Abstract
A Ratio-to-Digital converter (RDC) is used to determine the position of ionization in a single wire position sensing proportional counter. In the RDC, the digital output is obtained by a TDC utilizing the principle of a linear discharge type ADC. The conversion time as well as the time resolution of this type of ADC is dependent on the frequency of the clock. An idea of a Time Resolution Doubler (TRD) has been conceived by applying a simple logic to the basic idea of a two-phase active TDC system to double the effective operating frequency of a TDC. The final output is obtained by the help of the data processing software. An attempt is made to minimize the problem of differential non-linearity, a factor that limits the practical use of a two-phase active TDC system. A prototype TRD based TDC has been developed for using in the RDC of this laboratory. Utilizing a 100 MHz clock, the TRD acts as an effective 200 MHz TDC and gives the RDC output with a full scale capacity of 8192 channels. The experimentally observed differential non-linearity of the TRD based TDC is comparable to that of a simple TDC.
| Original language | English |
|---|---|
| Title of host publication | IEEE Nuclear Science Symposium & Medical Imaging Conference |
| Publisher | Publ by IEEE |
| Pages | 552-556 |
| Number of pages | 5 |
| Edition | pt 1 |
| ISBN (Print) | 0780314883 |
| Publication status | Published - 1994 |
| Event | Proceedings of the 1993 IEEE Nuclear Science Symposium & Medical Imaging Conference - San Francisco, CA, USA Duration: Oct 30 1993 → Nov 6 1993 |
Other
| Other | Proceedings of the 1993 IEEE Nuclear Science Symposium & Medical Imaging Conference |
|---|---|
| City | San Francisco, CA, USA |
| Period | 10/30/93 → 11/6/93 |
All Science Journal Classification (ASJC) codes
- Engineering(all)