- Email: [email protected]
The DØ detector for run II
ELSEVIER
Proceedings of ICHEP 2002, pp. 906–908 S. Bentvelsen, P. de Jong, J. Koch and E. Laenen (Editors)
31st INTERNATIONAL CONFERENCE ON HIGH ENERGY PHYSICS AMSTERDAM
!" ##$#
% &' % ( ( )* + ,( - ..# / *
( ( ' - . * + ' ' + (# % - .. , ( ' 0 ½ 01 ' - .# $ +**' ( 2 +
+ ' ' #3 #!4 %5# % + , + ( - .. +
+ + 6 (( ,'* ' 7 ' , '* ,+ , 8 9 *, + + * + % , + ' )+ 7+ : ;Ì + + ' ( ( ( < (( ( : ( * ,+ + ,# % ' + ( ( ' + ( '* : ,( => & (# # % + + *
( ' ,+ + ' * + , + + ( ) + '' 0% '( + ) ' ,+ + ( =0># % , ( , ' ' + (( ? + * )+ + ( ) , + + * ( # ' (( +*
+ ,( ' ' ( )+ ', # $ ,* !"" #$%
c 2003 Elsevier Science B.V. All rights reserved. doi:10.1016/S0920-5632(02)02275-2
,+' &/ @+ + , + ,('# % * ( (( +8 ' (
',' & (# #
% +', ( ' ' + 8 *( ' + ' ' - . +', ,* ( (( + + , A1 + +'( + BC ) + + +',' 1#D + # $ A
+ ' (( + # % ' +'' # & + BC + ' ( ', # & (# + , *BC ' * + 7,+ # E ,+ ' & (# +# % + ' , : + ( , *: # & (# ;Ì ' : ,* ;Ì ( '( F , G5# + + * ( , ( +( , H 0 + '( I # . + ( 4
+ ,, 4J1 J41 + ( + # . ( 4 3*+ ' ( + ,
¾
The DØ detector for Run II
907
D Ø Trigger System a PV
'HFLVLRQWLPHV aPV Detector
L1 Tr igger
0+] 7 M Hz
L1 LUM
LUM
L 2 Tr igger
10N+] kHz
CAL
L1CAL
L2Cal
FPS
L1 FPS
L2PS
CFT/ CPS
L1 CTP
L2CFT
aPV L3 Trigger N+] 1 k Hz +]
Level 1
Level 2
• Subdetectors • Towers, tracks, clusters, ET • Some correlations • Pipelined
• Correlations • Sim ple Reconstruction • Calibrated Data • Separated vertex • Physics Algorithms • Physics Objects e, P, j, W, ET
Global L2
/'$4
L1CTT SMT
L2STT
Muon
L1 Muon
FPD
L1FPD
L2 Muon L2FW: Combined objects ( e, µ ,j )
L1FW: towers, tracks, correlations
Level 3
7DSH
• Entire Trigger Menu configurable and downloadable at Run start • Trigger Meisters provide trigger lists for the experiment by collecting trigger requests from all physics groups in the Trigger Board • All past and present trigger lists are stored and maintained in the dedicated trigger database
80
Peak Mass: 90.8 +- 0.2 GeV Width: 3.6 +- 0.2 GeV
60
40
# evts
Number of Entries: 604
N events / 100 MeV/c 2
Events / 2 GeV
D0 Run II Preliminary 100
60
10
50
DØ Run 2 Preliminary
3
D ∅ Run 2 Preliminary
40
J/ ψ → e +e -
10
2
30
10
20
20
10 0 0
20
40
60
80 100 120 Di-Electron Mass (GeV)
0 1
1
2
3
4
5
6
7
2
8
mass (GeV/c )
0
100
200
300
400 500 Missing E T (GeV)
Ì
!" # $ % & ' #
( ) * +, ,-
. '/ 01 '/ 2 ! 3 4 ! 24!3 5 6 7 4 6 7 48
908
(YHQWV0H9
L. Babukhadia
J/ Ψ invariant mass
'5XQ3UHOLPLQDU\ S P !*H9
140
7
120
track p T>2.0 GeV/c 2 vertex χ <10
100
80
60
40
20
Chi2 / ndf = 43.84 / 44 p0 = 115.8 ± 6.075 p1 = 3.071 ± 0.0001441 p2 = 0.07981 ± 5.731e-05 p3 = -44.4 ± 341.5 p4 = 99.51 ± 317.7 p5 = 0.1129 ± 0.5466
0 2
2.2 2.4 2.6 2.8
0PP *H9
3
3.2 3.4 3.6 3.8 24 GeV/c
Ì
Æ
!"
Æ Ì ! "# $ % Æ " Ì & #' () % " * Ì & #+ () % Ì , - .
