Products | Vitus H20 SDD
30 mm² collimated to 20 mm²
X-Ray Silicon Drift Detectors for
EDX - XRF - TXRF - Applications
KEY PARAMETERS VITUS H20 | ||
| Class | Premium | Standard |
| Energy Resolution | < 133 eV | < 139 eV |
| Peak to Background | > 10000 | > 6000 |
| Peak to Tail | > 2000 | > 1000 |
| Absorption Depth | 450 µm Si | |
| Peak Shift Stability up to 100 kcps | < 1eV | |
| Max. input countrate | 500.000 cps | |
| Windows | 8 µm Be | |
| Cooling Performance | ∆T > 75 K | |
| Collimator Materials | Zr - Pd - Mo | |
REGISTER HERE AND GET THE DETAILED | ||
Short Facts
- low capacitance
- very good energy resolution
- high count rate capability up to 500kcps
- integrated peltier element
- no liquid nitrogen cooling
- low leakage current
- radiation hardness during more than
10 years standard count-rate exposure - "easy to use" - no voltage adjustment
Energy Resolution
to the topThe energy resolution of the VITUS H20 SDD is dependent on the operating temperature and the shaping time. To achieve good results KETEK recomends an operating temperature below -20°C. Typical operating conditions are -35°C and an analogue shaping time of 4 µs.
The temperature dependency is more significant for longer shaping times.
Finding the optimum operating conditions depends very much on ambient temperature and count rate for the specific application.
Count Rates
to the topThe VITUS H20 SDD detector offers a high count rate capability up 500 kcps with weak FWHM dependency as shown in the graph for different analogue shaping times.
The data of the example plot has been acquired with a VITUS H20 Standard Class detector at an operating temperature of -35°C.
The plots show values up to the maximum reasonable dead time of 60%.
Operation
to the top- pin wiring according VITUS Operation Block Diagram
- detector operating voltages should be RC low-pass filtered and linear regulated (KETEK electronics recommended)
- KETEK reset type charge sensitive preamplifier with internal triggered reset pulses recommended
- short wiring length between detector and preamplifier recommended
- detector may only be operated with an appropriate heat sink
| SDD Voltages and Currents | ||
|---|---|---|
| Ring1 (R1) | -20 V ± 5 V | 10 µA typ. |
| RingX (RX) | -130 V ± 20 V | 10 µA typ. |
| Back | -60 V ± 5 V | <1 nA |
| FET | ||
|---|---|---|
| Drain | 3 V ± 0.5 V | 3 mA |
| Source | 0 V | |
| Bulk | -5 V ± 3 V | |
| Reset | 1 V | 1 µs |
| Feedback | ramped output | |
| Peltier Element | 4 V | 1 A max |
|---|---|---|
| Temperature Monitor | slope 2.40 mV/K 520 mV @ +20°C |
1 µA |
Geometries
to the topThe VITUS H20 SDD is encapsulated with a bevelled cap for optimum beam geometries in your application. The used TO8 housing can be easily mounted by the M4 stud.
Versions and Ordering Codes
to the topAvailable versions and ordering codes for Vitus-H20 SDD:
The vacuum type codes end with a 'V' - e.g. 133V
