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IOWA MULTI WIRE PROPORTIONAL CHAMBER (MWPC) and PHYSICS POTENTIAL OF THE FERMILAB EXPERIMENT E907 (MIPP). Yusuf Oguzhan GUNAYDIN The University of Iowa Department of Physics & Astronomy. 15 July 2004. FNAL M ain I njector P article P roduction Experiment Hall. - PowerPoint PPT Presentation
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IOWA MULTI WIRE PROPORTIONAL CHAMBER (MWPC) and
PHYSICS POTENTIAL OF THE FERMILAB EXPERIMENT E907 (MIPP)
Yusuf Oguzhan GUNAYDIN
The University of Iowa
Department of Physics & Astronomy
15 July 2004
FNAL Main Injector Particle Production
Experiment Hall
Multi Wire Proportional Chamber (MWPC)
• Operating Principles - Two Cathode planes sandwich anode wire plane
- l = (3 or 4) x s
x
y
s
l
Cathode Plane
Cathode Plane
Anode Wires
- Magic Gas & Ionization- Negative applied voltage- Electric Field- Field lines
• Iowa Multi Wire Proportional Chambers in Fermilab Experiment E907
- Two Iowa MWPCs each side of the RICH
- 2x2 m2
BC1 BC2 BC3
Beam Ckov1 Beam Ckov2
TPC
Joly
Green
Giant
DC1 DC2DC3 DC4
DIFFCKOV
ROSIE
RICH
DC6 (MWPC)DC5 (MWPC)
EMCAL
HCALBeam
TOF
• Anode Wire Planes
- X vertically
- Y horizontally
- U and V slanted ±28.070
X Plane
U Plane
V Plane
Y Plane
11 Stesalit Frames
Preamplifiers
Iron Frame
Mylar Cover
• Gas Mixture of MWPCs
- Noble gases – Low electric field
- The suitable gas- Argon- Polyatomic gases
- 80 % Argon and 20 % CO2
• RMH System
RMH Module Crate Encoder Control Unit
-CAMAC Package
Branch Receivers
System Encoder
Interface
- A sample of preamplifier
32 wire channels
MWPC
Additional Crates
RMH Crate 1
RMH Crate 2
Regular CAMAC Crate
RMH Modules
RMH Modules
RMH Cables
Branch Receiver
System Encoder
Interface
Control UnitCrate Encoder
Preamplifiers
Branch Terminator
RMH System Layout-1
Branch Receivers
System Encoder
Interface
RMH System Layout-2
RMH Modules
RMH Modules
RMH Modules
RMH Modules
Crate encoder
Control Unit
• Efficiency of MWPC - The number of electron-ion pairs . The width of the gap
. The pressure of the gas
. The amount of electronegative gas
. The dE/dx of the fill gas
. The threshold set on the electronics
. The applied high voltage
. Gate width on the read out
Applied voltage is 2600V
Some preamp slots are loosen
Incorrect wire mapping
Correct wire mapping is in the Appendix
Physics Potential of the FNAL MIPP experiment
E907
- 120 Gev Main Injector Primary protons
- Secondary beams of л±, K±, p± particles
- TPC can measure momenta of all particles
- With ToF, DIFF CHOV, and RICH, MIPP can analyze the charged particle
- Some limited neutrons and photons can be measured
- MIPP supplies high statistics
• Physics Interest - Particle physics
- Nuclear physics
- Service measurements
BC1 BC2 BC3
Beam Ckov1 Beam Ckov2
TPC
Joly
Green
Giant
DC1 DC2DC3 DC4
DIFFCKOV
ROSIE
RICH
DC6 (MWPC)DC5 (MWPC)
EMCAL
HCALBeam
TOF
• Particle Physics - Unbiased high statistics data
- Non-perturbative QCD hadron dynamics
- Scaling laws of particles production
- Investigating light meson spectroscopy
. Pentaquarks
. Glueballs
• Nuclear Physics
- Investigation strangeness production
- Nuclear scaling
- propagation of flavor through nuclei
• Service Measurement - Atmospheric neutrinos
- Improving shower model In MARS, Geant4
- Making measurements to control the near/far systematic
• Exclusive Reactions (Final state’s ides are known)
- Angular distributions
- Correlation
- Exchanged system
0
Strangeness production
StrangenessandBaryon number production
Chargeexchangeand resonanceproduction
Diffaction,strangeness production
DiffractiveDissociation,Pomero
p
p pp
p
p p pp
p p pp
0
ns
Classicρexchangep n
Some Exclusive Reactions
Yusuf Oguzhan Gunaydin
Thank you for
your patience