BEAM PROFILE INVESTIGATION OF THE NEW COLLIMATOR SYSTEM FOR THE J-PET DETECTOR

被引：4

作者：

Kubicz, E. ^{[1
]}

Silarski, M. ^{[1
]}

Wieczorek, A. ^{[1
,2
]}

Alfs, D. ^{[1
]}

Bednarski, T. ^{[1
]}

Bialas, P. ^{[1
]}

Czerwinski, E. ^{[1
]}

Gajos, A. ^{[1
]}

Glowacz, B. ^{[1
]}

Jasinska, B. ^{[3
]}

Kaminska, D. ^{[1
]}

Korcyl, G. ^{[1
]}

Kowalski, P. ^{[4
]}

Kozik, T. ^{[1
]}

Krzemien, W. ^{[5
]}

Mohammed, M. ^{[1
]}

Moskal, I. ^{[1
]}

Niedzwiecki, S. ^{[1
]}

Pawlik-Niedzwiecka, M. ^{[1
]}

Raczynski, L. ^{[5
]}

Rudy, Z. ^{[1
]}

Strzelecki, A. ^{[1
]}

Wislicki, W. ^{[5
]}

Zielinski, M. ^{[1
]}

Zgardzinska, B. ^{[3
]}

Moskal, P. ^{[1
]}

机构：

[1] Jagiellonian Univ, Fac Phys Astron & Appl Comp Sci, Lojasiewicza 11, PL-30348 Krakow, Poland

[2] Polish Acad Sci, Inst Met & Mat Sci, Reymonta 25, PL-30059 Krakow, Poland

[3] Marie Curie Sklodowska Univ, Inst Phys, Dept Nucl Methods, Pl M Curie Sklodowskiej 1, PL-20031 Lublin, Poland

[4] Natl Ctr Nucl Res, Swierk Comp Ctr, Soltana 7, PL-05400 Otwock, Poland

[5] Natl Ctr Nucl Res, Div High Energy Phys, Soltana 7, PL-05400 Otwock, Poland

来源：

ACTA PHYSICA POLONICA B | 2016年 / 47卷 / 02期

关键词：

HIT-POSITION RECONSTRUCTION; TIME-OF-FLIGHT; PLASTIC SCINTILLATORS; SIGNALS; LIBRARY;

D O I：

10.5506/APhysPolB.47.537

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Jagiellonian Positron Emission Tomograph (J-PET) is a multi-purpose detector which will be used for search for discrete symmetries violations in the decays of positronium atoms and for investigations with positronium atoms in life-sciences and medical diagnostics. In this article, we present three methods for determination of the beam profile of collimated annihilation gamma quanta. Precise monitoring of this profile is essential for time and energy calibration of the J-PET detector and for the determination of the library of model signals used in the hit-time and hit-position reconstruction. We have shown that usage of two lead bricks with dimensions of 5 x 10 x 20 cm(3) enables to form a beam of annihilation quanta with Gaussian profile characterized by 1 mm FWHM. Determination of this characteristic is essential for designing and construction the collimator system for the 24-module J-PET prototype. Simulations of the beam profile for different collimator dimensions were performed. This allowed us to choose optimal collimation system in terms of the beam profile parameters, dimensions and weight of the collimator taking into account the design of the 24-module J-PET detector.

引用

页码：537 / 548

页数：12

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