Si(Li) Segmented Charged Particle Detectors

Features

• For charged particle measurements in Physics and RMS (air monitoring)
• CANBERRA proprietary techniques, available for more than 5 years
• Wide range of shapes (pixels, strips) and segmentations (straight strips, circular, single or double sided)
• Excellent energy resolution depending on geometries
• Good behaviour at high count rates
• Thickness up to 5 mm
• Minimum pitch 300 µm Crosstalk 1% maximum
• Double sided segmentation capability, using CANBERRA thin window proprietary technology
• Operation at room temperature or with Peltier cooling
• Similar devices operating at cryogenic LN₂ temperature for Xray measurements (see ESLX-S data sheet)

Description

The CANBERRA LTS detectors are manufactured using a proprietary technology allowing design of the best segmented silicon detectors available worldwide.

CANBERRA has applied the photolithography techniques - usually employed in microelectronics- to Si(Li) diodes. Thus, all kinds of segmentation patterns are possible (straight or curved strips, pixels, etc.). This technology has been proven for 5 years.

CANBERRA also offers a proprietary double sided thin window segmentation.

Segmentation offers many advantages:

• Suppression of dead zones between consecutive strips
• Small pitch: down to 300 µm
• Good behaviour at high count rates (up to 1 million pulses per second)
• 2-sided photolithography capability, with pitchs up to 300 µm
• Excellent FWHM resolution
• No measurable crosstalk.

The segmentation techniques fit with all cristal designs: circular, rectangular, etc...

Several LTS detectors may be associated in arrays to increase angular covering or may be stacked, thus off ering better absorption or Compton camera imaging capabilities. LTS detectors are operated at room temperature or are Peltier cooled for better performances.

Applications

• Nuclear Physics
• CAM (Continuous Air Monitoring) on Beta particles.
• Imaging (Compton cameras).