A pp2pp webpage under the control of Kin Yip

(back to Collaborators' files)

Here are some brief description for my past presentations in the pp2pp meetings, and also some notes on what has been done.

Aug. 27, 2008:

Make sense of the triggers in the run 9070016.ppt shows my much improved understandings of the triggers for the run 9070016.  PP2PP trigger.doc was the document that Eleanor Judd had used to write her trigger logics in VHDL.  9070016-online.pdf is the specially-made online monitoring report for every event of the run 9070016 (on Mar. 10, 2008) in which p. 9 contains the plot of bunch nos.

Aug. 13, 2008:

Trigger Check for the Run 9070016.ppt shows my works done to check the consistency of the trigger information in data.

May 1, 2008:

inputs_20m_installed_noDisp (RPminx = RPminy = 10 mm) xy1.gif  xy2.gif  acceptance_xi.gif  Mx.gif  acceptance_Mx.gif  Tranjectory file (ps) : Input file, simulation plots and the trajectory file corresponding to the so-called "noDisp" lattice/ramp.

inputs_20m_installed  (RPminx = 7 mm; RPminy = 10 mm) xy1.gif  xy2.gif  acceptance_xi.gif  Mx.gif  acceptance_Mx.gif  Tranjectory file (ps) : Input file, simulation plots and the trajectory file corresponding to the actual lattice/ramp that we are now using in RHIC.

inputs_20m_proposal xy1.gif  xy2.gif  acceptance_xi.gif  Mx.gif  acceptance_Mx.gif : Input file used for the simulation used in the 2005 pp2pp/STAR proposal and the simulation plots.

Romania.ppt : Talk to be given in the "Low x" meeting in Sinaia, Romania, July 2, 2005.

A series of plots including acceptances for  b* = 20 m shown on June 2, 2005 :

xy1.gif xy2.gif xi_t.gif acceptance_xi.gif Mx.gif acceptance_Mx.gif trajectory_20m.eps 

Romans are placed exactly where a₁₁ = 0 for horizontal and a₃₃ = 0.

pp2pp June 1, 2005.ppt : shows the acceptance plots for inelastic scattering for b* = 1 m.

pp2pp May 25, 2005.ppt : shows a first set of plots for inelastic scattering with  0.003< -t <0.04  and  0.01< dp/p <0.05.

pp2pp 58cm acceptance.ppt (May 4, 2005) :

• The 1st slide informs the audience about the Beam Expt. happend on Apr. 28, 2005.

• The 2nd/3rd slides plot the acceptances for Arm-A and Arm-B if we shift the RP's from (~57 m,~60 m) to (55 m, 58 m).

pp2pp zvertex and simulation Nov. 10, 2004.ppt :

    This presentation includes fitting a z vertex distribution in data in which a Gaussian vertex distribution (due to beam collision) is convoluted with another Gaussian due to timing resolution.   A "cut" or border is a parameter in the fit which matches well with the 10 nm trigger cut.  The fitting results were put in the simulation and comparisons were made for acceptances before and after the changes.

Per request after the meeting, STANDARD acceptances.pdf  are the fitting curves and the parameters when y_min's (lower ends of the vertical aperture) are kept at their nominal positions (ie., including the 1st 2 silicon strips).

pp2pp Simulation Status July 29, 2004.ppt :

    This presentation shows the fitting of the aceptances using a combination of Erf functions as suggested by Bob Chrien.   It works for one side of the acceptance curves but not on both.  But this is probably sufficient for our purpose.  Here, the y_min's (lower ends of the vertical aperture) have been raised to +0.2mm so as to ignore the first 2 silicon strips.  Fitting parameters can be found in those powerpoint transparencies if one would like to make use of them.

pp2pp Simulation Status July 21, 2004.ppt : Just contains acceptance fitting curves using polynomials (with high orders).

pp2pp Simulation Status July 14, 2004.ppt :

    In this presentation, I compared the acceptances if we shift the z vertex position by +1 m or -1m from the nominal position -5 cm.  So, the 3 combinations of vertex positions are -105 cm, -5 cm and 95 cm.

    On the 2nd slide, "Vz = 0" actually means that I changed the vertex z nominal position to 0.  So, the 3 combinations of vertex z positions in this case are -100 cm, 0 and 100 cm.  I've also changed the incident θ angles. What makes a big difference is the transverse positions (Vx, Vy).

    !!!!!!! On the 4-6th slides, in addition to the vertical apertures (ymin), the difference of acceptances in Arm A and Arm B, is mainly due to the non-centered vertex positions.

pp2pp Simulation Status June 30, 2004.ppt : (You may need to click "Page-Up"/"Page-Down" on your keyboard to all the points of discussion on the 1st powerpoint page.)

    This presentation includes acceptances for various configurations (Arm A versus Arm B, various φ cuts and positions of roman pots at 57 m and 60 m).  On the 5th and 6th transparencies, I show the comparisons between various transport matrices provided by Steve Tepikian (plus Todd Satogata & Johannes van Zeijts). 

"Standard" transport matrices are here :    Standard-blue.dat and Standard-yellow.dat which I have extracted from rhic-blue-May-21-2003-fill3756.dat and rhic-yellow-May-21-2003-fill3756.dat in Steve's webpage.

"Todd's" transport matrices  ( Todd-blue.dat and Todd-yellow.dat ) were obtained after Todd combined his BPM measurements at the Blue ring and his model.  Some matrix elements here are exactly the same as the "Standard" because Todd only provided part of the matrix elements.

"Steve_J" transport matrices can be found here : Steve_J-blue.dat and Steve_J-yellow.dat which I have extracted from tmatrix-blue-0p28trp.txt and tmatrix-yellow-0p28trp.txt in Steve's webpage.

"Steve_T" transport matrices can be found here : Steve_T-blue.dat and Steve_T-yellow.dat which I have extracted from tmatrix-blue-0p67trp.txt and tmatrix-yellow-0p67trp.txt in Steve's webpage.