Spin PWG

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Preliminary Presentation (8/27/09)

The link below has the presentation for preliminary cross section result.

Cockcroft-Walton HV system

Speaker : Leonard Eun ( PSU )


Talk time : 11:20, Duration : 00:20

FHC transverse study summary

 

     I used the Zoffset for FHC is 850cm and 948cm.

Linearity Check in fixed ecalgeo.g, take II

Abstract:  The EEMC geometry (ecalgeo.g) has been modified to remove a bug which resulted in approximately 1 radiation length of lead being inserted at the shower-maximum depth.  In this blog entry, the response of the modified geometry to various particles is determined over a range in energy from 0.5 to 200 GeV.  For photons we find that the linearity of the simulated EEMC sampling fraction is good to better than 1% over the range of energies studied.  Electrons above 2 GeV and neutral pions above 7 GeV exhibit similar linearities.

Linearity Check in fixed ecalgeo.g

Abstract:  A bug in the EEMC geometry has been identified.  Lines such as "Material Air isvol=0" have an unexpected (read undocumented) behavior: they create a new materi

2009.08.17 Direct photon - charge particle correlation paper GPC

proposed modification ot the title/abstract

Extracting gamma-jet cross section at forward rapidity from pp@200GeV collisions

Analysis overview

  1. Data samples, event selection, luminosity determination
  2. Isolating photon-jet events
    • Transverse shower shape analysis

FHC transverse profile study 6

 

 

FHC transverse profile study 5

 

FHC transverse profile study 4

 

FHC transverse profile study 3

Mistake in Endcap simulation (ecalgeo.g) causing iron to be inserted in air gaps!!

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Note added Aug.13

The latest study for FHC transverse profile

With the FHC Zoffset is 948 cm.

FHC transverse profile study 2

    With the FHC Zoffset is 948 cm.

FHC transverse profile study 2

FHC transverse profile study 2

EEMC simulation study: mockup of CDF testbeam experiment

Abstract:  The EEMC is similar in construction to the CDF endplug calorimeters.  CDF performed extensive testbeam measurements, demonstrating a linear (~1%) response for electrons between 10 and ~400 GeV, but only after making a correction for the preshower response.  In this study, we examine a slightly modified EEMC geometry in order to compare linearity achieved with the GEANT model of the EEMC with the CDF test setup.

Hadron shower transverse profile study for FHC

  I study the pion+, pion-, neutron, anti-neutron with 60 GeV energy transverse profile in FHC. The particles are shot from (0, 0, 0) to the center of FHC.

Hadron shower transverse profile study for FHC

       I study the pion+, pion-, neutron, anti-neutron with 60 GeV energy transverse profile in FHC.

photon energy deposit compare using different vertex

    I use two different vertexs to shoot photon with same energy through FMS and FHC, and study the differences between these two cases.