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Summary of Contents for PicoQuant PMA Series
- Page 1 PMA Series Photomultiplier Detector Assembly User Manual Version 2.0...
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Page 2: Table Of Contents
PicoQuant GmbH PMA Series Table of Contents 1. Brief Description ............... 2 2. Operation ................. 3 Handling Photomultiplier Tubes ........3 PMA-M model ..............4 2.2.1 Mounting..............4 2.2.2 Electrical connections..........5 Cooled PMA-C model ............ 6 2.3.1 Mounting..............8 2.3.2 Electrical connections..........9 2.3.3 Cooling ............... -
Page 3: Brief Description
The PMA integrates a fast Photomultiplier Tube (PMT), a high voltage power supply and a pre-amplifier. The PMA Series are built in a gold plated iron or nickel coated aluminum housing to achieve high level of RF and magnetic shielding and protection against the interference with other devices. -
Page 4: Operation
PicoQuant GmbH PMA Series 2. Operation 2.1 Handling Photomultiplier Tubes The Photomultiplier Tube (PMT) inside the PMA detector is an extremely sensitive device. It can be permanently damaged by over-exposure to intense light, despite of the built-in overload protection. Never open or disassemble the PMA detector housing when the power supply unit is connected. -
Page 5: Pma-M Model
PicoQuant GmbH PMA Series 2.2 Handling of uncooled PMA-M models 2.2.1 Mounting The PMA-M is delivered with a black plastic cover to protect the sensor. This cover must be removed before mounting the detector by loosening the 4 srews on the front side. - Page 6 PicoQuant GmbH PMA Series Inside view of housing front part:...
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Page 7: Electrical Connections
2 - Power supply (5-pole Binder 711 type male connector). This is for +12 V DC power adapter which is delivered with the PMA-M. Alternatively, the appropriate cable that is available at PicoQuant spectrometer systems or LSM Upgrade Kits is connected here. -
Page 8: Cooled Pma-C Model
PicoQuant GmbH PMA Series 2.3 Handling and mounting the cooled PMA-C model 2.3.1 Mounting 1 - Four mounting holes with M4 thread. Use these holes to attach, for example, an adapter plate. 2 - C-mount thread, 1-32 UN. Note that you still have to support the weight of the detector when this mounting style is used. - Page 9 PicoQuant GmbH PMA Series this special case open the housing by releasing four long M4 screws at the rear panel. Use four pieces of M3 (beware, not M4!) or UNC 4-40 sized screws to fix the front panel to the other device. Then carefully close the housing, make sure that cables are not crimped.
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Page 10: Electrical Connections
2 - Power supply (5-pole Binder 711 type male connector). This is for +12 V DC power adapter which is delivered with the PMA-C. Alternatively, the appropriate cable that is available at PicoQuant spectrometer systems or LSM Upgrade Kits is connected here. -
Page 11: Cooling
PicoQuant GmbH PMA Series 2.3.3 Cooling Cooling status Cooling ON/OFF button Cooling is started by pressing the black button at the rear panel of the PMA-C. When the thermoelectric cooling is activated, the blue LED indicator is shining and the fan rotates at increased speed. -
Page 12: Overload Protection
PicoQuant GmbH PMA Series 2.3.4 Overload protection PMA-C model (rear side) Overload indicator Overload reset button In order to avoid permanent damage to the PMT, a fully automatic circuitry closes the shutter in front of the detector when the anode current becomes too high. -
Page 13: Setting Up Pma Detectors
PicoQuant GmbH PMA Series 3. Setting up PMA Detectors 1. Mount the detector to your experimental setup. 2. When the PMA is being used for the first time, it is advisable to place several high-valued neutral density filters directly in front of the PMT in order to protect it from bright emissions. -
Page 14: Usage Of Uncooled Pma Detectors (Oem Version)
PicoQuant GmbH PMA Series 4. Usage of uncooled PMA Detectors (OEM Version) Standard PMA Cable Connections 1. Output signal from PMA (SMA socket) 2. +12 V DC input 3. Ground (0 V) 4. No connection (test point) 1. In a dimly lit room, remove the protective light shield and mount the PMA in front of the sample to be monitored. -
Page 15: Typical Performance
PMA Series 5. Typical performance 5.1 Temporal response The PMA series units are suitable for time-resolved applications such as time-correlated single-photon counting (TCSPC) measurements. A typical electrical response of a PMA detector to a single photon impact is shown on... - Page 16 PicoQuant GmbH PMA Series With a well designed TCSPC setup an instrument response function (IRF) shorter than 200 ps FWHM can be achieved, as shown in the graphs below. 10000 10000 1000 8000 6000 Time [ns] FWHM 180 ps 4000...
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Page 17: Spectral Response
PMA Series 5.2 Spectral response The spectral sensitivity of a detector based on photomultiplier tube (PMT) is mainly determined by the photo-cathode material. Three different cathode versions are available for the PMA series with the following spectral sensitivities: 0.01 Wavelength [nm]... - Page 18 PicoQuant GmbH PMA Series divided by the incident photon power (typical units: mA / W). For photon counting applications, the QE(λ) is more relevant. There is a simple relationship between these two figures: QE = ⋅S e h, Planck constant; c, speed of light in vacuum; e, electron charge,...
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Page 19: Technical Data
PicoQuant GmbH PMA Series 6. Technical Data 6.1 Specifications Electrical Parameters Model.......PMA 175...PMA 182...PMA 192 Wavelength range....185 – 700 nm..300 – 820 nm..300 – 900 nm Dark count* (uncooled)..< 50 cps....< 900 cps..< 10000 cps** Dark count* (cooled)..----.....< 200 cps..< 3000 cps** * typ. -
Page 20: Mechanical Layout
PicoQuant GmbH PMA Series 6.2 Mechanical layout PMA-M... - Page 21 PicoQuant GmbH PMA Series PMA-C...
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Page 22: Support
In any case, we would like to offer you our complete support. Please do not hesitate to contact PicoQuant if you would like assistance with your system. If you observe any errors, please e-mail a detailed description of the problem and relevant circumstances, to info@picoquant.com Your feedback will... - Page 23 Specifications and external appearance are subject to change without notice. All trademarks used in this manual are the property of their respective owners. PicoQuant claims no rights to any such trademarks. They are used here only for identification or...
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