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Tracker Definitions

Terminology	Description
double stack	two stacks separated by little distance.
layer	one stack.
pileup	occurrence of more than one proton-proton collision during a given time interval of interest. In general, the time interval of interest is a single bunch crossing; the "interesting" collision is usually the one with particles of largest transverse momenta, while the others are the "pileup" collisions. That is then the "in-time" pileup Notice that, due to buffering, collisions from both previous and future bunch crossings can contribute to a given interval of interest - that is then referred as "out-of-time" pileup.
stack	tuple of closely spaced sensors.
stack member	sensor of stack
stub	correlated pair of hits in stack. local stub: an object consisting of a set of hits consistent with high pT track. This is the type of object produced on-detector in order to reduce the data rate. global stub: a vector object consisting of a global position and global direction. This is the type of object produced off-detector for the purpose of Level-1 triggering.
threshold	selecting path by min number of stubs matched.
tracklet	matched pair of stubs.

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tecepe - 2014-07-29 --

trtomei - 2014-08-04

Comments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
PNG	360___a_stack.PNG	r1	manage	18.8 K	2014-08-04 - 19:47	UnknownUser	stack
PNG	a_stub.PNG	r1	manage	34.0 K	2014-08-04 - 20:43	UnknownUser
png	stack_members.png	r1	manage	21.1 K	2014-08-04 - 19:49	UnknownUser

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Topic revision: r4 - 2014-08-04 - trtomei

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