平成 29 年度共同利用研究・研究成果報告書
研究課題名

和文：CTA 大口径望遠鏡一号機スローコントロール統合運用
英文：Integration and Commissioning of the Slow Control Program for

the Camera of the first Large Size Telescope of CTA in La Palma, Spain
研究代表者

HADASCH, Daniela

参加研究者

HADASCH, Daniela; BLANCH, Oscar; GARCIA, Cristobal; KONNO,Yusuke; MASUDA, Shu; SAITO, Takayuki; MAZIN, Daniel; NAKAJIMA, Daisuke;
TESHIMA, Masahiro

研究成果概要The next generation observatory for very highenergyγ rays will be the Cherenkov Telescope

Array covering energies from 20 GeV to 300
TeV with unprecedented flux sensitivity. FourLarge Size Telescopes (LSTs) of 23 m diameter
will be arranged at the center of the array. The
first LST will be a fully functional prototype
that is installed directly in La Palma, Spain.

Figure １: Scheme of sub-systems

The telescope will become fully operational at the end of FY2017. The purpose of myproject is the development of a program CLUSCO to control and monitor thephotomultiplier tube (PMT) modules within the cam era control program for the LST,
which is the essential part of the telescope control.

My project consists of 5 steps:1.) Development of multi thread program for the PMT Cluster Control (ClusCo) written inC language at ICRR in Japan.
2.)

Testing of complete program on a small-scaled camera in the laboratory at ICRR.

3.) Integrate ClusCo into the Camera Control (CaCo) at the construction site on La
Palma, Spain.
4.) Commissioning of CaCo and the whole data taking system under real conditions on La
Palma, Spain.
5.) First scientific data taking with the first LST.

I made good progress that is summarized in the following:1.) The structure of the ClusCo software is developed, the interfaces and theimplementation of the different sub-systems of the modules is finished. On larger scale, I
developed together with IFAE (Spain) the structure of CaCo, where ClusCo has to beintegrated to. The scheme is presented in Figure 1. The red circle represents the part I am
particular responsible for.
2.) The tests with a small-scaled version of the LST camera consisting of 19 modules atICRR were successful. Afterwards, ClusCo was ready to be integrated into CaCo.
3.) The integration of ClusCo into CaCo is done. Methods and algorithms using ClusCo
can be launched through CaCo and calibration routines are being currently tested anddebugged.
4.) Stress tests of the software and hardware are being performed in the laboratory:- Tests in Madrid with a camera of 35 modules à DONE!
- Quality control of all modules to be used in the final LST camera à Were done on theCanary Islands and finished as planed by end of June 2017. DONE!
- Final integration and tests with the whole camera in Barcelona. Afterwards the camera
will be shipped to La Palma à The whole camera arrived at IFAE, Barcelona. Modules
are installed now (Beginning of FY2018). In Figure 2 a picture of the camera with somemodules already installed is shown.
- Commissioning of the whole telescope on La Palma à Mid of FY2018.
My project is within the schedule and makes
good progress. The software is successfully
running and was used for the Quality Control
tests on the Canary Islands. Now it will beapplied to the whole camera at IFAE where thefinal tests will be done.

整理番号Ｅ06

Figure 2: Camera at IFAE, Spain