Session Number
R910
Advisor(s)
Jin-Yuan Wu, Fermi National Accelerator Laboratory
Location
B-206 Lecture Hall
Start Date
28-4-2016 11:05 AM
End Date
28-4-2016 11:30 AM
Abstract
The purpose of this investigation is to discover critical experimental factors that could lead to the variation of time measurement by a time-to-digital converter (TDC) implemented on field-programmablegate- array (FPGA). Two pulses were generated by a pulse generator, and the second pulse was given a 20 nanoseconds delay. In an ideal experiment, the mean of the entry data would have been 20 nanoseconds since the two channels (8,c) obtained pulses that were given the same delay. However, due to device errors and quantization errors, which is produced during analog-to-digital conversion, time difference between hits varied from 22.1 to 22.7 nanoseconds. The top test results have shown that the time measurement better than 80 picoseconds was obtained for more than ten tests. FPGA can be used as a base gadget to improve TDC resolution, and although still at the state of development, this particular application will continue to develop and ultimately improve resolutions of Positron Emission Tomography scanners (PET scanner) and future medical imaging.
Field-Programmable-Gate-Array Implemented on Time-to-Digital Converter: Improving its Resolution
B-206 Lecture Hall
The purpose of this investigation is to discover critical experimental factors that could lead to the variation of time measurement by a time-to-digital converter (TDC) implemented on field-programmablegate- array (FPGA). Two pulses were generated by a pulse generator, and the second pulse was given a 20 nanoseconds delay. In an ideal experiment, the mean of the entry data would have been 20 nanoseconds since the two channels (8,c) obtained pulses that were given the same delay. However, due to device errors and quantization errors, which is produced during analog-to-digital conversion, time difference between hits varied from 22.1 to 22.7 nanoseconds. The top test results have shown that the time measurement better than 80 picoseconds was obtained for more than ten tests. FPGA can be used as a base gadget to improve TDC resolution, and although still at the state of development, this particular application will continue to develop and ultimately improve resolutions of Positron Emission Tomography scanners (PET scanner) and future medical imaging.