) |
MINIPOLA | Werth et al.15 | 1368 | \(^{24}\textrm{Mg}(p,p'\gamma )\) | 0.05 | \(2.0\times 10^{-8}\) |
Gammasphere | Schmid et al.21 | 1368 | \(^{24}\textrm{Mg}(p,p'\gamma )\) | 0.043 | \(1.7\times 10^{-6}\) |
GRETINA | Morse et al.29 | 1368 | \(^{24}\textrm{Mg}(p,p'\gamma )\) | 0.196 | \(2.0\times 10^{-3}\) |
