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Timing In

Updated on Thu, 2017-05-04 10:53. Originally created by sprastar on 2017-03-04 16:47. Under:

Timing scan after installing QT32c board on 03/17/2017

#EPD Trigger is present in all following runs(i.e. +BBC_TAC +BBC_E + BBC_W)
Timing Scan
-----------
Pre-Post Run# QTb Start QTb End QTc Start QTc End TAC Stop
Pre=2, Post=2 18066043 8 24 not precent not precent 48
Pre=2, Post=0 18076064 0 16 0 16 56
Pre=0, Post=2 18076065 0 16 0 16 56
Root files for above runs are here: rcasxx:/gpfs01/star/subsysg/EPD/sprastar/EPDHists
I have attaced the results for run above runs and run 18066043.
Run 18066043 was taken earlier for QTb STAR Delay =8 and QTb END Delay = 24 ns.

Then we did the Gate scan in 2ns. During this step we recorded only pre, post = 0,0 crossings.
From this gate scan we noticed QTb STAR Delay =0 and QTb END Delay = 16 ns is best.
From the runs 18076064 and 18076065 it seems we are in pre = 1 crossing for QT32 'b' board, i.e PP-4 even, PP-5 odd, PP-6 (even & odd)

and QT32 'c' board in trigger crossing.
Timeing seems completely messed up.
Let me thing more in the morning






Gate Scan
--------
Following runs are taken on March 19th.
In the following runs EPD Trigger is updated so we have now JP2 (i.e. +BBC_TAC +BBC_E + BBC_W + JP2)

No Run Number Gate Start QT 32 b Gate End QT 32 b  Gate Start QT 32 c Gate End QT 32 c TAC Stop Data Start Address Initial Study by Prashanth Mike's PrePost study and
Comments
1 18078043 0 16 0 16 56 c=8, b=8 EPD_plots_18078043.pdf PrePost=-1
1st run of the fill
2 18078044 4 20 4 20 56 c=8, b=8 EPD_plots_18078044.pdf PrePost=-1
3 18078045 8 24 8 24 56 c=8, b=8 EPD_plots_18078045.pdf PrePost=0
4 18078046 12 28 12 28 56 c=8, b=8 EPD_plots_18078046.pdf PrePost=0
5 18078047 16 32 16 32 56 c=8, b=8 EPD_plots_18078047.pdf This run was stopped for beam squeeze
6 18078048 16 32 16 32 56 c=8, b=8 EPD_plots_18078048.pdf PrePost=0
7 18078049 20 36 20 36 56 c=8, b=8 EPD_plots_18078049.pdf stopped for polarization measurements
8 18078050 20 36 20 36 56 c=8, b=8 EPD_plots_18078050.pdf PrePost=0
9 18078051 24 40 24 40 56 c=8, b=8 EPD_plots_18078051.pdf PrePost=0
10 18078052 28 44 28 44 56 c=8, b=8 EPD_plots_18078052.pdf PrePost=0  Taken By Yang Wu
11 18078053 32 48 32 48  56 c=8, b=8 EPD_plots_18078053.pdf PrePost=0
12 18078054 36 52 36 52  56 c=8, b=8 EPD_plots_18078054.pdf PrePost=0
13 18078056 40 56 40 56  56 c=8, b=8 EPD_plots_18078056.pdf PrePost probably 0 (bad stats)
14 18078057
 44 60 44 60  56 c=8, b=8 EPD_plots_18078057.pdf PrePost probably 0 (out of gate)
15 18078058 48 64 48 64  56 c=8, b=8 EPD_plots_18078058.pdf PrePost=0?  or 1?
              c=8, b=8    
        Negative Scan
16 18082042 0 16 0 16 56 c=8, b=8  EPD_plots_18082042.pdf  QT32b in PrePost=-1 QT32c in PrePost=0
 17 18082043
 107(0) 123(16) 107(0) 123(16) 56 c=8, b=8  EPD_plots_18082043.pdf  QT32b in PrePost=-1 QT32c in PrePost=0
 18 18082044 103(-4) 119(12) 103(-4) 119(12) 56 c=8, b=8  EPD_plots_18082044.pdf  QT32b in PrePost=-1 QT32c in PrePost=0
 19 18082045 99(-8) 115(8) 99(-8) 115(8) 56 c=8, b=8  EPD_plots_18082045.pdf  QT32b in PrePost=-1 QT32c in PrePost=0
 20 18082046 95(-12) 111(4) 95(-12) 111(4) 56 c=8, b=8  EPD_plots_18082046.pdf  QT32b in PrePost=-1 QT32c in PrePost=0
 21 18082047 91(-16) 107(0) 91(-16) 107(0) 56 c=8, b=8  EPD_plots_18082047.pdf  QT32b in PrePost=-1 QT32c in PrePost=0
 22 18089004 87(-20)  103(-4)  87(-20) 103(-4) 56 c=8, b=8
 		  EPD_plots_18089004.pdf  
 23 18089007 83(-24) 99(-8) 83(-24) 99(-8) 56 c=8, b=8
 		  EPD_plots_18089007.pdf  
 24 18089008 79(-28) 95(-12) 79(-28) 95(-12) 56 c=8, b=8
 		  EPD_plots_18089008.pdf  
 25 18089009 75(-32) 91(-16) 75(-32) 91(-16)  56 c=8, b=8
 		   EPD_plots_18089009.pdf  
 26 18089010 99(-8) 115(8) 99(-8) 115(8)  56 c=8, b=7
 		   EPD_plots_18089010.pdf  
27 18089013 99(-8) 115(8) 99(-8) 115(8)  56 c=8, b=9
 		   EPD_plots_18089013.pdf  
Root files for above runs are here: rcasxx:/gpfs01/star/subsysg/EPD/sprastar/EPDHists

Overlay plot of run 18078043, 18078044, 18078045, 18078046 is available here:https://online.star.bnl.gov/epd/TimingScan/OverlayPlot.pdf
In this plot I compare
QT32c
prepost =0
Gate (STAR,STOP) = (0,16)
Gate (STAR,STOP) = (4,20)

 		 vs.
 QT32b
Prepost=-1
Gate (STAR,STOP) = (0,16)
Gate (STAR,STOP) = (4,20)
Gate (STAR,STOP) = (8,24)
Gate (STAR,STOP) = (12,28)


Run 18090046 has new Tier1 file = trg_170329
Here is the analysis: https://online.star.bnl.gov/epd/TimingScan/EPD_plots_18090046.pdf


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