Start of Shift Notes:  

Test runs for COT new HV config. Start data taking with new proposed setting.

Summary of tracking trigger cross section performance for runs 
taken this evening.  


Run 179096 
Linit =4.9E31 
SL 1/2 off , SL2 masked ON XFT 
SL 3,5  50% gain 
SL 4 100% gain 

trigger                measured           reference 
------------------     --------           -------- 
4 GeV single track      900ub              475ub 
7 GeV single track      300ub              110ub 
two 2 GeV tracks        1.6mb              1.2mb 
>six 2 GeV tracks      16.3ub              9.2ub 
scenario C              220ub              132ub     
two_CMU1.5_PT1.5        1.5ub              1.3ub 
CMUP6_PT4               2.0ub              1.7ub 
CEM4_PT4                 26ub               22ub 
CEM8_PT8                1.9ub              1.4ub 

Comments:  
1. "reference" is cross section expected for standard 
   operating conditions. 
2.  Cross section numbers from a combination of XMon 
   and run summary.  Your numbers may vary a bit from mine. 
3. Total Fred L1A rate about 16.5kHz at 5E31, which is 
   about 4-5kHz higher than normal.  The additional rate 
   is coming mostly from the higher scenario C cross section. 
4.  No SVX in this run, so no SVT triggers at L3.  I 
   looked quickly at non-SVX/SVT L3 paths and they looked ok. 
5.  Even though the track rates are up, the triggers that 
   require matched objects (electron=track+EM, muon=track+stub) 
   have cross sections that are not much higher than the 
   reference. 
6.  All triggers listed above use four-layer XFT tracks 
   except for the CEM8_PT8 trigger. 


=============================================================== 
Run 179097 
Linit =4.6E31 
SL 1/2 off , SL2 masked ON XFT 
SL 3,5  50% gain 
SL 4 ~75% gain 

trigger                measured           reference 
------------------     --------           -------- 
4 GeV single track      670ub              470ub 
7 GeV single track      220ub              100ub 
two 2 GeV tracks        1.2mb              1.1mb 
>six 2 GeV tracks      10.0ub              8.5ub 
scenario C              163ub              129ub     
two_CMU1.5_PT1.5        1.2ub              1.3ub 
CMUP6_PT4               1.7ub              1.7ub 
CEM4_PT4                 23ub               22ub 
CEM8_PT8                1.7ub              1.4ub 

Comments:  
1. The cross sections have dropped, but not by very 
   much.  It looks like the single hit efficiency must still 
   be pretty high in SL4. 
2.  Still no SVX/SVT. 

========================================================== 
Run 179099 
Linit =4.3E31 
SL 1/2 off , SL2 masked ON XFT 
SL 3,4,5  50% gain 

trigger                measured           reference 
------------------     --------           -------- 
4 GeV single track      460ub              460ub 
7 GeV single track      154ub              100ub 
two 2 GeV tracks        590ub              1.1mb 
>six 2 GeV tracks         3ub                8ub 
scenario C               86ub              126ub     
two_CMU1.5_PT1.5        0.5ub              1.2ub 
CMUP6_PT4               0.9ub              1.7ub 
CEM4_PT4                 17ub               22ub 
CEM8_PT8                1.4ub              1.4ub 

Comments:  
1. We've fallen off the cliff.  The scenario C cross 
   section is now about 67% of reference.  The 4GeV track 
   cross section is about right, and the 7GeV cross 
   section is still high. This means that we have lost efficiency 
   and replaced it with fake tracks...that's a purity double whammy. 
2.  Total L1A rate about 7.6kHz, significantly below where 
   we would normally run at this luminosity. [Without DPS, we 
   would normally be at 10-11kHz, then DPS would kick in and 
   raise the rate to 15kHz.] 
3.  Still no SVX/SVT.   When we integrate the SVX, we will 
   have no problems with high L1A rate exciting any resonances. 

========================================================== 
Run 179100 
Linit =4.1E31 
SL 1/2 off , SL2 masked ON XFT 
SL 3,4,5  50% gain, SL4 3-miss for XFT 

trigger                measured           reference 
------------------     --------           -------- 
4 GeV single track      940ub              460ub 
7 GeV single track      370ub               95ub 
two 2 GeV tracks        1.3mb              1.1mb 
>six 2 GeV tracks        17ub                8ub 
scenario C              230ub              125ub     
two_CMU1.5_PT1.5        1.2ub              1.2ub 
CMUP6_PT4               1.9ub              1.6ub 
CEM4_PT4                 25ub               22ub 
CEM8_PT8                2.0ub              1.4ub 

Comments:  
1. The cross sections are quite a bit bigger with the 3-miss 
   configuration on SL4.  We'll have to await the offline 
   analysis to see what this does to trigger efficiency. 
2.  From the standpoint of Level 1, we could conceivably 
   run the full trigger table in this configuration except at 
   the highest luminosities.  [This scenario C cross section 
   is a bit big to run @5E31.]   We can definitely run the 
   high pT part of this configuration at any luminosity. 


========================================================== 
Run 179103 
Linit =3.9E31 
SL 1/2 off , SL2 masked ON XFT 
SL 3,4,5  50% gain, SL4 3-miss for XFT 
silicon included 

trigger                measured           reference 
------------------     --------           -------- 
L2_BCHARM_HIGHPT        900nb               500nb 
L2_BPIPI_HIGHPT         360                 220 
L2 Higgs Multijet       104                  79 
L2 muon+SVT             468                 327 


Comments:  
1. L1 cross sections same as 179100. 
2. L1A 13kHz, L2A 275Hz, L3A 45Hz. 
3. See comments on 179100 as well. We can run the 
   standard physics table with 3-miss in SL4 at all 
   except the highest luminosities.   


Summary: 
Of course we need to learn about efficiency and 
purity of the triggers.  We've seen that the fake rate 
does not blow us out of the water, which is good.  
Just because we're able to recover rate doesn't mean 
we've recovered physics.  Offline analysis will be 
necessary to further evaluate efficiency, fake rates 
and other XFT algorithmic possibilities. 

IMU BMU Cell West plot in YMON has some hot towers. There are no mention of these spikes in the e-log nor the CO reference plots.

CLTD occupancy from LUMMON has a new dip at ch#91 (lower right hand plot). This dip is not present in CO reference plot nor mentioned in the recent e-log.

New CMP spike (???) on CMP Occupancy plot for part T, stack # ~56

1) Continue w/COT/xft test for run=179100 

2) CSL notified to flush 179100 and email to cdf_offline_operations requesing these runs to be
ExpressProduction. 


3) Start normal run=179103 at 3.9E31 with new default setting of COT.  

4) There seems some hot towers in BMU west at stack number 140. Experts should look into this. 

5) 5:30 AM, CMU trip north east channels from 18 to 23, reset ok  

6) Start a new run 179104. 

Runs                   179103, 179104
Delivered Luminosity   920.8 nb-1  
Acquired Luminosity    771.2 nb-1  
Efficiency             83.7