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eTOF - status and plan CBM-STAR joint Workshop Outline Introduction

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1 eTOF - status and plan CBM-STAR joint Workshop Outline Introduction
Ingo Deppner Physikalisches Institut der Uni. Heidelberg Outline Introduction eTOF acceptance eTOF status Plan for the next years Milestones Summary Event display of a Au + Au reaction at 25 AGeV Ingo Deppner CBM-STAR joint Workshop CBM-STAR joint Workshop Darmstadt

2 CBM-STAR joint Workshop Darmstadt 18.03.2017
Letter of interest ⋮ Ingo Deppner CBM-STAR joint Workshop Darmstadt

3 CBM-STAR joint Workshop Darmstadt 18.03.2017
Benefits Benefit for STAR: providing critical TOF coverage for BES II - PID extension to y = 1.2 in collider mode - access to energies from 4.5 to 7.7 GeV in the fixed target program Benefit for CBM: providing a large-scale integration test of the CBM TOF system, including PID and calibration of the detectors (hardware and software) preparation for day one experiment at SIS 100 Benefit for CBM-TOF group members: participation in the analysis of the physics data provided by the CBM TOF detectors, including authorship of any publications from this data. Ingo Deppner CBM-STAR joint Workshop Darmstadt

4 The general physics goals are common for STAR and CBM
arXiv: v Onset of deconfinement Chiral symmetry restoration 1st order phase transition Critical point Strange states of matter Rapidity dependence Di-lepton Directed flow Elliptic flow Fluctuations Hypernuclei Physical observables Ingo Deppner CBM-STAR joint Workshop Darmstadt

5 Beam Energy Scan phase II
Fixed Target Program cms energies from 3 to 7.7 GeV Baryon chemical potential range from 420 MeV to 720 MeV Fixed target program not yet approved Ingo Deppner CBM-STAR joint Workshop Darmstadt

6 Acceptance in collider mode
Ingo Deppner CBM-STAR joint Workshop Darmstadt

7 Acceptance in fixed target mode
Ingo Deppner CBM-STAR joint Workshop Darmstadt

8 Acceptance in collider mode
Pseudo rapidity range for eTOF 1.05    1.5 (FXT: 1.66    2.27) Low pt limit - from track length of the TPC (multiple scattering) High pt limit – time resolution of the TOF system collider Fixed Target arXiv: v Ingo Deppner CBM-STAR joint Workshop Darmstadt

9 eTOF module 3 MRPCs (MRPC3a/b) – tilted by 7
32 strips/MRPC with a pitch of 1 cm 27 cm strip length Active area about 92 cm x 27 cm 192 read out channels Preamplifier PADI boards TDC GET4 boards Strip 1 Strip 96 overlapping strips Ingo Deppner CBM-STAR joint Workshop Darmstadt 9

10 CBM-STAR joint Workshop Darmstadt 18.03.2017
eTOF wheel A conceptual design - 36 modules - 3 layers - 12 sectors channels - Sector counting matches the TPC sectors - Total depth about 14.2” (36 cm) 24 13 23 14 22 15 21 16 20 17 19 18 Ingo Deppner CBM-STAR joint Workshop Darmstadt

11 eTOF geometry in CBM ROOT
MRPC - Active gas - Glass Electronics Aluminum box Fixed target at 4.8 m from eTOF (2.1 m from center) Ingo Deppner CBM-STAR joint Workshop Darmstadt

12 Acceptance of one sector
Collider mode Interaction point 2.7 m 1.09 < eta < 1.62 Good tracks - iTPC Ingo Deppner CBM-STAR joint Workshop Darmstadt

13 Acceptance of one sector
Collider mode Interaction point 2.7 m 1.09 < eta < 1.62 Good tracks - iTPC Ingo Deppner CBM-STAR joint Workshop Darmstadt

14 CBM-STAR joint Workshop Darmstadt 18.03.2017
Rate and multi-hit All particles Beam energy 25 AGeV Interaction rate 10kHz (2kHz recording rate) Fixed target position 4.8 m Particle flux < 45Hz/cm2 Multi-hit probability < 7.4 % overlapping strips Ingo Deppner CBM-STAR joint Workshop Darmstadt

15 Setup in Jan 2017 Open module Module fixed at the pole-tip
Ingo Deppner CBM-STAR joint Workshop Darmstadt

16 CBM-STAR joint Workshop Darmstadt 18.03.2017
Setup in Jan 2017 Ingo Deppner CBM-STAR joint Workshop Darmstadt

17 CBM-STAR joint Workshop Darmstadt 18.03.2017
Setup in Jan 2017 place for CLK and AFCK 6m cable CLK / SYNC + DATA/ LV power Ingo Deppner CBM-STAR joint Workshop Darmstadt

