1. He3 +Au run
Y. Akiba

2. Viscous Hydrodynamics + Cascade Similar Flow Fingerprint? Small QGP?
Slide from J.Nagle at PAC
Viscous Hydrodynamics + Cascade
Similar Flow Fingerprint?
Small QGP?
ALICE Experiment
LHC
PHENIX
RHIC
arXiv:

3. Why He3?
He3 Au
LHC p+Pb; RHIC d+Au results suggests formation of small QGP in p+A and d+A collisions. Large e2 in central d+Au can explain a large v2.
Central He3+Au collison can make a small system with large e3
Small system with large e3 is sensitive to medium property such as h/s
Npart in central He3+Au (Npart~40) is similar to that in 50-60% central Au+Au collisions where significant v2 and v3 are observed.
Energy density in central He3+Au is higher than peripheral AuAu.

4. Initial geometry in pA,dA and He3A
Slide from R. Romatschke’s talk in QM2014
Initial geometry in pA,dA and He3A
P. Romatschke, CU Boulder

5. Hydro + Cascade He3+Au Slide from R. Romatschke’s talk in QM2014
v2 (1% central)
v2 (5% central)
v3 (1% central)
v3 (5% central)
8/23/2019

6. Centrality trigger
The main interest of He3+Au run is to measure v2/v3 in central collisions.
To select those interesting event, multiplicity trigger in BBC is to be implemented. (John Jajoie)
For data analysis, VTX stand-alone tracking is important to measure v2 and v3 in a wide eta range.