Speaker
Martin Purschke
(BROOKHAVEN NATIONAL LABORATORY)
Description
The PHENIX collaboration has proposed a major upgrade of the exisiting
experiment at the Relativistic Heavy Ion Collider for the 2020-2022
time frame. The new experiment, code-named "sPHENIX", is built
around the former BaBar magnet, and consists of tracking systems and 3
calorimeters: an electromagnetic calorimeter based on scintillating
fibers embedded in a tungsten-expoxy matrix, and two
steel-scintillator hadronic calorimeters, one inside the magnetic
field, and one outside. The BaBar magnet has an inner diameter of
280cm and a length of 385cm, which translates into a pseudorapidity
coverage of $|\eta|<1.0$ and a most extreme angle of incidence of
$65^{\circ}$ with respect to a vector pointing straight to the beam
line. Starting from an optimally projective design with double-tapered
EmCal modules, which are extremely challenging to produce, we present
studies of various tilted calorimeter designs to find the best
tradeoff between the uniformity of the sampling fraction, avoidance of
"channeling" paths for particles, and project costs. We will show
the results from simulations exploring the parameters governing the
achievable energy resolutions and the detector complexity for the
three calorimeters.
| On behalf of collaboration: | PHENIX |
|---|
Primary author
Martin Purschke
(BROOKHAVEN NATIONAL LABORATORY)