% 4
2 33 01 % % 5 % 6Ì % 7% % % % 7 7 8 5
%
% - % % 09: % ; % * <=
# / 01 ; % ' ( (% >%
/ 01 2 33 /
% %
Proceedings of ICHEP 2002, pp. 906–908 S. Bentvelsen, P. de Jong, J. Koch and E. Laenen (Editors)
31st INTERNATIONAL CONFERENCE ON HIGH ENERGY PHYSICS AMSTERDAM
!" ##$#
% &' % ( ( )* + ,( - ..# / *
( ( ' - . * + ' ' + (# % - .. , ( ' 0 ½ 01 ' - .# $ +**' ( 2 +
+ ' ' #3 #!4 %5# % + , + ( - .. +
+ + 6 (( ,'* ' 7 ' , '* ,+ , 8 9 *, + + * + % , + ' )+ 7+ : ;Ì + + ' ( ( ( < (( ( : ( * ,+ + ,# % ' + ( ( ' + ( '* : ,( => & (# # % + + *
( ' ,+ + ' * + , + + ( ) + '' 0% '( + ) ' ,+ + ( =0># % , ( , ' ' + (( ? + * )+ + ( ) , + + * ( # ' (( +*
+ ,( ' ' ( )+ ', # $ ,* !"" #$%
c 2003 Elsevier Science B.V. All rights reserved. doi:10.1016/S0920-5632(02)02275-2
,+' &/ @+ + , + ,('# % * ( (( +8 ' (
',' & (# #
% +', ( ' ' + 8 *( ' + ' ' - . +', ,* ( (( + + , A1 + +'( + BC ) + + +',' 1#D + # $ A
+ ' (( + # % ' +'' # & + BC + ' ( ', # & (# + , *BC ' * + 7,+ # E ,+ ' & (# +# % + ' , : + ( , *: # & (# ;Ì ' : ,* ;Ì ( '( F , G5# + + * ( , ( +( , H 0 + '( I # . + ( 4
+ ,, 4J1 J41 + ( + # . ( 4 3*+ ' ( + ,
¾
The DØ detector for Run II
907
D Ø Trigger System a PV
'HFLVLRQWLPHV aPV Detector
L1 Tr igger
0+] 7 M Hz
L1 LUM
LUM
L 2 Tr igger
10N+] kHz
CAL
L1CAL
L2Cal
FPS
L1 FPS
L2PS
CFT/ CPS
L1 CTP
L2CFT
aPV L3 Trigger N+] 1 k Hz +]
Level 1
Level 2
• Subdetectors • Towers, tracks, clusters, ET • Some correlations • Pipelined
• Correlations • Sim ple Reconstruction • Calibrated Data • Separated vertex • Physics Algorithms • Physics Objects e, P, j, W, ET
Global L2
/'$4
L1CTT SMT
L2STT
Muon
L1 Muon
FPD
L1FPD
L2 Muon L2FW: Combined objects ( e, µ ,j )
L1FW: towers, tracks, correlations
Level 3
7DSH
• Entire Trigger Menu configurable and downloadable at Run start • Trigger Meisters provide trigger lists for the experiment by collecting trigger requests from all physics groups in the Trigger Board • All past and present trigger lists are stored and maintained in the dedicated trigger database
80
Peak Mass: 90.8 +- 0.2 GeV Width: 3.6 +- 0.2 GeV
60
40
# evts
Number of Entries: 604
N events / 100 MeV/c 2
Events / 2 GeV
D0 Run II Preliminary 100
60
10
50
DØ Run 2 Preliminary
3
D ∅ Run 2 Preliminary
40
J/ ψ → e +e -
10
2
30
10
20
20
10 0 0
20
40
60
80 100 120 Di-Electron Mass (GeV)
0 1
1
2
3
4
5
6
7
2
8
mass (GeV/c )
0
100
200
300
400 500 Missing E T (GeV)
Ì
!" # $ % & ' #
( ) * +, ,-
. '/ 01 '/ 2 ! 3 4 ! 24!3 5 6 7 4 6 7 48
908
(YHQWV0H9
L. Babukhadia
J/ Ψ invariant mass
'5XQ3UHOLPLQDU\ S P !*H9
140
7
120
track p T>2.0 GeV/c 2 vertex χ <10
100
80
60
40
20
Chi2 / ndf = 43.84 / 44 p0 = 115.8 ± 6.075 p1 = 3.071 ± 0.0001441 p2 = 0.07981 ± 5.731e-05 p3 = -44.4 ± 341.5 p4 = 99.51 ± 317.7 p5 = 0.1129 ± 0.5466
0 2
2.2 2.4 2.6 2.8
0PP *H9
3
3.2 3.4 3.6 3.8 24 GeV/c
Ì
Æ
!"
Æ Ì ! "# $ % Æ " Ì & #' () % " * Ì & #+ () % Ì , - .
% 4
2 33 01 % % 5 % 6Ì % 7% % % % 7 7 8 5
%
% - % % 09: % ; % * <=
# / 01 ; % ' ( (% >%
/ 01 2 33 /
% %