1. HPS Trigger Update Nathan Baltzell Valery Kubarovsky Kyle McCarty Ben Raydo Bradley Yale Sebouh Paul February 24, 2016 HPS Meeting

2. Trigger Data 02/21/16 RunTrigger VersionCurrent nAEventsEvents Analyzed 7487V520050M600K 7486V523040M1M 7490V525040M1M 7488V620040M250K 7494V623040M550K 7492V625040M1M

3. Trigger Mya

4. ParameterV4V5V6 Seed GTP 100 Elow 200 150 Ehigh 15001400 Nhits 222 Esum low 400800600 Esum high 2000 1900 Edifference 1100 Complanarity 40 Energy slope 400800600 Rate @200 nA 24 kHz22 kHz live time 93% 18 kHz live time 93% Rate @230 nA 27 kHz live time 87% 22 kHz live time 90% Rate @250nA 31 kHz live time 84% 26 kHz live time 88% Valery Kubarovsky4 Pair 1 Trigger Tens of trigger versions were analyzed. Pedestals fixed at 200 nA level.

5. Rates and Live Time Live Time

6. Events to tape

7. e + e - Invariant Mass 200 nA 230 nA 250 nA DQM:V0Monitoring/GBLTrack/pairs1/UnconstrainedV0Candidates/Invariant Mass (GeV)"

8. e + e - Reconstructed Events Rate kHz ? 30% increase from 200 to 250 nA Pair 1 trigger contains 3% two tracks events

9. Ratios of Inv. Mass Distributions 250 nA / 200 nA 200 nA 230 nA 250 nA

10. V6/V5 Ratio @ 250 nA V5 V6 V6/V5

11. Hit Rates at 200 nA Valery Kubarovsky11 Max Single Crystal rate: Data = 986 kHz, MC ~3000 kHz Note the shape of the distributions Total rate: Data 30=MHz, MC=1200 MHz

12. Cluster Rates at 200 nA Valery Kubarovsky12 Max Single Crystal rate: Data = 240 kHz, MC ~200 kHz Total rate: Data 5=MHz, MC=14 MHz