This title appears in the Scientific Report :
2001
Please use the identifier:
http://dx.doi.org/10.1109/23.940111 in citations.
Pulse recording by free-running sampling
Pulse recording by free-running sampling
Pulses from a position-sensitive photomultiplier (PS-PMT) are recorded by free-running ADCs at a sampling rate of 40 MHz. A four-channel acquisition board has been developed which is equipped with four 12-bit ADCs connected to one field programmable gate array (FPGA). The FPGA manages data acquisiti...
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Personal Name(s): | Streun, M. |
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Brandenburg, G. / Larue, H. / Zimmermann, E. / Ziemons, K. / Halling, H. | |
Contributing Institute: |
Zentralinstitut für Elektronik; ZEL |
Published in: | IEEE transactions on nuclear science, 48 (2001) S. 542 |
Imprint: |
New York, NY
IEEE
2001
|
Physical Description: |
542 |
DOI: |
10.1109/23.940111 |
Document Type: |
Journal Article |
Research Program: |
Detektoren, Signal- und Bildverarbeitung für Neutronen-, Gamma- und Röntgenstrahlung |
Series Title: |
IEEE Transactions on Nuclear Science
48 |
Subject (ZB): | |
Publikationsportal JuSER |
Pulses from a position-sensitive photomultiplier (PS-PMT) are recorded by free-running ADCs at a sampling rate of 40 MHz. A four-channel acquisition board has been developed which is equipped with four 12-bit ADCs connected to one field programmable gate array (FPGA). The FPGA manages data acquisition and the transfer to the host computer. It can also work as a digital trigger, so a separate hardware trigger can be omitted. The method of free-running sampling provides a maximum of information, besides the pulse charge and amplitude also pulse shape and starting time are contained in the sampled data. This information is crucial for many tasks such as distinguishing between different scintillator materials, determination of radiation type, pile-up recovery, coincidence detection or time-of-flight applications. The absence of an analog integrator allows very high count rates to be dealt with. Since this method is to be employed in positron emission tomography (PET), the position of an event is also important. The simultaneous readout of four channels allows localization by means of center-of-gravity weighting. First results from a test setup with LSO scintillators coupled to the PS-PMT are presented here. |