115 TGC EIFI Association probability and check of

1/15 TGC EIFI Association probability and check of chamber swap Susumu Oda ICEPP, University of Tokyo 2008/10/22

2/15 Used data • Run 91808, 91828, 91861, 91862, 91870 – 16 th and 17 th October, 2008 – All magnets were on. • TGCw. Beam stream

3/15 EIFI (A-side, current BC), BW hits (A-side) Projection point XY view Black : projections Red : projections with associated hit (distance<500 mm) Association probability XY view Association probability for FI is about 0. 6. Tracks were bended by magnet? EI is not at current BC?

4/15 EIFI (C-side, current BC), BW hits (A-side) Projection point XY view Black : projections Red : projections with associated hit (distance<1000 mm) Association probability XY view

5/15 EIFI (C-side, current BC), BW hits (C-side) Projection point XY view Black : projections Red : projections with associated hit (distance<500 mm) Association probability XY view Association probability for FI is about 0. 6. Tracks were bended by magnet? EI is not at current BC?

6/15 EIFI (A-side, current BC), BW hits (C-side) Projection point XY view Black : projections Red : projections with associated hit (distance<1000 mm) Association probability XY view

7/15 EIFI (A-side, previous BC), BW hits (A-side) Projection point XY view Black : projections Red : projections with associated hit (distance<500 mm) Association probability XY view

8/15 EIFI (C-side, previous BC), BW hits (A-side) Projection point XY view Black : projections Red : projections with associated hit (distance<1000 mm) Association probability XY view

9/15 EIFI (C-side, previous BC), BW hits (C-side) Projection point XY view Black : projections Red : projections with associated hit (distance<500 mm) Association probability XY view

10/15 EIFI (A-side, previous BC), BW hits (C-side) Projection point XY view Black : projections Red : projections with associated hit (distance<1000 mm) Association probability XY view

11/15 EIFI (A-side, next BC), BW hits (A-side) Projection point XY view Black : projections Red : projections with associated hit (distance<500 mm) Association probability XY view

12/15 EIFI (C-side, next BC), BW hits (A-side) Projection point XY view Black : projections Red : projections with associated hit (distance<1000 mm) Association probability XY view

13/15 EIFI (C-side, next BC), BW hits (C-side) Projection point XY view Black : projections Red : projections with associated hit (distance<500 mm) Association probability XY view

14/15 EIFI (A-side, next BC), BW hits (C-side) Projection point XY view Black : projections Red : projections with associated hit (distance<1000 mm) Association probability XY view

15/15 Check of chamber swap X: hit chamber phi (all 3 BCs), Y: phi of projection point (EI: 4. 5 m<Rproj<7 m, FI: 2 m<Rproj<4. 5 m) Chamber swap is not seen. +p BW hits (A-side) SW hits (C-side) BW hits (C-side) SW hits (A-side) EI -p FI 1 24 might be due to cosmic showers