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Table 1
Comparison of SPI-ACS to other GRB detectors.
| Suzaku/HXD-II WAM | CGRO/BATSE LAD | BeppoSAX/PDS GRBM | INTEGRAL/SPI-ACS | Fermi/GBM | |
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| Crystal | BGO | NaI(T1) | CsI(Na) | BGO | BGO |
| Energy range (keV) | 50–5000 | 20–2000 | 40–700 | >75 | 150–30 000 |
| Effective area (cm2) | 800@100 keV | 2000@100 keV | 700@200 keV | 3000@100keV | 120@200 keV |
| 400@1 MeV | 150@1 MeV | 100@1 MeV | ≲8000@1MeV | 120@1MeV | |
| Time resolution | 31.25 ms | 2 ms | 7.8 ms | 50 ms | 5 μs |
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