1. THE BRIEF HISTORY OF LuMo CONSTRUCTION FROM MIT TO HU OZGUR ATES HAMPTON UNIVERSITY OLYMPUS COLLABORATION MEETING 26-27 APRIL 2011

2. Luminosity Monitors: Telescopes Forward telescopes 12 o 2 tGEM telescopes, 1.2msr, 12 o, R=187/237/287cm, dR=50cm, 3 tracking planes TOF LEPTON PROTON LEPTON PROTON

3. 1. Handling The Olympus GEMs at MIT-BATES between June 6th-August 8th 2010 Received the total 51 GEMs come with 5 Batches Optically Inspected 100% of the GEMs @ MIT CCD Scanned 30% of the GEMs @ MIT HV-Tested 100% of the GEMs @ MIT Glued into the Frames 4 GEMs @ BATES

4. A DEFECTIVE GEM LAYER FROM CCD SCANNER

6. Bar Graphs of Inner(left) and Outer(right) Diameters of LUMI Foils

7. 7 2. Manufacturing The GEMs at HU-GEM LAB

8. Stretching and Gluing of GEM+MYLAR+HV Foils

9. Leakage Current Test using GEM2D Box

10. Readout Boards – Shortcuts and How To Fix Them... Up to 5 shorts per board possible Checked all boards with Ohmmeter for shorts Found between 0 and 7 (8?) per board, typically ~3 Verified under microscope and fixed them Currently 8 boards without any shorts

11. Readout Boards – Shortcuts and How To Fix Them... blown with current from a 9V battery

12. Readout Boards – Shortcuts and How To Fix Them...

13. scratched with knife

14. FIRST SIGNALS FROM GEMS (JUERGEN’s TALK)

15. SOLDERING PINS INTO THE GEM FRAMES

16. Gluing Process of The Chambers

23. PACKING THE CHAMBERS

24. The Status of The GEM Manufacturing Glued 9 GEM Chambers(6+3 Spares): -- 27 GEM Foils --18 Pressure(Mylar) Foils --9 High Voltage Foils --9 Readout Boards with NO Shorts --7 chambers checked with picoammeter. We shipped from HU and we received last week at here DESY!

25. LUMI Gas System Test Beam in May

26. Many configurations were simulated. Varied intrinsic res. and distance between tracking planes. 100 µm intrinsic res. and 50 cm gap between Gem1/2 and Gem2/3 show the optimum performance. 26 MC Simulation of the GEMs Design Parameters: Resolutions Left Sec. RESOLUTIONS Proton DeltaZ Electron DeltaZ Proton Del.Theta Electron Del.Theta Proton DeltaPhi Electron DeltaPhi Proton DeltaP Electron DeltaP 100mic./50cm LUMI + MWPC 1.60 mm1.18 cm0.52 Deg.0.09 Deg.0.52 Deg.0.22 Deg.20 MeV59 MeV

27. LUMI MS STUDIES --MC runs now on bird@DESY, HUPPCF@HU, blaster@KPHMZ --We have ROOT files on disk with XY beam offsets --We will analyze those runs soon (NAS is ready now) ***Beam offsets were -1, -0.75, -0.5, -0.25, 0., +0.25, +0.5, +0.75, +1 mm.

28. Next Steps with the New MC Code: Study of systematic effects (beam offset, slope, width; etc.) (ONGOING) Simulations of acceptance and count rates Simulation of backgrounds 28