CTA 報告130: 全体報告
手嶋 政廣
他 CTA-Japan メンバー
ICRR, The University of Tokyo
Max-Planck-Institute for Physics

CTA Telescopes
Array Configurations

CTA Observatory consists of two sites, Chile
Paranal and Spain Canary Island to coverall sky.

0-500

500

1000-1500-5000500

CTA North
La Palma, Spain

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E-1500-1000-5000500

1500

CTA South
Paranal, Chile-1000-5000500( ,) ,,1000

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LST 23m Low-Energy

MST 12m
Mid-Energy

SST 4.3m
High-Energy

CTAN-LST Array

Sensitivity x3, Angular Resolution x2
Energy Range > 20GeV

100 hrs

GRBsAGNsnnnnn

CTA-LST array contributes to the sensitivity in low energies>20GeV Threshold Energy
Distant AGNs are observable up to z=2
X10000 sensitivity for GRBs and AGN flares than Fermi
First observation of GRBs from groundScience with CTA is very wide
Energy Frontier in Astrophysics

Cosmic Ray Origin

Super Massive
Black Holesn Origin of Cosmic Rays (Big accelerators)
n Black Hole and S.M.B.H.
n Dark Matter Search (Discovery)

Dark Matter Search (Discovery)

Extragalactic Sources

Active Galactic Nuclei

Gamma Ray Bursts

Galactic Sources~ 200 high energy sources are discovered.
CTA will observe more than 1000 sources.

Super Nova Remnants

Binaries

4

CTA North at ORM

Observatorio del Roque de los Muchachos

LST3
LST2

LST4
LST1

Focal Plane Instr.
Electronics (JP/IT/ES)
Camera body (ES)Camera Supporting
Structure (FR/IT)

CTA-LST Project : Big International Effort
BR(Brazil), CH(Switzerland), DE(Germany), ES(Spain), FR(France),IN(India), IT(Italy), HR(Croatia), JP(Japan), SE(Sweden)

Mirror (JP)Interface Plate(DE/BR/JP)
Actuator (JP/CH)
CMOS-Cam (JP)Star Guider (SE)Calibration Box (IN/IT)

Flywheel, UPS (JP)Computers, network (JP)INFRA (ES)

Structure (DE/ES)
Access Tower (DE/ES)
Drive (ES/FR)
Bogie (ES/DE)
Rail (ES/DE)
Foundation (ES)Installation Sequence
after the rail system
1)

3)

5)
Assemble the camera supporting structure

6)
Install bogies and lower structure

2)

Assemble dish structure on the ground4)

Mount the camera supporting structure

7)

Install azimuth structure

Mount dish structure and assemble
elevation sub-structure/ mount mirrors

Install the camera access tower andthe camera

CTA-LST1 Construction
Sep. 2016

After the long delay of the construction permission
August. 2017

Dec. 2016

Status of LST1 construction
Azimuth structure completed

Nov 2017

Dish structure is mounted
4. Dec. 2017

After Ice Storm

6. Feb. 2018

CTA LST1 Construction
Dummy CSS for balancing

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17 Feb. 2018
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LST1 construction
Installing Mirror Interface Plates
3 March 2018

Interface Plates
and ActuatorsFlywheel Units
50kW è 500kW booster

Status of LST1 construction
Camera mechanics finishedNov 2017

IT computer center installed, 2k Cores, 3PBDec 2017

Backplanes of the camera installed

Power and Network readyDiesel

ATS, Transformer

Jan 2018

Mar 2018

500kW Flywheel Power UnitsYes, we can do it
Construction of four LSTs

n CTA LST1 will have the first light in summer 2018
n We do not see any major problem in LST1 constructionn LST1 Inauguration is scheduled on 10th October in 2018
n Early Science during engineering run
n Proof the threshold energy of 20GeV by observing Pulsars and GRBs
n Onsite analysis (on-fly data analysis chain)n Cross Calibration with MAGIC Telescopes è deep observationn Continue the the construction of LST2-4 and complete array of 4 LSTs inFY2018-FY2020