timewalk and drift time correction...timewalk and drift time correction 7r7r iv hfrqgk lw >î qv...

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Timewalk and drift time correction Each Row is normalised to its peak value If the first 2 (or more) hits have the same timestamp, I take the next to highest ToT value as the ToT of the second hit Entry- and exit-pixel distributions clearly visible Needs timewalk- and drift-time correction Only needs timewalk correction

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Page 1: Timewalk and drift time correction...Timewalk and drift time correction 7R7R IV HFRQGK LW >î QV @ QV @ î > 7LPHE HWZHHQI LUVWW ZRK LWVYVVHFRQGK LW7R7 SODQH • Each Row is normalised

Timewalk and drift time correction

• Each Row is normalised to its peak value• If the first 2 (or more) hits have the same

timestamp, I take the next to highest ToTvalue as the ToT of the second hit

• Entry- and exit-pixel distributions clearly visible

Needs timewalk- and drift-time correction

Only needs timewalk correction

Page 2: Timewalk and drift time correction...Timewalk and drift time correction 7R7R IV HFRQGK LW >î QV @ QV @ î > 7LPHE HWZHHQI LUVWW ZRK LWVYVVHFRQGK LW7R7 SODQH • Each Row is normalised
Page 3: Timewalk and drift time correction...Timewalk and drift time correction 7R7R IV HFRQGK LW >î QV @ QV @ î > 7LPHE HWZHHQI LUVWW ZRK LWVYVVHFRQGK LW7R7 SODQH • Each Row is normalised

• Only select clusters of three with hits in the top two pixels of a super pixel

• Top two pixels of a super pixel must have equal ToA and fToA

• Third hit must have ToT == 1

• Only select clusters of two with hits in the top two pixels of a super pixel

• Top two pixels of a super pixel must have equal ToA and fToA

Non-uniform ftoa distribution