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- 2009-08-1Gene,
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- S&C
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- meeting
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...
...
...
...
...
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- ,
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- in
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- particular
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- slides
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- 6,7...
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- show
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- pp
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- 500
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- from
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- 2009
- Rosi computed beam line constrain for pp500 data in run 2009
BFC options to print tracks needed for the beam line codeCode Block root4star -b -q bfc.C'(1,10,"B2009.2,VtxSeedCalG,emcDY2,ITTF,VFPPVnoCTB,BEmcChkStat,beamLine,Corr4,OSpaceZ2,OGridLeak3D -dstout -evout " ,"/star/data03/daq/2009/Weve/sampler100X/st_W_10079002_raw_4180001.daq")' > & LogB
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- Tonko:
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- document
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- describing
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- my
...
...
...
...
...
...
...
...
- tail
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- suppression.
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Local
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- copy:
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PDF
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name
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Tuning
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ALTRO's
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Tail
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Cancellat....pdf
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- Gene:
...
...
...
...
...
...
...
- ,
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- i.e.
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- dependence
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- of
...
- ]cluster
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- time
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- determination
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- on
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- cluster
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- charge,
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- day
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- ~180,
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- low
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- lumi
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- pp2pp
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- Gene
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- uploaded
...
- Field
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- cage
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- shorts
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- in
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- the
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- DB,
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- September
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- 22,
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- 8
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- pm,
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- tpc-hn
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- TPC
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- "prompt"
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- hits
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- and
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- reality
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- check
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- -
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- long
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- list
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- of
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- tasks
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- to
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- make
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- use
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- of
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- them
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Subject:
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- Re:
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- TPC
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- "prompt"
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- hits
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- and
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- reality
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- check
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Date:
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- September
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- 30,
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- 2009
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- 2:32:04
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- PM
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- EDT
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To:
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- phana-hn@orion.star.bnl.gov
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- Carl
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- explains:
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- I
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- believe
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- these
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- prompt
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- hits
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- have
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- the
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- potential
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- to
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- be
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- very
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- useful
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- in
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separating
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- real
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- tracks
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- that
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- punch
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- out
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- the
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- ends
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- of
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- the
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- TPC
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- from
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pile-up
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- tracks.
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- As
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- such,
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- they
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- could
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- be
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- quite
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- useful
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- for
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- vertex
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- finding.
...
-
- In contrast,
-
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- you
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- are
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- asking
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- about
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- "really
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- short
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- tracks".
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- The
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matching
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- efficiency
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- for
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- those
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- is
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- going
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- to
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- be
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- quite
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- low.
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- Only
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- ~20%
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- of
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the
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- inner
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- sector
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- pad
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- plane
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- area
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- is
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- active.
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- Particles
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- that
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- punch
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- out
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through
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- the
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- other
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- ~80%
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- of
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- the
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- MWPC
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- area
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- will
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- leave
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- "invisibly".
...
- on
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- the
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- topic
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- of
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- charge
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- sign
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- discrimination
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If
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- we
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- want
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- charge
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- sign
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- to
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- be
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- good
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- up
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- to
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- 50
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- GeV,
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- then
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- we
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- need
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- to
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- keep
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- primary
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- track
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- sagitta
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- errors
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- below
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- 1.2
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- mm.
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- This
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- will
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- have
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- two
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- additive
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- components:
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- systematic
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- error
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- in
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- the
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- sagitta
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- (e.g.
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- the
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- TPC
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- alignment
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- is
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- pervasively
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- slightly
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- wrong
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- or
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- the
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- SpaceCharge
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- correction
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- is
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- always
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- slightly
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- low)
...
- plus
...
- resolution
...
- of
...
- the
...
- sagitta
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- (e.g.
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- variance
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- in
...
- alignment
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- from
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- sector-to-sector
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- or
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- in
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- the
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- SpaceCharge
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- correction
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- event-to-event,
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- combined
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- with
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- the
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- intrinsic
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- resolution
...
- of
...
- the
...
- detector).
...
- If
...
- we
...
- want
...
- something
...
- like
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- 95%
...
- confidence,
...
- then
...
- we
...
- should
...
- plan
...
- on
...
- being
...
- within
...
- 2
...
- sigma.
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- So:
...
sagitta
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systematic
...
error
...
+
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2
...
*
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sagitta
...
resolution
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<
...
1.2mm
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In
...
the
...
past,
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we've
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obtained
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a
...
resolution
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of
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about
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250
...
microns
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on
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the
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sagitta
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of
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primary
...
tracks.
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If
...
we
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can
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achieve
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400
...
micron
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resolution,
...
then
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we
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need
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to
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get
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the
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systematic
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errors
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below
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400
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microns.
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Thanks,-Gene
...
...
TpcRS - new slow simu for TPX
Jan:I
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make
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observation
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TpcRS
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crashes
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on
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M-C
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events
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generated
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with
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geometry
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2008.
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Although
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real
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TPX
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electronic
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was
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installed
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in
...
year
...
2009
...
people
...
have
...
many
...
old
...
(expensive
...
to
...
produce)
...
simulations
...
which
...
they
...
may
...
want
...
to
...
still
...
use
...
to
...
estimate
...
performance
...
in
...
the
...
future
...
years.
...
Would
...
be
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the
...
best
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if
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TpcRS
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is
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able
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to
...
process
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old
...
.fzd
...
fils
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and
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has
...
settings
...
appropriate
...
to
...
different
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ASIC
...
setup.
...
Yuri:
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ASIC
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means
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old
...
TPC
...
electronics.
...
ALTRO
...
is
...
new
...
(TPX)
...
electronics.
...
These
...
are
...
two
...
completely
...
different
...
approaches
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(analog
...
and
...
digital
...
fitering).
...
The
...
main
...
goal
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for
...
TpcRS
...
is
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TPX.
...
There
...
are
...
a
...
lot
...
of
...
DB
...
parameters
...
which
...
are
...
associated
...
with
...
y2009
...
time
...
stamps.
...
When
...
you
...
run
...
TpcRS
...
for
...
y2008
...
it
...
uses
...
23
...
TPC
...
+
...
1TPX
...
configuration.
...
TPC
...
has
...
not
...
been
...
tuned
...
enough.
...
If
...
you
...
like
...
to
...
do
...
this
...
then
...
I
...
give
...
you
...
complete
...
set
...
of
...
instructions
...
for
...
that.
...
...
SC & GL calibration progress
...
Yuri improved TpcRS so embedding is possible slides
...
Helen studied PT resolution of TPC using W electrons : [ Helen study | http://rnc.lbl.gov/wiki/index.php/High_pt_tracks_from_the_W_analysis]
...
...
Improvement in tracking 'CA'-seed
...
finder,
...
presented
...
at
...
S&C
...
on
...
August
...
25,
...
2010
...
by
...
...
...