SoLID SIDIS_He3 trigger

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Presentation transcript:

SoLID SIDIS_He3 trigger Zhiwen Zhao 2016/10/06 2016/10/18 2016/10/25 2016/11/30 2016/12/13

SIDIS He3 (gas only) hallD generator & Jin’s EC Wiser trigger Whole detector matching only, No hit matching yet e _FA (kHz) EC EC+LGC EC+LGC+SPD EC+LGC+SPD+MRPC electron 70 (56) 63.5(55) 63(55) Pim 531 3.8 Pip 696 4.3 4.2 Pi0 1024 57 54 52 Total: 2324 128 123 e_LA(kHz) EC EC+SPD electron 4.5 4.3 Pim 6.8 6.5 Pip 8.4 7.8 Pi0 13.7 1.3 Total: 33.4 20 h_FA(kHz) EC EC+SPD EC+SPD+MRPC electron 216 184 174 Pim 5895 5838 5267 Pip 7662 6969 6863 Pi0 5006 1120 842 Total: 18779 14111 13146

Trigger condition Trigger logic hit matching Trigger condition Trigger logic e_FAEC: R(105-235)cm, Q2>=1, Jin’s wiser trigger curve e_LAEC: R(80-140)cm,P>3, Jin’s wiser trigger curve h_FAEC: R(105-235)cm, cut below MIP, Jin’s wiser trigger curve e_LGC: at least 2 PMT and each has at least 2 photons, similar to PVDIS e_FASPD and h_FASPD: Edep>0.5MeV e_LASPD: Edep>1.5MeV e_MRPC and h_MRPC are not working yet, so not used e_FA: e_FAEC & e_LGC & e_FASPD e_LA: e_LAEC & e_LASPD h_FA: h_FAEC & h_FASPD Starting from EC and record all hits pass trigger Then check matching LGC sectors and two neighboring sectors, if any sector passes, then LHC pass Then check matching SPD sector Finally we have individual triggers, we can count single trigger rate without double counting Then check coincidence trigger with all hits from single trigger Check e_LA & h_FA Check e_FA & h_FA and choose to cut on hit distance on FAEC

single (gas(hallD),win up(wiser),win down(wiser)) Jin’s EC Wiser trigger hit matching electron trigger self coin prescaled by 10 61/10=6kHz e_FA(kHz) EC EC+LGC EC+LGC+SPD Electron 68 (57) 63(56) 58(52)+1+2 Pip 694(643) 4.2(3.3) 3.8(3.1)+2.5/2+1.6/2 Pim 537(492) 4.0(3.2) 3.6(3.0) +2.3/2+2.1/2 Pi0 1024(120) 43(31) 32(30) +1.1/2+5.8/2 P 202(185) 0(0) 0(0) +0/2+0/2 all hadrons, no electron 2692 62 47 +?+? Total: 105+4+7=116 Only primary particle in parenthesis, In case of pi0, only e+ or e- Pi0 before LGC 26(26) Pi0 before GEM 13(12) e_LA(kHz) EC EC+SPD electron 4.5(4.3) 4.1(4)+3.6+2.6 Pip 8.6(8.5) 7.9(8.1)+8.4/2+5.6/2 Pim 6.4(6.0) 5.9(5.7) +6.1/2+3.7/2 Pi0 15.3(0.2) 0.6(0.2) +0.4/2+0.3/2 P 2.9(3.2) 2.8(3.0) +7.6/2+4.8/2 all hadrons, no electron 38 18 +?+? Total: 22 +14+10=46 h_FA(kHz) EC EC+SPD electron 140(94) 100(87) +4+4 Pip 5855(4898) 5151(4447) +3405/2+4570/2 Pim 4925(3787) 3971(3435) +3300/2+4590/2 Pi0 4607(811) 548(468) +33/2+171/2 P 3510(3103) 3164(2831) +2243/2+2563/2 all hadrons, no electron 17392 12805 +?+? Total: 12913 +4500+6000=23413 only primary particle in parenthesis Wiser rate scaled down by 2 Random coin (116+46-10.3-7.06-6.96)*23413*1e3*30e-9=97KHz

