sPHENIX is a new detector at RHIC.

[Rosi Reed <rosijreed AT lehigh.edu>]

Hello sPHENIX,

I will be giving a talk at WWND on the sEPD and the physics opportunities it allows.  I would appreciate any comments/suggestions on the abstract below.

Cheers,

Rosi

sPHENIX Event Plane Detector and its flow capabilities

The sPHENIX Event Plane Detector (sEPD) will be a new detector sub-system that will provide high precision measurements of the event plane and charged particle multiplicity in the forward region with 2 < |eta| < 5.  The sEPD comprises two scintillator disks with 12 azimuthal sectors, each with 31 segments. Each segment is a scintillator tile with an optical fiber embedded to extract the light signal, which is then read out via silicon photomultipliers, and sPHENIX electronics common to other subsystems.  Smaller QGP droplets, like those formed in proton-nucleus collisions, have become a major focus of the field in recent years.  It will be important to determine how large the droplet of matter has to be for jet quenching to occur.  The sEPD enables the measurement of jet $v_n$ in $p$+Au collisions where the presence of a jet can affect the experimental determination of the Event Plane (EP) by allowing an eta gap of more than 1.0 units of pseudo-rapidity.  In addition to jet $v_n$, the sEPD will allow more precise measurements of the elliptic flow in all collision systems as well as a plethora of other observables. This talk will discuss the design, progress of the construction and the physics processes that will be accessible due to this construction of this detector.

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Rosi Reed
RHIC/AGS UEC member
Associate Professor, Physics Department
Lehigh University
(610)758-3907
16 Memorial Drive East Office 406
Bethlehem, PA 18015
she/her/hers