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Brief Introduction to Chinas Astroparticle Physics Programs - - PowerPoint PPT Presentation

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Brief Introduction to Chinas Astroparticle Physics Programs Shuang-Nan Zhang zhangsn@ihep.ac.cn Center for Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Outline: major projects in China Underground

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Brief Introduction to China’s Astroparticle Physics Programs

Shuang-Nan Zhang zhangsn@ihep.ac.cn

Center for Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences

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Outline: major projects in China

  • Underground experiments
  • Ground-based CMB
  • High altitude cosmic rays/gamma-rays
  • Space missions

– Dark energy survey – X-/gamma-rays, cosmic rays, dark matter – Gravitational waves

2016-04-07

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Jiangmen Underground Neutrino Observatory (JUNO)

3/103

Full funding approved and in construction complete in 2019

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600m Soudan USA 700m Y2L Korea 800m Canfranc Spain 1000m Kamioka Japan 1100m Boulby UK 1400m LNGS Italy 1600m Baksan Russia 1500m DUSEL USA 2300m 2100m SNO Canada 1700m Modane France 2400m CJPL China

UL in the world(rock overburden)

Tunnel Mine Deep Underground Lab

2016-04-07

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World underground laboratories

2016-04-07

China JinPing Lab

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  • II

Jin Ping mountain & Ya long River

  • <1 hr. flight from

Chengdu to Xichang;

  • ~2 hr. driving from

Xichang to JinPing

Site of CJPL

2016-04-07

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Layout of CJPL-I

Traffic Tunnel Preparation Room LBF CDEX PandaX

Total space: 4000 m3 Main Lab Space: 6.5(W) x 6.5(H) x 42(L)

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CJPL-II design

  • Four 12m*12m*150m tunnel

2016-04-07

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  • Nov. – Dec. 2014, Civil team ready;
  • Jan. – May 2015, Civil Construction
  • June – Sept. 2015Internal lining
  • Oct. 2015, Acceptance of civil construction;
  • Nov. 2015 – June 2016, Infrastructure

construction

Schedule

2016-04-07

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  • CDEX-1T (Ge DM+DBD Exp.)
  • PandaX-1T (Xe DM Exp.)
  • Dark matter experiment (e.g. DS-G3)
  • Nuclear astro-particle physics
  • ……

CJPL-II possible users

2016-04-07

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Status of Ali Observatory

  • IHEP start up funding approved
  • CAS equipment funding being approved
  • CNSF research funding being considered

2016-04-07

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Large High Altitude Air Shower Observatory

90 k m2 γ-ray survey telescope; 1 M m2 EAS detector array Central detector array for cosmic rays

LHAASO

2016-04-07

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Status of LHAASO

  • Construction and equipment funding

approved

  • Research funding being considered by

CNSF

2016-04-07

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Chinese Space Station Optical Survey

  • 25000□°imaging survey: 250-1050nm, ≥6 filters, g, r, & i ≥

AB25 mag (5σ, point source)

  • 800□°deep imaging survey: g, r, & i ≥ AB26.5 mag
  • 10000□°medium & high galactic latitude slitless

spectroscopy survey: g, r, & i continuum ≥ AB21 mag Survey Science

Cosmology: dark energy, dark matter, gravity, large-scale structure, neutrinos, primordial non-Gaussianity… AGNs: high-z AGNs, clustering, dual AGNs, variability, UV excess, host galaxies… Galaxies: formation & evolution, mergers, high- zs, dwarfs, LSBs, near field, halos properties… Milky Way: structure, satellites, dust, extinction… Stellar science: formation, dwarfs, metal poor… Solar system (high inclination): TNO、NEA… Astrometry: reference frame, star clusters… …

Ecliptic Coord.

Launch ~2022

2016-04-07

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DAMPE: launched in Dec. 17 2015

2016-04-07

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Gamma-ray burst polarization : POLAR

  • China- Switzerland

collaboration

– Energy range: 50-350 keV; FOV of POLAR: ~½ sky

  • Onboard China’s spacelab

TG-2: launch time Sept. 2016

  • Main science: GRB jet &

central engine; tests of quantum gravity theories Tian-Gong 天宫 Palace in Heaven

Plastic scintillator stacks

2016-04-07

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High Energy (HE): Normal Mode NaI, 20-250 keV, ~5000 cm2 CsI, 50-700 keV, ~5000 cm2 Low Energy (LE): SCD,1-15 keV, 384 cm2

Star trackers

Medium (ME): Si-PIN,5-30 keV, 952 cm2 ME HE LE

Hard X-ray Modulation Telescope (HXMT)

High Energy (HE): GRB Mode NaI, 100-300 keV, 5000 cm2 CsI, 250-3000 keV, 5000 cm2

Launch in Nov. 2016: ~200 GRBs/year

2016-04-07

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SVOM: ~2021 launch

GFTs GWAC 4-250 keV 30 keV-5 MeV 0.3-5 keV 450-900 nm 400-1700 nm 400-650 nm, 650-950 nm

2016-04-07

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High Energy cosmic-Ray Detector (HERD)

n10X acceptance than others, but weight 2.3 T ~1/3 AMS

3D CALO e/G/CR energy e/p discrimination STK(W+SSD) STK(W+SSD) Charge gamma-ray direction CR back scatter

Planned launch 2022-2025

2016-04-07

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HERD Gamma-ray Sky Survey Sensitivity

Narrow FoV

2016-04-07

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Space gravitational wave programs

  • Taiji program of CAS

– Similar to LISA but with shorter arms: ~0.3 million kilometers, and/or join eLISA – R&D being approved

  • Tianqin program of Zhongshan University

– Three satellites orbiting around the earth – R&D funded

  • China’s MOST is coordinating the national

gravitational wave program

2016-04-07

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Major astroparticle physics projects in China

  • Underground experiments: JUNO & JPUL (ongoing)
  • Ground-based CMB: Ali observatory (starting)
  • H-altitude cosmic rays/gamma-rays: LHAASO (started)
  • Space missions

– Dark energy survey: China’s Space Station (approved ~2022) – X-/gamma-rays, cosmic rays, dark matter: DAMPE (2015), POLAR (2016), HXMT (2016), SVOM (approved 2021), HERD (R&D~2022) – Gravitational waves: Taiji and Tianqin (starting)

2016-04-07