From: Andreas Neiser Date: Sat, 27 Apr 2013 06:23:55 +0000 (+0200) Subject: Reformulated calorimeter stuff X-Git-Url: https://jspc29.x-matter.uni-frankfurt.de/git/?a=commitdiff_plain;h=89a150b21f9fb05f27813d54c5d9c007968d05f8;p=conferences.git Reformulated calorimeter stuff --- diff --git a/2013-twepp-neiser-trb3_applications/summary.txt b/2013-twepp-neiser-trb3_applications/summary.txt index d390b64..9baf9bd 100644 --- a/2013-twepp-neiser-trb3_applications/summary.txt +++ b/2013-twepp-neiser-trb3_applications/summary.txt @@ -1,5 +1,5 @@ # Word count by `grep -v '^#' summary.txt | wc -w` -# Currently 496 (maximum allowed: 500) +# Currently 498 (maximum allowed: 500) The 4+1 FPGA board "TRB3" can serve various applications in experimental particle physics and beyond due to its general-purpose @@ -29,9 +29,9 @@ To convert the analog signals from the detector to digital pulses suitable for the TDC, the front-end electronics board PaDiWa was designed using the differential input buffers of an FPGA as discriminators with a PWM generated voltage as a variable threshold. -However, for calorimeters the charge information of the pulse -extracted from time over threshold is usually not sufficient. Thus, -the leading edge measurement can be complemented by a modified Wilkinson +However, the charge information of the pulse extracted from time over +threshold is usually not precise enough for calorimeters. Thus, the +leading edge measurement can be complemented by a modified Wilkinson ADC circuit, which encodes the charge in the width of the digital pulse delivered to the TDC. A proof-of-concept board was successfully tested and a version with an improved dynamic range is currently