PHENIX Run 14 Report

KLAUS DEHMELTFOR THE PHENIX COLLABORATION

RHIC & AGS ANNUAL USER’S MEETINGJUNE 19 , 2014

PHENIX Run 14 Report

Klaus Dehmelt

PHENIX in Run 14

06/19/2014

2

The PHENIX collaboration requested Au + Au @ 200 GeV for 12 weeks

[Physics driven goal is 1.5 nb-1 recorded within |z| < 10 cm]to collect their definitive Heavy Ion Au + Au data sample

Focus on high precision measurements of Heavy Flavor production RAA and v2

for electrons and muons separated charm and bottom decays

Klaus Dehmelt

Heavy Quarks with PHENIX

06/19/2014

3

F/VTX detectors Tracking resolution better than 50 mm Vertex resolution better than 100 mm

D Au

e,m

AuD

X

J/

B

X

K

e

() → 312 mm (u) → 491 mm (c) → 123 mm () → 457 mm

DCA

AuAuD

B

e

e

Klaus Dehmelt

FVTX Data Set

06/19/2014

4

First Au+Au dataset for FVTXSimulation performance of nuclear

modification factor RAA

DGLV Additional collisional

dissociation processes

Klaus Dehmelt

VTX Data Set

06/19/2014

5

Simulation performance of RAA for VTX-system

CharmBeauty

Very different prediction whenconsidering extreme scenario of

beauty quarks following flow field

Klaus Dehmelt

VTX Data Set

06/19/2014

6

Example full unfolding from DCA electrons to parent mesons

Klaus Dehmelt

PHENIX Detectors

06/19/2014

7

PHENIX in Run 14

Klaus Dehmelt

PHENIX Vertex Detector System

06/19/2014

8

Barrel region |h|<1.2, almost 2 in f Pixel sensors at inner 2 layers Strip sensors at outer 2 layers

Forward region 1.2<|h|<2.7, 2 in f 4 layers of mini strips

(50x 2000 to 11000mm)

Klaus Dehmelt

PHENIX Vertex Detector System

06/19/2014

9

Refurbished Barrel VTX system

Klaus Dehmelt

PHENIX Vertex Detector System

06/19/2014

10

Refurbished Barrel VTX system

Klaus Dehmelt

PHENIX Vertex Detector System

06/19/2014

11

Refurbished Barrel VTX system + FVTX

Klaus Dehmelt

PHENIX Vertex Detector System

06/19/2014

12

Klaus Dehmelt

PHENIX IR

06/19/2014

13

F/VTX system installed in IR

Klaus Dehmelt

PHENIX Counting House

06/19/2014

14

Klaus Dehmelt

Run 14 The Parts

06/19/2014

15

2014 - Run 14 subdivided in

Au+Au at

Au+Au at

Klaus Dehmelt

PHENIX @ 15 GeV

06/19/2014

16

Run 14 Low Energy LE @ 15 GeV Physics declared for PHENIX on February 15 Goal for PHENIX: get detectors fully operational for physics

We have recorded a high quality Au+Au 15 GeV data set and have tested our new detectors in preparation for the 200 GeV run

Estimated number of (real) Au+Au @ 15 GeV events:

~ 15M events in [ 30 cm] (March 10) ℒ ~ 2.5/mb

~ 6.4M events in [ 10 cm] (March 10) ℒ ~ 1.1/mb

Klaus Dehmelt

PHENIX @ 15 GeV

06/19/2014

17

Very first additional distribution for BES energies from a small fraction of complete dataset

Klaus Dehmelt

Run 14 High Energy Run

06/19/2014

18

High energy run Au+Au @ 200 GeV was declared on March 15, about five days after LE run was finished

After 10 days set up B+Y longit. and horiz. cooling

Klaus Dehmelt

RHIC Performance

06/19/2014

19

Excellent RHIC performance Fast tune up, stochastic cooling working quickly Very good lifetime, default store length 10 – 11 hours,

fast turnaround

Klaus Dehmelt

RHIC Performance

06/19/2014

20

Excellent RHIC performance

Klaus Dehmelt

Run 14 High Energy Run

06/19/2014

21

First Physics store/run was 18046/405839, March 15

High Energy (HE) run for 93 days ~13 ½ weeksConcluded HE run with 193 fillsOur main goal for Au+Au @ 200 GeV was to

accumulate ℒ = 1.5 nb-1 for BBC-vertex |z| < 10 cm Optimal range for VTX coverage Accumulated = 2.56 nbℒ -1

171% of our goal Integrated luminosity is based on reconstructed events in

BBC-narrow vertex range

Klaus Dehmelt

PHENIX Performance

06/19/2014

22

Secured luminosity goal on May 14Integrated luminosityℒ = 2.56 nb-1

Corresponds to16.2B events

Recorded>19B events

June 16, 2014

Klaus Dehmelt

PHENIX Performance

06/19/2014

23

~ 1100 hours PHENIX physics runs ~ 1500 hours CAD stores > 80% efficiency

Klaus Dehmelt

PHENIX Detector Performance

06/19/2014

24

F/VTX detectors operating well Live area > 95% Internal alignment

Centroid for wedge residual : σ<3mm Centroid for DCA FVTX track-FVTX vertex within ±50mm

limits

Klaus Dehmelt

PHENIX Detector Performance

06/19/2014

25

F/VTX detectors operating well Successful repair and operation Pixel live area > 80 % Strip pixel live area > 85 %

1.0 GeV/c < pt < 1.5 GeV/c

F/VTX detectors operating well Preliminary alignment provides better than 100 mm

DCA

Klaus Dehmelt

Setting Up for 3He + Au

06/19/2014

26

Unique probe of geometryMake use of large tracking coverage of F/VTXMeasurement if hotspots in deposited energy

connect during time evolution v2 and v3?

Klaus Dehmelt

Setting Up for 3He + Au

06/19/2014

27

First collisions last night (Wednesday, June 19)

Klaus Dehmelt

Conclusion

06/19/2014

28

Run 14 Au+Au part successfully completedDetector is performing wellLuminosity goal early accomplished and well

exceededSuccessful running based on fantastic - RHIC - and - Collaborator - performance Setting up for exciting final measurement with 3He + Au @ 200 GeVExpecting end of run in 2014 by July 10Many thanks to my PHENIX fellows, C-AD members

and STAR crews