Yusuf Oguzhan GUNAYDIN The University of Iowa Department of Physics & Astronomy

1. 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

2. FNAL Main Injector Particle Production Experiment Hall

3. Multi Wire Proportional Chamber (MWPC)

4. Cathode Plane y l x s Anode Wires Cathode Plane • Operating Principles - Two Cathode planes sandwich anode wire plane - l = (3 or 4) x s

5. - Magic Gas & Ionization - Negative applied voltage - Electric Field - Field lines

6. DC1 DC2 DC3 DC4 ROS IE E M C A L T O F BC1 BC2 BC3 Joly Green Giant DIFF CKOV Beam RICH HCAL TPC Beam Ckov1 Beam Ckov2 DC6 (MWPC) DC5 (MWPC) • Iowa Multi Wire Proportional Chambers in Fermilab Experiment E907 - Two Iowa MWPCs each side of the RICH - 2x2 m2

7. U Plane V Plane Y Plane X Plane • Anode Wire Planes - X vertically - Y horizontally - U and V slanted ±28.070

8. 11 Stesalit Frames Mylar Cover Preamplifiers Iron Frame

9. Gas Mixture of MWPCs - Noble gases – Low electric field - The suitable gas- Argon- Polyatomic gases - 80 % Argon and 20 % CO2

10. RMH System RMH Module Crate Encoder Control Unit

11. -CAMAC Package Branch Receivers System Encoder Interface

12. - A sample of preamplifier 32 wire channels

13. Crate Encoder Control Unit RMH Modules RMH Crate 1 MWPC Branch Terminator Preamplifiers RMH Modules RMH Cables RMH Crate 2 Regular CAMAC Crate Additional Crates System Encoder Interface Branch Receiver RMH System Layout-1

14. RMH Modules RMH System Layout-2 Control Unit Crate encoder RMH Modules Branch Receivers System Encoder Interface RMH Modules RMH Modules

15. 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

16. Applied voltage is 2600V Some preamp slots are loosen Incorrect wire mapping Correct wire mapping is in the Appendix

17. Physics Potential of the FNAL MIPP experiment E907

18. 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

19. DC1 DC2 DC3 DC4 ROS IE E M C A L T O F BC1 BC2 BC3 Joly Green Giant DIFF CKOV Beam RICH HCAL TPC Beam Ckov1 Beam Ckov2 DC6 (MWPC) DC5 (MWPC) • Physics Interest - Particle physics - Nuclear physics - Service measurements

20. Particle Physics - Unbiased high statistics data - Non-perturbative QCD hadron dynamics - Scaling laws of particles production - Investigating light meson spectroscopy . Pentaquarks . Glueballs

21. Nuclear Physics - Investigation strangeness production - Nuclear scaling - propagation of flavor through nuclei

22. Service Measurement - Atmospheric neutrinos - Improving shower model In MARS, Geant4 - Making measurements to control the near/far systematic

23. Exclusive Reactions (Final state’s ides are known) - Angular distributions - Correlation - Exchanged system

24. Some Exclusive Reactions

25. Yusuf Oguzhan Gunaydin Thank you for your patience