Recent progress in focussing gamma rays

A. Kohnle; P. Von Ballmoos; J. Naya; J. F. Olive; G. Vedrenne; R. K. Smither; M. Faiz; P. B. Fernandez; T. Graber

Recent progress in focussing gamma rays

A. Kohnle^*
, P. Von Ballmoos
, J. Naya
, J. F. Olive
, G. Vedrenne
, R. K. Smither
, M. Faiz
, P. B. Fernandez
, T. Graber

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

Research output: Contribution to journal › Article › peer-review

Abstract

We present recent progress of the Toulouse-Argonne Collaboration in focusing γ-rays. After a short introduction reviewing the design of a focusing γ-ray telescope and outlining the scientific potential of such an instrument, the results of tests with a prototype instrument at Argonne in '94 and '95 are summarized. Together with TESRE (Bologna) and UNH (NH, USA), we have proposed a balloon borne crystal lens telescope. For a first balloon flight observing the Crab Nebula at 85 and 170 keV, we calculate signal to noise ratios of 3-8. Current tests involve a prototype "tunable" lens (i.e. the energy that is focused can be changed), where a system of piezo-based picomotors and eddy-current sensors allow a change of crystal inclination. For the spaceborne tunable crystal lens telescope described, we estimate 3 σ narrow-line sensitivities of 4 · 10^-7ph/cm²s keV to 2 · 10^-6ph/cm²s keV in the energy range of 200-1500 keV.

Original language	English
Pages (from-to)	353-356
Number of pages	4
Journal	European Space Agency, (Special Publication) ESA SP
Issue number	382
State	Published - 1997

Keywords

Crystal diffraction optics
γ-ray line astronomy

ASJC Scopus subject areas

Aerospace Engineering
Space and Planetary Science

Cite this

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title = "Recent progress in focussing gamma rays",

abstract = "We present recent progress of the Toulouse-Argonne Collaboration in focusing γ-rays. After a short introduction reviewing the design of a focusing γ-ray telescope and outlining the scientific potential of such an instrument, the results of tests with a prototype instrument at Argonne in '94 and '95 are summarized. Together with TESRE (Bologna) and UNH (NH, USA), we have proposed a balloon borne crystal lens telescope. For a first balloon flight observing the Crab Nebula at 85 and 170 keV, we calculate signal to noise ratios of 3-8. Current tests involve a prototype {"}tunable{"} lens (i.e. the energy that is focused can be changed), where a system of piezo-based picomotors and eddy-current sensors allow a change of crystal inclination. For the spaceborne tunable crystal lens telescope described, we estimate 3 σ narrow-line sensitivities of 4 · 10-7ph/cm2s keV to 2 · 10-6ph/cm2s keV in the energy range of 200-1500 keV.",

keywords = "Crystal diffraction optics, γ-ray line astronomy",

author = "A. Kohnle and \{Von Ballmoos\}, P. and J. Naya and Olive, \{J. F.\} and G. Vedrenne and Smither, \{R. K.\} and M. Faiz and Fernandez, \{P. B.\} and T. Graber",

year = "1997",

language = "English",

pages = "353--356",

journal = "European Space Agency, (Special Publication) ESA SP",

issn = "0379-6566",

publisher = "European Space Agency",

number = "382",

}

TY - JOUR

T1 - Recent progress in focussing gamma rays

AU - Kohnle, A.

AU - Von Ballmoos, P.

AU - Naya, J.

AU - Olive, J. F.

AU - Vedrenne, G.

AU - Smither, R. K.

AU - Faiz, M.

AU - Fernandez, P. B.

AU - Graber, T.

PY - 1997

Y1 - 1997

N2 - We present recent progress of the Toulouse-Argonne Collaboration in focusing γ-rays. After a short introduction reviewing the design of a focusing γ-ray telescope and outlining the scientific potential of such an instrument, the results of tests with a prototype instrument at Argonne in '94 and '95 are summarized. Together with TESRE (Bologna) and UNH (NH, USA), we have proposed a balloon borne crystal lens telescope. For a first balloon flight observing the Crab Nebula at 85 and 170 keV, we calculate signal to noise ratios of 3-8. Current tests involve a prototype "tunable" lens (i.e. the energy that is focused can be changed), where a system of piezo-based picomotors and eddy-current sensors allow a change of crystal inclination. For the spaceborne tunable crystal lens telescope described, we estimate 3 σ narrow-line sensitivities of 4 · 10-7ph/cm2s keV to 2 · 10-6ph/cm2s keV in the energy range of 200-1500 keV.

AB - We present recent progress of the Toulouse-Argonne Collaboration in focusing γ-rays. After a short introduction reviewing the design of a focusing γ-ray telescope and outlining the scientific potential of such an instrument, the results of tests with a prototype instrument at Argonne in '94 and '95 are summarized. Together with TESRE (Bologna) and UNH (NH, USA), we have proposed a balloon borne crystal lens telescope. For a first balloon flight observing the Crab Nebula at 85 and 170 keV, we calculate signal to noise ratios of 3-8. Current tests involve a prototype "tunable" lens (i.e. the energy that is focused can be changed), where a system of piezo-based picomotors and eddy-current sensors allow a change of crystal inclination. For the spaceborne tunable crystal lens telescope described, we estimate 3 σ narrow-line sensitivities of 4 · 10-7ph/cm2s keV to 2 · 10-6ph/cm2s keV in the energy range of 200-1500 keV.

KW - Crystal diffraction optics

KW - γ-ray line astronomy

UR - https://www.scopus.com/pages/publications/5244311144

M3 - Article

AN - SCOPUS:5244311144

SN - 0379-6566

SP - 353

EP - 356

JO - European Space Agency, (Special Publication) ESA SP

JF - European Space Agency, (Special Publication) ESA SP

IS - 382

ER -

Recent progress in focussing gamma rays

Abstract

Keywords

ASJC Scopus subject areas

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