status of the phobos experiment at rhic s.manly univ. of rochester ( for the phobos collaboration...
DESCRIPTION
ARGONNE NATIONAL LABORATORY Birger Back, Alan Wuosmaa BROOKHAVEN NATIONAL LABORATORY Mark Baker, Donald Barton, Alan Carroll, Stephen Gushue, George Heinzelman, Louis Remsberg, Andrei Sukhanov CASE-WESTERN RESERVE UNIVERSITY Cyrus Taylor INSTITUTE OF NUCLEAR PHYSICS, KRAKOW Wojciech Bogucki, Andrzej Budzanowski, Tomir Coghen, Kazimierz Galuszka, Jan Godlewski,Roman Holynski, Jerzy Kotula, Marian Lemler, Jerzy Michalowski, Andrzej Olszewski, Pawel Sawicki Marek Stodulski, Adam Trzupek, Barbara Wosiek, Krzysztof Wozniak, Pawel Zychowski JAGELLONIAN UNIVERSITY, KRAKOW Andrzej Bialas, Wieslaw Czyz, Kacper Zalewski MASSACHUSETTS INSTITUTE OF TECHNOLOGY Wit Busza*, Patrick Decowski, Kristjan Gulbrandsen, P. Haridas, Piotr Kulinich, Heinz Pernegger, Miro Plesko, Gunther Roland†, Leslie Rosenberg, Pradeep Sarin, Stephen Steadman, George Stephans, Gerrit van Nieuwenhuizen, Carla Vale, Robin Verdier, Bernard Wadsworth, Bolek Wyslouch‡ NATIONAL CENTRAL UNIVERSITY, TAIWAN Yuan-Hann Chang, Augustine Chen, Willis Lin UNIVERSITY OF ROCHESTER Adam Hayes, Erik Johnson, Steven Manly, Robert Pak, Inkyu Park, Frank Wolfs UNIVERSITY OF ILLINOIS AT CHICAGO Russell Betts, Clive Halliwell, Burt Holzman, Judith Katzy, Wojtek Kucewicz, Don McLeod, Rachid Nouicer, Michael Reuter UNIVERSITY OF MARYLAND Edmundo Garcia-Solis, Peter Stanskas, Alice Mignerey *Spokesperson †At Goethe University, Frankfurt ‡Project Manager Phobos CollaborationTRANSCRIPT
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Status of the Phobos experiment at RHIC
S.ManlyUniv. of Rochester
(http://maxwell.nsrl.rochester.edu/smanly/)
for the Phobos Collaboration
APS - AtlantaMarch 23, 1999
http://phobos-srv.lns.mit.edu
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ARGONNE NATIONAL LABORATORY
Birger Back, Alan Wuosmaa BROOKHAVEN NATIONAL LABORATORY
Mark Baker, Donald Barton, Alan Carroll, Stephen Gushue, George Heinzelman, Louis Remsberg, Andrei SukhanovCASE-WESTERN RESERVE UNIVERSITY
Cyrus TaylorINSTITUTE OF NUCLEAR PHYSICS, KRAKOW
Wojciech Bogucki , Andrzej Budzanowski, Tomir Coghen, Kazimierz Galuszka, Jan Godlewski ,Roman Holynski, Jerzy Kotula, Marian Lemler, Jerzy Michalowski, Andrzej Olszewski, Pawel Sawicki
Marek Stodulski, Adam Trzupek, Barbara Wosiek, Krzysztof Wozniak, Pawel ZychowskiJAGELLONIAN UNIVERSITY, KRAKOW
Andrzej Bialas, Wieslaw Czyz, Kacper ZalewskiMASSACHUSETTS INSTITUTE OF TECHNOLOGY
Wit Busza*, Patrick Decowski, Kristjan Gulbrandsen, P. Haridas, Piotr Kulinich, Heinz Pernegger, Miro Plesko, Gunther Roland†, Leslie Rosenberg, Pradeep Sarin, Stephen Steadman, George Stephans, Gerrit van Nieuwenhuizen,
Carla Vale, Robin Verdier, Bernard Wadsworth, Bolek Wyslouch‡NATIONAL CENTRAL UNIVERSITY, TAIWAN
Yuan-Hann Chang, Augustine Chen, Willis LinUNIVERSITY OF ROCHESTER
Adam Hayes, Erik Johnson, Steven Manly, Robert Pak, Inkyu Park, Frank WolfsUNIVERSITY OF ILLINOIS AT CHICAGO
Russell Betts, Clive Halliwell, Burt Holzman, Judith Katzy, Wojtek Kucewicz, Don McLeod, Rachid Nouicer, Michael Reuter
UNIVERSITY OF MARYLANDEdmundo Garcia-Solis, Peter Stanskas, Alice Mignerey
*Spokesperson†At Goethe University, Frankfurt‡Project Manager
Phobos CollaborationPhobos Collaboration
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4 detector measuring charged particle multiplicity and d N/dd
multiparticle spectrometer covers 1% solid angle at midrapidity with low Pt threshold and good particle identification
time of flightmultiplicitydetectors
spectrometer
magnet
Two detectors:
2
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Silicon detector schema
+HV
p+ Implant
n+
Polysilicon Drain Resistor
