First results from the SPI Imaging Test Setup

被引：0

作者：

Wunderer, CB ^{[1
]}

Diehl, R ^{[1
]}

Georgii, R ^{[1
]}

von Kienlin, A ^{[1
]}

Lichti, G ^{[1
]}

Strong, AW ^{[1
]}

Schönfelder, V ^{[1
]}

Vedrenne, G ^{[1
]}

Sanchez, F ^{[1
]}

Connell, P ^{[1
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

来源：

EXPLORING THE GAMMA-RAY UNIVERSE | 2001年 / 459卷

关键词：

INTEGRAL; SPI; coded mask imaging;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The SPI Imaging Test Setup (SPITS) was built for experimental verification of the imaging properties of SPI. SPITS provides the possibility to validate simulations - needed for SPI image reconstruct,ion with laboratory measurements. SPITS consists of a coded mask and two Germanium detectors; no anti-coincidence system is used. The mask has the same Tungsten-alloy HURA coding as SPI. The two hexagonal Ge-detectors are housed in a common Al end cap. They can be moved to cover the 19 SPI Ge-detector positions. Mask and Germanium detectors are made of SPI-FM materials. The imaging properties of SPITS are being measured with radioactive sources 9 in from the detector plane. We obtain an angular resolution of about 2degrees at 1.8 MeV and a point-source location capability of SPITS of 15' at 1.2 MeV, both for strong sources.

引用

页码：639 / 643

页数：5

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