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Summary of Contents for PicoQuant PMA Hybrid Series
- Page 1 PMA Hybrid Series Cooled Hybrid-Photomultiplier Assembly User Manual Document version 2.2...
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Page 3: Table Of Contents
PicoQuant GmbH PMA Hybrid Series Manual Table of Contents 1. Brief Description............................2 2. Operation..............................3 2.1. Handling Photomultiplier Tubes......................3 2.2. Mounting the PMA Hybrid Unit......................4 2.3. Electrical Connections (Rear Side)....................6 2.4. Connecting the detector........................7 2.5. Cooling.............................. 8 2.6. -
Page 4: Brief Description
Overload protection, high voltage setup and temperature regulation are calibrated at PicoQuant and do not require any adjustment. The detector is prepared for PicoQuant sys - tem integration via CAN interface. -
Page 5: Operation
PicoQuant GmbH PMA Hybrid Series Manual 2. Operation 2.1. Handling Photomultiplier Tubes The PMA Hybrid is an extremely sensitive device. It can be permanently damaged by over-exposure to intense light, despite of the built-in overload protection (see also section 5.1). -
Page 6: Mounting The Pma Hybrid Unit
PicoQuant GmbH PMA Hybrid Series Manual 2.2. Mounting the PMA Hybrid Unit (a) Front mounting options 44.45 mm (=1¾") 1 – Four mounting holes (3.2 mm diameter suited for M3 screws). Use these holes to attach, for example, an adapter plate. Access the holes rom the side of the detector. - Page 7 PicoQuant GmbH PMA Hybrid Series Manual (b) Bottom mounting options: Four threads (M3x6) at the bottom of the detector fix the detector housing to the detector base plate. These screws can be replaced in order to mount the detector on a custom designed base plate. Remove the exist- ing screws and replace by screws long enough to hold base plate and housing.
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Page 8: Electrical Connections (Rear Side)
2 – Analog output signal (SMA female, designed for > 1k Ohm impedance). 3 – CAN interface for communication with PicoQuant equipment only. 4 – Shutter interlock (4-pin LEMO EGG.00.304.CLL, female connector). To close the shutter shunt pins 2 and 3 using a suited adapter. -
Page 9: Connecting The Detector
PicoQuant GmbH PMA Hybrid Series Manual 2.4. Connecting the detector 1 – Connect a suited SMA signal cable (ideally double shielded RG233/U coaxial cable) to the Output con- nector or the Analog connector of the detector. 2 – Connect the other end of the SMA signal cable to your data acquisition electronics (such as the TCSPC modules TimeHarp 260, PicoHarp 300 or HydraHarp 400 for timing measurements via the Output connector). -
Page 10: Cooling
PicoQuant GmbH PMA Hybrid Series Manual 2.5. Cooling When the PMA Hybrid is switched on, the thermoelectric cooling is activated and both the Power status LED and the Temp status LED are green. If no problems are detected during the start-up procedure both LED switch off after two seconds to avoid stray light during measurements. -
Page 11: Overload Protection
PicoQuant GmbH PMA Hybrid Series Manual 2.6. Overload Protection In order to avoid permanent damage to the PMA Hybrid, a fully automatic circuitry closes the shutter in front of the detector when the detector count rate reaches a critical level. This happens at a photon flux of 80 mil- lion photons per second (see also section 2.7 and 5.1). -
Page 12: Overload Shutdown Count Rate
PicoQuant GmbH PMA Hybrid Series Manual 2.7. Overload Shutdown Count Rate The overload shutdown rate is determined by measuring the current flow through the detector. In case the current has reached a critical limit, a fully automatic circuitry closes the shutter in front of the detector. This happens at a photon flux of approx. -
Page 13: Led Color Code
PicoQuant GmbH PMA Hybrid Series Manual 2.9. LED color code The following tables describe the color code of Status and Temp LEDs Status LED: Color Cause Action overload reduce light intensity on the detector, see section 2.6 and 2.7 green... -
Page 14: Typical Performance
3.1. Temporal Response The PMA Hybrid series units are suited for time-resolved applications such as time-correlated single-photon counting (TCSPC) measurements. A typical electrical response of a PMA Hybrid unit to a single photon impact is shown on the graph below: The output signal is a short, negative going voltage pulse with an amplitude of approximately -200 mV into 50 Ohms. - Page 15 PicoQuant GmbH PMA Hybrid Series Manual Example: IRF measurement using a PMA Hybrid 40 This IRF has been recorded on a FluoTime 300 spectrometer equipped with PMA Hybrid 40 detector and PicoHarp 300 TCSPC module. The sample was a strongly diluted Ludox scattering solution irradiated with 375 nm light pulses of approximately 70 ps optical duration from an LDH-P-C-375 picosecond pulsed laser diode.
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Page 16: Spectral Response
PicoQuant GmbH PMA Hybrid Series Manual 3.2. Spectral Response The spectral sensitivity of a detector based on PMA Hybrid is mainly determined by the photo-cathode mate- rial. Page 14... -
Page 17: Technical Data / Specifications
PicoQuant GmbH PMA Hybrid Series Manual 4. Technical Data / Specifications Electrical Parameters Model -40mod Wavelength 220 nm - 220 nm - 300 nm - 300 nm - 300 nm - 380 nm - range 650 nm 850 nm 720 nm... - Page 18 PicoQuant GmbH PMA Hybrid Series Manual Shutter Connection 4-pin LEMO EGG.00.304.HLN, female connector, possible matching plug: LEMO FGG.00.304.CLAD35Z In order to close the shutter shunt pins 2 and 3. Power Pin Connection 2-pin LEMO EXG.0B.302.CLL, female connector, possible matching plug: LEMO FGG.0B.302.CLAD52...
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Page 19: Support
PicoQuant GmbH PMA Hybrid Series Manual 5. Support The PMA Hybrid Series detectors have gone through testing at PicoQuant. It is stable and reliable. Neverthe - less, we continually make improvements that will be incorporated into future versions. 5.1. Returning Products for Repair If you have serious problems that require the device to be sent in for inspection / repair, please contact us at: support@picoquant.com... -
Page 20: Legal Terms
PMA Hybrid Series Manual 6. Legal Terms 6.1. Copyright Copyright of this manual and on-line documentation belongs to PicoQuant GmbH. No parts of it may be reproduced, translated or transferred to third parties without written permission of PicoQuant 6.2. Trademarks Other products and corporate names appearing in this manual may or may not be registered trademarks or subject to copyrights of their respective owners. -
Page 21: Further Reading
7.1. PicoQuant Bibliography PicoQuant maintains a database of publications mentioning PicoQuant devices. It can be found at our web- site http://www.picoquant.com/scientific/references. It is a valuable source if you would like to know which lab- oratories are using PicoQuant products or how broad the field of various applications is. - Page 22 PicoQuant GmbH PMA Hybrid Series Manual All information given here is reliable to our best knowledge. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications and external appearances are subject to change without notice. PicoQuant GmbH P +49-(0)30-1208820-0...
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