Run5 Goals

1
DSM Tree Structure 2007
2
Calorimeter DSMs
Full topology Pass through final bit list
x3
x3
x2
Trigger patch BEMC 16 towers EEMC 10,8 or 6 towers
Bottle neck
Full jet patch(6) and paired (3) Out to layer 2
5 bit TotE sum, for pairs HT.TP bit, TP bit,
2bit JPth Each pacth 2-bit HTthr
Level 0 out to layer 1 Partial jet patch ADC
sum HT, HT.TP and JP thr bits
3
10 of 16 bits in TCU in 2006
4
Run6 (change in Transverse)
Slow BEMC-JP1 MB Prescale1
10Hz EEMC-JP1 MB Prescale1
2.5Hz B E EMC-HTTPMB L040Hz
(_at_L12x1030)
L2 B / E HT2 5 / 5 Hz (Higher thr 4Hz)
L2 B / E pi0/photon or prescale 2.5
/ 2.5Hz (Higher thr 2.1Hz) L2 B Upsilon
1Hz B E EMC JP0EtotMB Prescale10
L010Hz (Prescale1 L0100Hz) L2 BE
di-jet or mono-jet or prescale 1.1Hz
(L211Hz) FPD-slow MB Prescale1
5Hz BE EMC-JP0 MB Prescale50
1Hz FPD-fast MB Prescale50
1Hz B EMC-JP1 (No MB)
ltlt1Hz B JP0Etot (No MB)
ltlt1Hz E HTTP (No MB)
ltlt1Hz BEMC JP2 Prescale 1 ltlt
1Hz FPD-slow Prescale20
ltlt1Hz J/psi MB Prescale20 L0 10Hz
/ L21Hz Muon Anti-Centauro
1Hz FPD fastBE EMC HTTPMB lt1Hz MB
Prescalehigh 0.2Hz zerobias
Prescalehigh 0.2Hz
Total 30 triggers
Fast BE EMC-HTTPMB L040Hz (_at_L12x1030) MB
Prescalehigh
5Hz Zero-bias Prescalehigh
5Hz FPD-fast MB Prescale1
50Hz FPD-fast Prescalehigh
1Hz
Assuming No Overlap Longitudinal L2 abort
40Hz / 1k-2kHz 2-4 dead L2 accept
41Hz /94Hz 42 dead Slow total
44-46 dead Transverse L2 abort 120Hz /
1k-2kHz 12-6 dead L2 accept 46Hz /94Hz
48 dead Slow total 54-60 dead
5
Inclusive Jets
Need justification for other physics and trigs
2008 projections
Dave 2006
Tai 2006
Want turned on fully by 15GeV maybe little
higher?
30 pb-1 recorded vs 6 x5 Pol .65 vs .60
x1.4 A_LL error bars 1/2.5
smaller Could gain at high pT from lower dead time
6
First estimates of dijet results for 2008
20 pb-1 and 65 polarization Uniform pTgt5GeV
(should be optimized by region) Separated by calo
region coinc. to emphasize x ranges
7
1.1pb-1 int lumi expect x20 2M sec/10 wks data
acq.
Estimated L2 rates from 2006 L2 J. Balewski
http//www.star.bnl.gov/protected/spin/balewski/2
008-trigger/1_rateFrom2006diJets/
Est. from rate plots 130Hz
L2 in
Use random to avoid conflicting L2 condition else
L2 dijet
L2 out
6Gev jet 4 GeV HT 3.5 awayside jet
x2 for removing Etot
20x100 L x ps
20x1 L x ps
8
Run8 (ref run 7145009 500kHz 55Live)
CAD Guidance is x2 in peak and avg luminosity
Physics trigs Physics 2006 thr.
rate 2006 Goal 2008 Goal
2008 thr. BEMC-JP1 MB Incl. Jets
BJP160 8.5GeV 9.9Hz PS1 10Hz
4Hz 70 10.9GeV EEMC-JP1 MB
Incl. jets EJP152 9.0GeV 3.1Hz PS1 2.5Hz
3Hz 58 10.4GeV BE
HTTPMB L2 g-based HT116 TP231 B46Hz
L040Hz ETP120 BTP119 4.5/4.7 GeV
3.8GeV 7.3GeV E14Hz
L2 BHT2
HT224 5.7GeV 3.6Hz 5Hz L2 EHT2
HT222 5.2GeV
1.8Hz 5Hz L2 B
gamma 3.8GeV/5.2GeV 8.7Hz 2.5Hz
8Hz TP6GeV
L2 E gamma
3.7GeV/5.2GeV 5.0Hz 2.5Hz
8Hz TP6GeV L2 B Topology
Upsilon 4/2.5/6/15GeV 2.0Hz
1Hz 4Hz
CTB? g-Jet topology coin lower thr
new
BE JP0EtotMB
L2-Jets BJP042 EJP032 B150Hz PS2
L0100Hz B70Hz 8GeV
Etot109 4.2/4.2/15.1GeV
E100Hz PS2 E0lt60Hz ps8 E125Hz 4GeV/6GeV
L2 BE di-/mono-jet/gamma 3.35/8GeV
1.5/.6Hz 1.1H limit 30Hz 15/7/7Hz need
study BEMC JP2 High pT jets
JP2110 20GeV .1Hz PS 1 ltlt 1Hz FPD-slow MB
mid-rap. jet
unused PS1 5Hz FPD2-slow
th2220
1.5Hz J/psiMB J/psi
1/1/2.2/5GeV 73Hz PS20 L010Hz
L21Hz LO topology di-jet g-jet

