1. PULSAR Specifications for RECES and ISOLIST ● Zeroth order start on “exploring” how a PULSAR scheme might look for isolation trigger and RECES ● Philosophy – start simple – add complication if necessary ● Only at the first step above

2. ISOLIST ● List card performs two functions – collect partial sums from the DCAS crates (ISOPick cards) – construct 5 sums from the partial sums corresponding to energy surrounding a cluster (excluding “potential leakage” in adjacent tower)

4. ISOLIST ● Receives partial sums and adds from 6 IsoPicks – PULSAR could simply pass these on (allow the CPU at the end to add them up) ● Receives IsoClique “end of buffer” signal – Pulsar needs to end event/buffer at this point since no more seeds will come for this event

5. RECES ● Current scheme involves request vs phi/buffer from alpha ● 48 32 bit words simplest thing would be to pack them all off to the CPU

6. RECES ● The data from the SMXR->RECES – threshold exceeded for two thresholds for 4 wire sums for two Z ranges per wedge (sums over 4 time buckets) – two bits of buffer ● Fixed size should make packaging and shipping data on simple ● zero suppression not meaningful

7. To Do ● First order strategy - send all the data on ● variable size (number of clusters) makes the IsoList more (probably not too) difficult ● Need to work out in detail – but no obvious reason to worry