Sphenix-tpc-l mailing list

[Takao Sakaguchi <takao AT bnl.gov>]

Dear All,

 As agreed at the L2/L3 meeting this afternoon, I drafted abstracts
for QM and DNP on the TPC readout electronics.

 Comments are most welcome.

Takao
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QM poster: Readout electronics for the sPHENIX Time Projection Chamber

 One of the major physics goals of the sPHENIX experiment at RHIC
is to major the Upsilon states with 100MeV mass resolution. In order to
achieve this resolution, a Time Projection Chamber (TPC) was proposed
for momentum measurements of electrons and hadrons. The TPC does
not have a gating grid similarly to the ALICE TPC case and therefore
capable for handing the collision rate of up to a few hundreds KHz.
In turn, the charge has to be readout continuously. The readout
electronics was newly designed to meet this requirement. The signal is
readout by 624 Frontend cards that have 8 SAMPA v5 chips, the new
version of the one employed for ALICE TPC, and sent to a backend
electronics, FELIX PCI card, designed for ATLAS experiment. The data
rate from the whole TPC may reach as much as 1.4Tbps. We will show
the readout scheme for the TPC and the performance from the prototype
boards as well as the data reduction scheme.

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DNP talk (poster?): Development of the readout electronics for the
sPHENIX Time Projection Chamber

 The sPHENIX experiment at RHIC is the repurposed experiment of
the PHENIX experiment that ended data taking in 2016. The sPHENIX
is aiming for measuring Jets and Quarkonia at RHIC energy where
the strongly coupled Quark Gluon Plasma (QGP) is formed. In order
to separate Upsilon states, a tracking device that can handle a few
hundreds KHz collisions and keep a 100MeV mass resolution.
Therefore, we have decided to build a a time projection chamber
without gating grid. The signal charge has to be readout continuously
which required a new readout electronics. In the new readout scheme,
the signal is readout by 624 Frontend cards that have 8 SAMPA v5
chips, the new version of the one employed for ALICE TPC, and
sent to a backend electronics, FELIX PCI card, designed for ATLAS
experiment. The data rate from the whole TPC may reach as much as
1.4Tbps. We will show the readout scheme for the TPC and the
performance from the prototype boards.

----------------------