Coin Direct estimation: using SIDIS generator, EC&GEM acceptance histogram and 8deg cut with or without vertex angle>2.5deg hit matching Coin trigger rate (kHz) (EC distance cut for e_FA & h_FA) e_FA h_FA e_LA e_FA & h_FA e_LA & h_FA (e_FA & h_FA) + (e_LA & h_FA) Direct estimation e+pip >= 0cm 36(32) 127(74) 4.5(3.5) [80]36(6.3) [1.3]1.2(0.71) [81.3]37.2(7.0) (7.54) >= 0.1cm same [18]13(6.3) Same [19.3]14.2(7.0) >= 32.5cm [11]9.1(6.3) [12.2]10.3(7.0) (7.45) e+pim 27(25) 99(58) 3.3(2.8) [58]27(4.7) [1]0.76(0.53) [59]27.76(5.2) (5.51) [13]9(4.7) [14]9.76(5.2) [7.5]6.3(4.7) [8.4]7.06(5.2) (5.44) e+pi0 27 42 2.6 0.05 27.05 3.8 3.85 0.6 0.65 e+p 22 94 2.5 0.76 22.76 7.9 8.66 6.2 6.96 SIDIS coin (9.1+6.3+0.6+6.2)+(36+27+27+22)/10+(1.2+0.76+0.05+0.76)=36kHz only primary particle in parenthesis, double counting NOT removed in square bracket

Coin hadron coin (17)+(47)/10+(5.9)=28kHz Direct estimation: using SIDIS generator, EC&GEM acceptance histogram and 8deg cut with or without vertex angle>2.5deg hit matching Coin trigger rate (kHz) (EC distance cut for e_FA & h_FA) e_FA h_FA e_LA e_FA & h_FA e_LA & h_FA (e_FA & h_FA) + (e_LA & h_FA) Direct estimation e+kp >= 0cm 10 19 1 0.06 10.06 >= 0.1cm same 1.7 1.76 >= 32.5cm 0.6 0.66 e+km 1.3 6.8 0.002 1.302 0.23 0.232 0.11 0.112 e+k0 5.4 23 0.5 0.12 5.52 1.9 2.02 1.6 1.72 all hadrons, no electron 47 18 12805 5.9 53 22 28 17 only primary particle in parenthesis, double counting NOT removed in square bracket hadron coin (17)+(47)/10+(5.9)=28kHz

SIDIS_He3 trigger rate summary (2016/12/2) Single e 116+46=162kHz Random coin 97kHz True coin rate <70kHz electron trigger self coin 6kHz coin from SIDIS 36kHz coin from hadrons 28kHz (still missing window) Total coin rate 167kHz + from hadrons of windows All three true coin rate has overlaps but can’t know how much without a complete generator!

SIDIS He3 total coin trigger (2016/12/13) EC,LGC,SPD trigger condition has no change Use 20ns time window enlarge upstream collimator to block 7-24 deg, reduce LA e trigger from 46 to 32 Change collimator from W powder to pure W, FA hadron trigger change from 23413 to 20413 Reduce hadron coin rate 23 by factor 2(?) to remove overlap with SIDIS coin Random coin 45.5=(116+32-10.3-7.06-0.65-6.96-11.5)*20413*1e3*20e-9 SIDIS coin 27 Hadron coin 11.5 Prescale FA inclusive e trigger 116/10 Total 45.5+27+11.5+11.6=96kHz

Todo Update EC trigger curve and work on EC simulation in general Update MRPC simulation for trigger Use halld generator for He3 window Modify halld generator including e and hadrons Add low energy EM better Add elastic, quasi-elastic? Add radiative correction?