Recent Result of TOF Monitor System

Qian LIU

Outline Ref-PMT Barrel TOF End cap TOF

Ref-PMT

Barrel Single TOF

Barrel TOF Q

Barrel TOF Q mean

Barrel TOF T

Barrel TOF T sigma

Barrel TOF T sigma after Q-T

The two dead east TOF counters have been fixed.

Q mean is lower: BIW36 (808), BIW48 (603), BIW49 (761), BIW83 (952), BOE66 (879)

Q mean is higher: BIW6(2520) , BOW7(2604)

T sigma is higher: BOE66(35)

End cap single one

End cap Q

Total 4 dead Channels!Pre-amp?

End cap Q mean

End cap T

End cap T sigma

End cap T sigma after Q-T

Discussion Tuning the End cap HV. Regular run (including in the BESIII

calibration run?) Temperate data base access. HV data base access.

Thanks!