2 July 2004 Journée DPNC 2004 FAST: A precision measurement of muon lifetime. Chiara Casella FAST collaboration: A.Barczyk (1) , J. Berdugo (2) , J. Casaus (2) , C. Casella (3,4) , K. Deiters (4) , P. Dick (4) , A. Dijksman (4) , J. Kirkby (1) , L. Malgeri (1) , C. Mana (2) , J. Marin (2) , G. Martinez (2) , C. Petitjean (4) , M. Pohl (3,5) , E. Sanchez (2) , C. Willmott (2) CERN 1 , CIEMAT 2 , UNIGE 3 , PSI 4 , NIJMEGEN 5
14
Embed
2 July 2004Journée DPNC 2004 FAST: A precision measurement of muon lifetime. Chiara Casella FAST collaboration: A.Barczyk (1), J. Berdugo (2), J. Casaus.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
2 July 2004 Journée DPNC 2004
FAST: A precision measurement of muon lifetime.
Chiara Casella
FAST collaboration:
A.Barczyk (1) , J. Berdugo (2) , J. Casaus (2) , C. Casella (3,4) , K. Deiters (4), P. Dick (4), A. Dijksman (4), J. Kirkby (1), L. Malgeri (1), C. Mana (2), J. Marin (2), G. Martinez (2),
C. Petitjean (4), M. Pohl (3,5), E. Sanchez (2), C. Willmott (2)
CERN 1 , CIEMAT 2 , UNIGE 3 , PSI 4 , NIJMEGEN 5
2 July 2004 Journée DPNC 2004
Goal of the experiment
• Balandin et al. (1974)• Bardin et al. (1984)• Giovanetti et al. (1984)
ppm18
• the uncertainty on is the dominant contribution to the uncertainty on GF:
2
2
42
1
2
5
m
mth
m
m
G
G
F
F qmGF 1192 3
521
• FAST goal: ppm1
0.07 ppm (PDG 2002) 0.5 ppm
(Van Ritbergen and Stuart - 1998)
≤12 ppm (PDG 2002)
ppmG
G
F
F 5.0
9 ppm
2 July 2004 Journée DPNC 2004
Description of the experiment
1 pixel = 0.4 x 0.4 x 20 cm3
12.8 x 19.2 x 20.0 cm3
32 x 48 pixels = 1536 pixels 8 x 12 = 96 groups of 16 bars