Dielectric 1
bias bussignal lines
Dielectric 2 vias metal 1metal 1metal 2metal 2
Primary detector technology
Silicon strips and pads300 microns
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-0.5
5 m
-5.0
4 m
-2.3
4 m
-1.1
3 m
0.5
5 m
1.1
3 m
2.3
4 m
5.0
4 m
z
• 85% of 4 covered• Charged part. multiplicity d2N/dd ( is azimuthal angle to beam) and • Distinguish multiple hits by the energy deposition
Multiplicity array
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ddM
Multiplicity determination (event-by-event)
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Beam
z
12.5 cm -12.5 cm
11 cm
5.5 cm
x
The vertex detector
Vertex detector
Octagonmultiplicity detector
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Two-arm multiparticle Spectrometer100 MeV/c1 GeV/c
100 MeV/c+
-
adjustable separation
-
2 Tesla conventional magnet
low field region helps with pattern recognition
Particle ID via dE/dx
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Spectrometer performance
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Spectrometer physics
Pt spectra
correlations
phi mass, width
particle ratios
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FacilitiesCounting house
Holes thru berm for cables
Cable trays
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magnet
Danfysik
AGS
RHIC!!
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Phobos Sensor Production
NCU Taiwan:Production &Pre-Testing
MIT and UIC: Testing
Spectrometer
Vertex and Multiplicity
DHL
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Silicon detector assembly and testing
Clean Rooms
Probe Stations
Inspection stationsHughes 2470-V bonder
Gluing Station
Si detectors mounted on spectrometer
cooling/support frame
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Trigger Counters
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Time-of-flight system
BC-404 fast plastic from Bicron
Hamamatsu R5900-00-M4MOD 12 stage multi-anode PMTs
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Si Bias
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RIN-T (2 Slots)
PowerPC 200 MHz32 MB RAM
PowerPC 200 MHz32 MB RAM
Mercury™ RACEway™ System
A
B
C
D
ILK 8 Mercury Backplane ( 8 Slots - only 3 are shown here)
Standard VME Backplane
MVME 2604PowerPC withVxWorks 200 MHz32 MB RAM
To Event Builderover Ethernet
MCH6
A
B
C
D ROU-T (2 Slots)
PowerPC 200 MHz32 MB RAM
PowerPC 200 MHz32 MB RAM
MCH6
0 21
MCH6
A
B
C
D
PowerPC 200 MHz32 MB RAM
PowerPC 200 MHz32 MB RAM
PowerPC 75032MB DRAM
1MB SRAM L2 Cache32kB L1 Cache
FPDP
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Event Builder
MV
ME
260
4M
VM
E 2
306
MV
ME
230
6
GigaEthernet to RCF
Gig
aEth
erne
t
CPUCPUCPU
Int D
iscs
Tape
Ext
Dis
cs
Fast Ethernet
Trigger VME
MV
ME
260
4Slow Control VMEFa
stE
ther
net
SUN HPC 3000
LAN
Trig
Inte
rface
Trig
Inte
rface
TOF FASTBUS
ADC TDC
Trig
AD
CTr
ig T
DC
SFI340
Trig
Sup
ervi
sor
Rac
eWay
Rac
eWay
Rac
eWay
Rac
eWay
Silicon VME
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Test beams
pion dE/dx
20000
21000
22000
23000
24000
25000
0.1 1 10
momentum [GeV/c]
peak
sig
nal [
e-h]
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Root/C++Software
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Miscellaneous Time-of-Flight Walls
Ring Detectors
Spectrometer
Octagon and VertexDetector
Magnet
One spectrometer arm for year-one running
~20 silicon detectors (mostly multiplicity and vertex),DAQ, trigger, and parts of TOFinstalled for commissioning runthis summer
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conclusions
•PHOBOS is becoming a reality
•Significant parts of PHOBOS will be installed forcommissioning run.
•Expect to be ready for day-1 physics (except for acompleted second arm)