Report%20on%20T1%20and%20T2%20DAQ

1
Report on T1 and T2 DAQ

• A.Asahara, H.Kubo, D.Nishida
• 5/July/2002 CANGAROO meeting

2
Status on T1 DAQ
7m
10m
History
VME ADC Installed
Linux based DAQ Installed
Took off
1.TDC trouble
1.Unstable of Power supply.
Cant read one or two TDC modules!
2.Tripped off VETO line.
2.ADC trouble
Fixed.
Cant read one or two ADC modules!
Inadequate capacity of power Supply ?
Line Oct 2000 Jul 2002 Capacity
5V 28.5A 28.3A 50A
12V 7.0A 7.8A 10A
-12V 9.9A 7.8A 10A
High capacity power supplies are getting ready
now.
3
Main CPUs for T2 and T3
DRC1
Live Time()
CPU Pen II 400MHz
Width 2u
Acceptable Trigger 390Hz _at_deadtime 20
VMIC-7740
CPU Pen III 800MHz
Width 1u
Acceptable Trigger 530Hz _at_deadtime 20
Trigger (Hz)
Software techniques for speed-up is
meaningless. You should wait for the progress of
Hardware!!
4
New TDC for T3
AMT (Atlas Muon TDC) LSI Chip Y.Arai et al. _at_KEK
V667 ATM-VME
KLOE Chip AMT-2
VME6U, width 2u Size VME6U, width 1u
128 of Ch 64
1ns Resolution 0.78ns
64us Range 50us
A24/32 D16 VME access A24/A32 D16/D32
\8,600 /ch Total \4500,000- Cost \4,500 /ch Total \2100,000-
Under development Final versions released in
the end of July.
Further information http//atlas.kek.jp/tdc/
5
R D
Compact PCI
Event Builder System
GIGA bit Ethernet