Event location and decay search in Switzerland Swiss group

RunReceiv ed StartedLocated in brick Dead mat. Passing through DS 2008 CC NC CC NC CC NC CC NC Total 1391 events have been scanned. Global status ( ) Normal bricks NO_COSMIC / BLACK_CS RunReceiv ed StartedLocated in brick Dead mat. Passing through DS 2008 CC NC CC NC CC NC CC NC Not started: High priority 31 (CC 28, NC 3)

Scanning coordination and shift organization in Bern (1) 3 Location speed in Jun-Aug was not stable – Manpower for scanning 3-4 physicists are reduced from scanning shifts. – 4 microscopes devoted to OPERA – July was vacation season in Switzerland – Main manpower was used for the test exposure at CERN in Aug (~1month) Thanks to Çağın Güneş (Ankara) for her contribution from July A new guy (non physicist) started to help data taking from 2weeks ago

New strategy – Prediction scan base -> volume scan base (location quality does not change) – Reduce human needed work even increasing scanning time – Reduce dead time of 4microscopes with plate changer (night, weekend)  may increase location speed factor ?? – Now trying to establish new way.. Scanning coordination and shift organization in Bern (2) CS prediction Volume scan Manual confirmation

One of bottle neck: problems on lateral marks for the already delivered bricks (some lines too near to edge or too thin) – Problems were investigated by BH people. – Please monitor regularly at GS. Examples Scanning coordination and shift organization in Bern (3)

Remote monitor for night and weekend Scanning coordination and shift organization in Bern (4) 4 microscopes can be remotely monitored by a person. Mark measurement can be helped manually by remote. An example automatic measurement failed (horizontal line near to edge and some scratches)

Event CC?

Possible gamma off vertex? (event ) A track with IP 338  m to 1ry. – p ~1GeV –  possibility not excluded. Under checking – Some other tracks not confirmed in vertex plate. – Efficiency is bad.. 1mm

Summary and prospect Location speed in Jun-Aug was not stable with manpower problem and lateral mark problem. Now trying to increase location speed by reducing dead time of microscopes.

BACKUP

Status 2010, Flag>=0 CCNCALL ECC arrived ECC scan ECC connected Dead material Passing through Located Bern JP

Status 2011, Flag>=0 CCNCALL ECC arrived ECC scan ECC connected Dead material 235 Passing through 325 Located Bern JP

priority event location status JP Bern Located 2010 CC NC CC NC CC NC0

Status 2011, 0mu prob>50% 1 st brick JP Bern <=May31<=Jun30<=Jul31All ECC arrived ECC scan ECC connected Dead material 1222 Passing through 0000 Located