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Related Manuals for Amptek XR-100CR
Summary of Contents for Amptek XR-100CR
- Page 1 OPERATING MANUAL XR-100CR X-RAY DETECTOR SYSTEM and PX2CR POWER SUPPLY / SHAPER Revision 13 October 2003 AMPTEK Inc. 14 DeAngelo Drive, Bedford, MA 01730-2204 Tele: +1 781 275-2242 Fax: +1 781 275-3470 E-mail: sales@amptek.com www.amptek.com...
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Page 2: Table Of Contents
CAUTION ............................3 SYSTEM SPECIFIC PERFORMANCE ...................5 CONNECTION DIAGRAM: XR-100CR/PX2CR/MCA8000A (Figure 1) .........7 OPERATING NOTES FOR THE XR-100CR CONNECTED TO THE PX2CR ........8 RISE TIME DISCRIMINATION (RTD) IN THE PX2CR AMPLIFIER ..........10 PILEUP REJECTION (PU) IN THE PX2CR AMPLIFIER ..............10 INPUT COUNT RATE (ICR) IN THE PX2CR AMPLIFIER ............11 XR100CR / PX2CR Reset Waveforms ..................12... -
Page 3: Caution
5. BEST PERFORMANCE of the XR-100CR can be achieved by mounting it by one or two of its mounting holes to a metal plate. This will increase the surface area and allow the detector to run 4 to 6 degrees colder. - Page 4 Amptek Inc. XR-100CR Manual This page blank. - 4 -...
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Page 5: System Specific Performance
Amptek Inc. XR-100CR Manual 2 SYSTEM SPECIFIC PERFORMANCE Replace this page with the graph for the specific detector and any other additional system specific information. - 5 -... - Page 6 Amptek Inc. XR-100CR Manual Blank page - 6 -...
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Page 7: Connection Diagram: Xr-100Cr/Px2Cr/Mca8000A (Figure 1)
Amptek Inc. XR-100CR Manual 3 CONNECTION DIAGRAM: XR-100CR/PX2CR/MCA8000A (Figure 1) - 7 -... -
Page 8: Operating Notes For The Xr-100Cr Connected To The Px2Cr
Turn the power to the PX2CR OFF. Connect the 9-Pin D-Connector from the XR-100CR to the PX2CR. Connect the Output of the XR-100CR (OUT) directly to the Input of the PX2CR (AMP IN) with a BNC cable. DO NOT terminate the cable with a 50 termination. - Page 9 ON to the PX2CR, wait a few seconds and start taking data. The XR-100CR can be stimulated by either an X-Ray source or through the TEST input connector. A positive (100 ns rise, 1 ms fall) test pulse of 20 mV will produce an output from the XR-100CR roughly equivalent to a 20 keV X-Ray.
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Page 10: Rise Time Discrimination (Rtd) In The Px2Cr Amplifier
PX2CR (bottom trace in plot) also combines the gate-off pulse to the MCA due to the reset preamplifier (see next page). When using the AMPTEK MCA8000 or MCA8000A Multichannel Analyzer, the PU Gate from the PX2CR should be connected to GATE 1 of the MCA. -
Page 11: Input Count Rate (Icr) In The Px2Cr Amplifier
PX2CR amplifier. This pulse is produced from a fast low level discriminator which is set just above the noise threshold of the XR-100CR preamplifier. The ICR pulse is a positive TTL type with maximum duration of 2 µs. DO NOT terminate this signal with 50 . -
Page 12: Xr100Cr / Px2Cr Reset Waveforms
Amptek Inc. XR-100CR Manual 8 XR100CR / PX2CR Reset Waveforms 1. Typical waveform at the output of the XR-100CR 2. Reset pulse at the output of the XR-100CR 3. Reset pulse at the output of the PX2CR. Use PU GATE to gate-off the MCA (GATE 1 for... -
Page 13: Xr-100Cr / Px2Cr Troubleshooting
FIELDS. 1. Remove all X-Ray sources. Turn RTD OFF. 2. Connect the XR-100CR output to the PX2CR input. Connect the PX2CR output to a high impedance input (NOT THROUGH 50 ) of an oscilloscope. Look for periodic noise pick-up on the scope by changing the time-base dial on the scope back and forth. -
Page 14: Xr-100Cr Connection Diagram Without Px2Cr (Figure 2)
Amptek Inc. XR-100CR Manual 10 XR-100CR CONNECTION DIAGRAM WITHOUT PX2CR (Figure 2) - 14 -... -
Page 15: Operating Notes For The Xr-100Cr Without The Px2Cr
Shaping amplifier such as NIM standard Shaping Amplifier with an input impedance of 1 k . A "triangular" type of pulse with 12 µs shaping time and base line restoration will be needed to realize the resolution of the XR-100CR. Example: Canberra Model 2025 or 2026. Oscilloscope A low energy radioactive x-ray source or tail pulse generator. - Page 16 9. If a pulse generator is to be used, connect the OUTPUT of the pulse generator to the BNC TEST input of the XR-100CR. Set the test pulse generator to produce a 20 mV peak signal at a frequency of about 1 kHz. The rise time of the signal should be about 100 ns and the pulse width should be for about 1 ms.
