(CDFnote #5461, compressed postscript document)
| Run I (B) | Run II (*) | |
| Average Istantaneous
Lum. (cm-2 s-1) |
8exp30
3.3exp30 (1A) |
1exp32 --> 2exp32 (36 bunch) |
| Ave. Lum.ist.(cm-2 s-1)
in 2002 |
2exp32 (108 bunch) | |
| Bunch Number | 6 | 36 --> 108 |
| Crossing Time (ns) | 3500 | 396 (36 bunch)
132 (108 bunch) |
| Average Num. of
Interactions/Crossing |
~1.8
~1.2 (1A) |
2.5 (36 bunch)
2 (108 bunch) |
| Acquisition Rate(Hz) | <7 | <75 |
| Min Bias Rate (Hz) | 0.25 | 1.00 |
| Effective Xsection (nb) | 700 ? (350) | 700 ? (350) |
| Integrated Lum. (pb-1)
(written to tape) |
~97
~21 (1A) |
~2 k |
| Total num. of Events
(written to tape) |
71 M | 1.4 G |
| Min Bias num. of events | 2.5 M | 18.6 M |
| MB events in nple | 1.5 M | 11.2 M |
| MB events after cuts | 0.73 M | 5.4 M |
| MB Trigger | BBC (Dynamic Prescale)
0-Bias (1A) |
0-Bias |
| Run duration (years) | ~1.5
~0.75 |
~1 |
| Run Time (hours) | ~12 | ~7 |
| Run hours to reduce
lum. of a factor 2 |
? | ~7 |
| RAW events size (kb) | ~100 | ~250 |
| PAD event size (kb) | ? | ~60 |
(*)all data for Run II are extimates !!!
Incremento di statistica rispetto al Run IB:
# Eventi IB 0.73 M
-------- = ----- ~ 7.5
# Eventi II 5.4 M
Poiche' durante il Run I abbiamo collezionato un totale di ~2.3 M eventi
a 1800 GeV
(run 1A+1B+1C), l'aumento di statistica rispetto al Run I si riduce
ad un fattore:
# Eventi I 2.3 M
--------- = ----- ~ 2.3
# Eventi II 5.4 M
Formule
per la stima del numero di eventi
Created: Thur. Nov 25 1999 by Niccolo'
Moggi (moggi@bo.infn.it)
Last modified: 23/10/2000, Niccolo' Moggi