On-line XRF analyser line for process analysis
An innovative 4-element X-ray fluorescence detector including 4-channel digital pulse processor is available from now. The system was developed by LLA for process and scientific applications.
XRFline - X-Ray Fluorescence detection for processes
|Detector Type||Silicon Drift Detector (SDD) from KETEK GmbH|
|X-Ray Tube||High power watercooled|
|Measurement Tracks||Adapted to object size, belt width, …|
|Pixel Size across Belt||≥ 25 mm|
|Pixel Size along Belt||Min. 1/100 * belt velocity (m/s)|
|Process Interface||1 Gigabit Ethernet|
|Power Supply||230 V / 16 A|
|Environmental Operating Temperature Range||+5 °C up to +45 °C|
Publications and Conferences
■ Invited talk Sensor-Based-Sorting conference 2016 in Aachen/Germany
"A newly developed XRF-Sensor with high sensitivity for increased sorting efficiency."
LLA-Cen4 - 4-element X-ray fluorescence detector for scientific applications
LLA-Cen4 - 4-element X-ray fluorescence detector
The detector system LLA-Cen4 consists of 4 single detectors based on state of the art X-ray fluorescence detector technology. The Silicon-Drift-Detectors from KETEK offer high count rates (>1Mcps), an excellent signal to noise ratio, excellent energy resolution (<130 eV) and a wide energy region (0.2 keV to 30 keV).
The 4 detectors are arranged in a circle around the primary beam tilted by 45° so that the axes of the detectors intersect with the axis of the primary beam in one point. The measuring point is located on the primary beam axis and 5 mm in front of the leading edge of the system.
There are 3 options for the LLA-Cen4 available:
■ 28 mm² sensitive area consisting of 4 H07-detectors (4 x 7 mm²)
■ 80 mm² sensitive area consisting of 4 H20-detectors (4 x 20 mm²)
■ 120 mm² sensitive area consisting of 4 H30-detectors (4 x 30 mm²)
The advantages of a 4-channel system over a 1-channel system with comparable sensitive area are:
■ thinner detector windows and therefore higher sensitivity at lower energies
■ better energy resolution (e.g. <129 eV for a 20 mm² and <136 eV for a 80 mm² detector)
■ 4-fold count rate (4 x >1Mcps)
Applications for the LLA-Cen4 are e.g.:
■ ‘On the fly‘ X-Ray Fluorescence-Scans
■ XANES/EXAFS measurements on massive samples or samples with low element concentrations not suitable for absorption measurements.
LLA-DPP4 - 4 channel Digital Pulse Processor
The LLA-DPP4 is a 4-channel Digital Pulse Processor offering high throughput and real-time data at low costs per detector.
With the at LLA developed 4-channel DPP it is possible to collect spectra with measurement times as short as 1 ms and send them via GBit-LAN in real-time to a PC for further processing.
The software allows storing all spectra as they are sent from the DPP or collecting any number of consecutive spectra for measurement times up to hours.
The data in the 2048-channel wide spectra are not treated or in any way corrected.
The DPP is designed for ramped reset type preamplifier signals with a range from -2V to +2V as e.g. for KETEK GmbH SDD´s, for other preamplifier outputs please ask us.
■ 4 channels
■ Front-panel ports TTLin and TTLout providing triggering options
■ Peaking time range: 0.1 to 1.6 microseconds
■ Adjustable flat top and threshold
XRF SCI Softwarepackage
LLA-Cen4 - Setting and control software
LLA provides a software package for setting up detectors and acquisition control.
The basic software is used to set up detector parameters like gain, peaking time, flattop or threshold as well as to monitor parameters like SDD chip temperature.
Also included are options for spectra acquisition control like measurement time and location for file storage and let one choose to store a separate file from each channel or a single file with the sum spectra of all 4 channels. A basic scan mode allows furthermore acquiring and storing a consecutive number of spectra in a single file.
Run control options:
■ Manual triggered from the software
■ Start/stop via TTLin
■ From other software via Ethernet (UDP-packets)