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德國ketek是世界上zui早生產硅漂移探測器的公司產品具備高能量分辨、高計數率、高穩定性、兼容性強、操作簡便等優點，多次隨美國火星探測器登陸火星，為人類獲得了許多火星上物質主要成分的*手資料。目前仍有7年前發射到火星的ketek探測器可以正常工作。
VIRUS系列產品性能參數
| VITUS Silicon Drift Detectors | |||||||||
| Premium Class | Standard Class | ||||||||
| Type | Active Area （mm²） | Window | Cooling Performance Max ? T @ 30°C heat sink | Guaranteed FWHM @ 8µs PT [eV] | Guaranteed P/B | Typ. FWHM @ 100kcps dead time <50% [eV] | Guaranteed FWHM @ 8µs PT [eV] | Guaranteed P/B | Typ. FWHM @ 100kcps dead time <50% [eV] |
| H7 | 7 | 8µm Be | 75 | ≤ 133 | > 15,000 | ≤ 139 | ≤ 149 | > 6,000 | ≤ 149 |
| H20 | 20 | 8µm Be | 75 | ≤ 133 | > 15,000 | ≤ 139 | ≤ 149 | > 6,000 | ≤ 149 |
| H30 | 30 | 8µm Be | 75 | ≤ 133 | > 15,000 | ≤ 139 | ≤ 149 | > 6,000 | ≤ 149 |
| H50 | 50 | 12.5µm Be | 75 | ≤ 133 | > 15,000 | ≤ 139 | ≤ 149 | > 6,000 | ≤ 149 |
| H80 | 80 | 25µm Be | 75 | ≤ 136 | > 10,000 | ≤ 144 | ≤ 160 | > 5,000 | ≤ 180 |
| R100 | 92 | 25µm Be | 75 | ≤ 136 | > 400 | ≤ 144 | ≤ 160 | > 400 | ≤ 180 |
| VITUS Silicon Drift Detectors with low-energy window | |||||||||
| Premium Class | Standard Class | ||||||||
| Type | Active Area （mm²） | Window | Cooling Performance Max ? T @ 20°C heat sink | Guaranteed FWHM @ 8µs PT [eV] | Guaranteed P/B | Typ. FWHM @ 100kcps dead time <50% [eV] | Guaranteed FWHM @ 8µs PT [eV] | Guaranteed P/B | Typ. FWHM @ 100kcps dead time <50% [eV] |
| H7LE | 7 | AP3.3 low-energy window | 55 | ≤ 133 | > 10,000 | ≤ 139 | ≤ 139 | > 6,000 | ≤ 144 |
| H15LE | 15 | AP3.3 low-energy window | 55 | ≤ 136 | > 10,000 | ≤ 139 | ≤ 144 | > 6,000 | ≤ 144 |