new Muon Anti-Cent. Muon test
2.4Hz 1Hz FPDfastBE
HTTPMB g-jet di-jet
unused lt1Hz FPD single RO all
Fast dets Low E Electrons HF, A_LL

new Mult
thrPS
scaled from 7145032
9
Issues, questions and details

• Best to do inclusive jets as monojets in L2.
  11-12 GeV thr. should give modest rates and turn
  on by 15GeV where stats from 2006 are still
  good.
• Di-jets bandwidth limited. Emphasize kinematics
  for qg by setting thresholds such that at least
  one parton xgt0.1. In L0 lower endcap threshold
  than barrel. In L2 different thresholds for E-E,
  B-E and E-E dijets. Can we devote more than 15
  Hz total here?
• g-jet ht.tp at 6GeV gives 8 Hz in each of barrel
  and endcap. Raising to 6.7 GeV 1/2s rate. How
  high willing to go with thresholds? Add topology
  with jet to go lower and/or limit rates? Avoid
  Etot requirement at L0?
• FMS-central di-jets/p0-p0 corr. low pT3GeV. FMS
  singles-fast detector readout. Poor jet Et
  resol. But good stats on xlt0.01. Level of
  p0/g separation for g-jet measurement? Deadtime
  if read out BSMD?
• FMS-central g-jet/dijet/p0 slow detector readout.
  Some sample to check angle reconstruction?
  Sufficient stats for DG? Topology at L0 and/or
  L2.
• Electrons for HF and A_LL. Can we reach relevant
  statistics in A_LL? Can CTB help limit rates w/o
  topology in L0? Accommodate multiple HT thr?
• Upsilon high priority for HF but is there any way
  to accommodate rates for J/psi?
• Total deadtime is important would like 2/3rds
  live
• But would mostly fill at peak rate of 30Hz spin
  B/EEMC triggers

10
If limit to 10 of 16 bits in TCU again in 2008
2 bits Barrel JP low thr possible coinc with
endcap or primary dijet trigger to L2 Mid
thr primary dijet trigger to L2
inclusives High inclusive jets
JP w/o minbias 3 bits Barrel HT
or HT.TP non photonic electrons,upsilon-
multiple thresholds and prescales 1 bit J/Psi
topology 2 bits endcap JP low endcap dijet
trigger to L2 prescale or coinc with FMS mid
endcapbarrel dijets to L2
endcap L2 trigger high inclusive jets
coincidence with
barrel 1 bit Endcap Etot alternate trigger for
endcap-endcap dijets 1 EEMC HT.TP Low E
electrons in endcap
Additional possibilities ht.tp jet patch
topology New luminosity monitor Vppd,
alternate config BBC or ?
I believe only DSM issue is that TP bits need to
be dropped at layer 0 to layer 1 interface to
allow for extra threshold for barrel HT.TP