18 CBM-STAR joint Workshop Darmstadt 18.03.2017
Setup in Jan 2017 Online monitoring Ingo Deppner CBM-STAR joint Workshop Darmstadt

19 CBM-STAR joint Workshop Darmstadt 18.03.2017
Setup in Jan 2018 One full sector 6 MRPCs with float glass (USTC) 3 MRPCs with low resistive glass (Tsinghua Univ.) Review readiness report March 2017 Ingo Deppner CBM-STAR joint Workshop Darmstadt

20 CBM-STAR joint Workshop Darmstadt 18.03.2017
Setup in Jan 2018 Ingo Deppner CBM-STAR joint Workshop Darmstadt

21 CBM-STAR joint Workshop Darmstadt 18.03.2017
Setup in Jan 2019/2020 24 13 23 14 22 15 21 16 20 17 19 18 Ingo Deppner CBM-STAR joint Workshop Darmstadt

22 CBM-STAR joint Workshop Darmstadt 18.03.2017
Milestones December submit the physics proposal to GSI and BNL for approval Summer shipping a real size module to BNL and installing it on the east side pole of STAR Feb st system integration test with one module by participating in the Run17 beam time in STAR Fall shipping and installation of one sector Feb nd system integration test with one sector by participating in the Run18 beam time in STAR Summer shipping all 36 modules including infrastructure (gas system, LV-, HV-power supply) to BNL Fall Installation and commissioning Feb Start of the BES II campaign Summer Decommissioning and shipping of all modules including infrastructure to FAIR Ingo Deppner CBM-STAR joint Workshop Darmstadt

23 CBM-STAR joint Workshop Darmstadt 18.03.2017
Summary eTOF offers unique opportunities within the next 3 years Hardware performance test counter performance DAQ stability Software development environment calibration PID methods Physics analysis experience (with eTOF data) flow fluctuations strange resonances eTOF can be realized as part of the CBM FAIR phase 0 program New people and contributions are highly welcome Ingo Deppner CBM-STAR joint Workshop Darmstadt

24 Thank you for your attention
Ingo Deppner CBM-STAR joint Workshop Darmstadt

25 CBM-STAR joint Workshop Darmstadt 18.03.2017
Backup Backup Slides 80 W 1 ns Ingo Deppner CBM-STAR joint Workshop Darmstadt

26 Acceptance of one sector
Collider mode Interaction point 2.7 m Ingo Deppner CBM-STAR joint Workshop Darmstadt

27 CBM-STAR joint Workshop Darmstadt 18.03.2017
Rate and multi-hit Primary particles Beam energy 25 AGeV Interaction rate 10kHz (2kHz recording rate) Particle flux < 25 Hz/cm2 Multi-hit rate < 3.6 % overlapping strips Ingo Deppner CBM-STAR joint Workshop Darmstadt

28 CBM-STAR joint Workshop Darmstadt 18.03.2017
Rate and multi-hit Box cover Secondary particles Beam energy 25 AGeV Interaction rate 10kHz (2kHz recording rate) Majority of secondary's are produced in the box cover RPC Ingo Deppner CBM-STAR joint Workshop Darmstadt

29 CBM-STAR joint Workshop Darmstadt 18.03.2017
Rate and multi-hit All particles Beam energy 10 AGeV Interaction rate 10kHz (2kHz recording rate) Fix target position 4.8 m Particle flux < 30Hz/cm2 Multi-hit rate < 5.8 % Beam energy 4 AGeV Interaction rate 10kHz (2kHz recording rate) Fix target position 4.8 m Particle flux < 15Hz/cm2 Multi-hit rate < 3.4 % Ingo Deppner CBM-STAR joint Workshop Darmstadt

30 CBM-STAR joint Workshop Darmstadt 18.03.2017
Rate and multi-hit Primary particles Beam energy 10 AGeV Particle flux < 20 Hz/cm2 Multi-hit rate < 2.4 % Beam energy 4 AGeV Particle flux < 12 Hz/cm2 Multi-hit rate < 1.3 % Ingo Deppner CBM-STAR joint Workshop Darmstadt

31 Summary on rate and multi-hit probability
Beam energy 4A GeV 10A GeV 25A GeV Max. rate of all particles [Hz/cm2] 15 30 45 Max multi-hit prob. of all part. [%] 3.4 5.8 7.4 Max rate of prim. particles [Hz/cm2] 12 20 25 Max multi-hit prob. of prim. part [%] 1.3 2.4 3.6 Ingo Deppner CBM-STAR joint Workshop Darmstadt

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