Hi all. We're interested in wideband moderate performance spectrometers. Something that can digitize 2 (or 4) polarizations at at ~ 8 to 10 GS/s, and provide ~4K channels, full stokes, with a moderate dump rate (1 GB/sec or less).
We could use 8 ROACH-2/ADC-5GS VEGAS-style spectrometer blades, 2 for each 4 GHz polarization and sideband. (simultaneous upper and lower sidebands are required) Or we could move on to newer ADCs and processing boards, and get the full 4 GHz from each polarization in one go. I think this is preferable, for many reasons. The key here, I think, is the ADCs that may have come to market (or to the casper community) since VEGAS was built. I know Homin Jiang and Jonathan Weintroub's groups are working on wideband ADCs and integration with FPGA boards. So the questions that I am posing are: What ADCs and hardware configuration would you choose for a minimum-effort maximum-effect project to be built and deployed in the near future? What projects could we assist with in getting the next fast ADCs developed and tested? Is this all fodder for the CASPER workshop discussions? John -- You received this message because you are subscribed to the Google Groups "casper@lists.berkeley.edu" group. To unsubscribe from this group and stop receiving emails from it, send an email to casper+unsubscr...@lists.berkeley.edu. To post to this group, send email to casper@lists.berkeley.edu.