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Page 17: Procedure To Lower The High Voltage Bias In The Detector
10 volts. Turn the R5 screw counter-clockwise to set the voltage to +90 Volts. Plug in the XR-100CR. Each time R5 is turned by 1/2 turn check to see if the detector is restored to normal. High voltage to the detector can be decreased by more than 10 volts as long as the resolution of the detector is acceptable. -
Page 18: Warranty
+130 to +150 Volts. 13 WARRANTY AMPTEK, INC. warrants to the original purchaser this instrument to be free from defects in materials and workmanship for a period of one year from shipment. AMPTEK, INC. will, without charge, repair or replace (at its option) a defective instrument upon return to the factory. This warranty does not apply in the event of misuse or abuse of the instrument or unauthorized alterations or repair. -
Page 19: Internal Connections Between Axrcr / Xr-100Cr / Px2Cr
Amptek Inc. XR-100CR Manual 14 INTERNAL CONNECTIONS BETWEEN AXRCR / XR-100CR / PX2CR XR-100CR PX2CR AXRCR LEMO 9 PIN D AD590 CONN. CONN. TEMPERATURE TEMP SENSOR THERMAL SW. COOLER+ THERMO- ELECTRIC COOLER- COOLER FILTER BIAS X-RAYS DETECTOR +9 VDC FEEDBACK... -
Page 20: Px2Cr Front And Back Panels
Amptek Inc. XR-100CR Manual 15 PX2CR FRONT AND BACK PANELS MODEL PX2T/CR POWER SUPPLY & AMPLIFIER FOR THE XR-100T/CR Si DETECTOR GAIN XR100T/CR TEMP POWER MONITOR AMP OUT AMP IN PX2T/CR Front Panel PU GATE MODEL# PX2T-CR SERIAL # 000 AMPTEK INC. -
Page 21: Xr-100Cr Efficiency Curves
Amptek Inc. XR-100CR Manual XR-100CR EFFICIENCY CURVES The figure on the left (linear scale) shows the intrinsic full energy detection efficiency for the XR-100CR detectors. This efficiency corresponds to the probability that an X- ray will enter the front of... -
Page 22: Application Notes
Fe, the ratio of the counts at the 5.9 keV peak to the counts at about 2 keV is called the “Peak to Background Ratio” (P/B). The XR-100CR with a 7 mm uncollimated detector exhibits a P/B = 260. However, the same detector with an external Aluminum collimator having a 2 mm diameter hole has a P/B = 3150. -
Page 23: Detector Edge Effects (25 Mm And 5 Mm , 500 M Thick)
Although a small effect, in order to eliminate the secondary peak, an internal silver (Ag) collimator is now used on all 25 / 5 mm detectors. An external collimator is always possible and on special order Amptek can incorporate other materials for specific applications. - 23 -... -
Page 24: Ray Fluorescence (Xrf) - A Description
Energy (keV) Spectra taken using Amptek XR-100CR 25mm x 500 m X-Ray Detector and Amptek MCA8000A Multichannel Analyzer. The characteristic x-rays are labeled as K, L, M or N to denote the shells they originated from. Another designation alpha ( ), beta ( ) or gamma ( ) is made to mark the x-rays that originated from the transitions of electrons from higher shells. - Page 25 Amptek Inc. XR-100CR Manual X-Ray Fluorescence Process Example: Titanium Atom (Ti = 22) 1) An electron in the K shell is ejected from the atom by an external primary excitation x-ray, creating a vacancy. 3) When a vacancy is created in the L shell...
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Page 26: Xr-100Cr-Ex1.5 Mechanical Dimensions
Amptek Inc. XR-100CR Manual XR-100CR-EX1.5 MECHANICAL DIMENSIONS KEY TAB DETECTOR ORIENTATION NOTE KEY TAB All Dimensions Are In Inches Except As Noted - 26 -... -
Page 27: Xr-100Cr Selection Chart (As Of 7/08)
Amptek Inc. XR-100CR Manual XR-100CR SELECTION CHART (as of July 2008) - 27 -... -
Page 28: Amptek K And L Emission Line Lookup Chart
Amptek Inc. XR-100CR Manual AMPTEK K AND L EMISSION LINE LOOKUP CHART - 28 -... -
Page 29: Px2Cr Power Supply Schematic For Xr-100Cr (Figure 3)
Amptek Inc. XR-100CR Manual PX2CR POWER SUPPLY SCHEMATIC FOR XR-100CR (Figure 3) 9-PIN "D" TO XR100T, CZT, OR CR CONNECTOR FP230-10 499K PIN 5 10UF HIGH VOLTAGE BR86D POWER 1N4135 100V 10NF 10NF 10NF 10NF 1N4135 100V PIN 9 ENCLOSED COMPONENTS... -
Page 30: Px2Cr Shaper Schematic
Amptek Inc. XR-100CR Manual PX2CR SHAPER SCHEMATIC C41A OPEN DO NOT INSTALL 1NF, NPO 1NF, NPO 1NF, NPO R77 AND C41A 0.22UF OPEN U41A AD844 OP467 U41D 4.87K 4.87K U41C OP467 4.7NF,NPO 3.57K 3.57K OP467 HEADER 2 6.98K 6.98K 1.74K...
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