Abstract
The Drell-Hearn-Gerasimov sum rule relates the total cross section of polarized photons on polarized nucleons to the anomalous magnetic moment of the nucleon. It is based on very fundamental principles and provides important constraints for models of the nucleon. Since the measurement of the total cross section needs to be performed in a wide energy-range, the verification will be undertaken at two accelerators - MAMI in Mainz and ELSA in Bonn. The determination of the total cross section requires a detector with large acceptance of the polar and the azimutal scattering angle and a high efficiency for the detection of charged particles and for decay-photons as well. Therefore, lead-scintillator sandwich-counters will be used. In order to veto the electromagnetic background produced in the shell of the target atoms a threshold Cerenkov counter will be placed in forward direction. The properties of these components have been calculated and tested. The design of the detector to measure the Drell-Hearn-Gerasimov sum rule at energies above 1 GeV is complete. The whole detector is now ready to be built. (orig.) [Deutsch] Zur Bestimmung des totalen Wirkungsquerschnitts wird ein Detektor mit 4{pi}-Raumwinkelakzeptanz fuer den Nachweis von geladenen Teilchen wie auch von Zerfalls-Photonen benoetigt. Dazu sollen
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Citation Formats
Helbing, K.
Conception of a detector for the testing of the Drell-Hearn-Gerasimov sum rule; Konzeption eines Detektors zur Ueberpruefung der Drell-Hearn-Gerasimov Summenregel.
Germany: N. p.,
1993.
Web.
Helbing, K.
Conception of a detector for the testing of the Drell-Hearn-Gerasimov sum rule; Konzeption eines Detektors zur Ueberpruefung der Drell-Hearn-Gerasimov Summenregel.
Germany.
Helbing, K.
1993.
"Conception of a detector for the testing of the Drell-Hearn-Gerasimov sum rule; Konzeption eines Detektors zur Ueberpruefung der Drell-Hearn-Gerasimov Summenregel."
Germany.
@misc{etde_10121648,
title = {Conception of a detector for the testing of the Drell-Hearn-Gerasimov sum rule; Konzeption eines Detektors zur Ueberpruefung der Drell-Hearn-Gerasimov Summenregel}
author = {Helbing, K}
abstractNote = {The Drell-Hearn-Gerasimov sum rule relates the total cross section of polarized photons on polarized nucleons to the anomalous magnetic moment of the nucleon. It is based on very fundamental principles and provides important constraints for models of the nucleon. Since the measurement of the total cross section needs to be performed in a wide energy-range, the verification will be undertaken at two accelerators - MAMI in Mainz and ELSA in Bonn. The determination of the total cross section requires a detector with large acceptance of the polar and the azimutal scattering angle and a high efficiency for the detection of charged particles and for decay-photons as well. Therefore, lead-scintillator sandwich-counters will be used. In order to veto the electromagnetic background produced in the shell of the target atoms a threshold Cerenkov counter will be placed in forward direction. The properties of these components have been calculated and tested. The design of the detector to measure the Drell-Hearn-Gerasimov sum rule at energies above 1 GeV is complete. The whole detector is now ready to be built. (orig.) [Deutsch] Zur Bestimmung des totalen Wirkungsquerschnitts wird ein Detektor mit 4{pi}-Raumwinkelakzeptanz fuer den Nachweis von geladenen Teilchen wie auch von Zerfalls-Photonen benoetigt. Dazu sollen Blei-Szintillator Sandwich-Zaehler benutzt werden. Um den elektromagnetischen Untergrund, der in der Huelle der Target-Atome erzeugt wird, zu unterdruecken, soll ein Schwellen-Cerenkov Zaehler unter Vorwaerts-Winkeln als Veto eingesetzt werden. (orig./HSI)}
place = {Germany}
year = {1993}
month = {Mar}
}
title = {Conception of a detector for the testing of the Drell-Hearn-Gerasimov sum rule; Konzeption eines Detektors zur Ueberpruefung der Drell-Hearn-Gerasimov Summenregel}
author = {Helbing, K}
abstractNote = {The Drell-Hearn-Gerasimov sum rule relates the total cross section of polarized photons on polarized nucleons to the anomalous magnetic moment of the nucleon. It is based on very fundamental principles and provides important constraints for models of the nucleon. Since the measurement of the total cross section needs to be performed in a wide energy-range, the verification will be undertaken at two accelerators - MAMI in Mainz and ELSA in Bonn. The determination of the total cross section requires a detector with large acceptance of the polar and the azimutal scattering angle and a high efficiency for the detection of charged particles and for decay-photons as well. Therefore, lead-scintillator sandwich-counters will be used. In order to veto the electromagnetic background produced in the shell of the target atoms a threshold Cerenkov counter will be placed in forward direction. The properties of these components have been calculated and tested. The design of the detector to measure the Drell-Hearn-Gerasimov sum rule at energies above 1 GeV is complete. The whole detector is now ready to be built. (orig.) [Deutsch] Zur Bestimmung des totalen Wirkungsquerschnitts wird ein Detektor mit 4{pi}-Raumwinkelakzeptanz fuer den Nachweis von geladenen Teilchen wie auch von Zerfalls-Photonen benoetigt. Dazu sollen Blei-Szintillator Sandwich-Zaehler benutzt werden. Um den elektromagnetischen Untergrund, der in der Huelle der Target-Atome erzeugt wird, zu unterdruecken, soll ein Schwellen-Cerenkov Zaehler unter Vorwaerts-Winkeln als Veto eingesetzt werden. (orig./HSI)}
place = {Germany}
year = {1993}
month = {Mar}
}