Repository logo

Browsing by Author "Suszycki, Leszek"

  • Thumbnail Image
    Item
    A proposal for the mechanical design of the LumiCal detector
    (Institute of Nuclear Physics Polish Academy of Sciences, 2006) Błocki, Jacek; Daniluk, Witold; Gil, M.; Moszczyński, Arkadiusz; Oliwa, Krzysztof; Pawlik, Bogdan; Suszycki, Leszek; Wierba, Wojciech; Zawiejski, Leszek
    The LumiCal calorimeter [1] will be located in very forward region of the future detector at the International Linear Collider (ILC) [2] . It is compose of tungsten plates and thirty silicon detector planes. It will be used for precisely luminosity measurement. The requirement for the position stability of the silicon detectors is very high. The actual position of each silicon detector plane relative to each other and of the calorimeter relative to the beam line and the interaction point should be known with accuracy of a few micrometers. To achieve this goal the structure of the calorimeter has to be very stiff. Moreover, the support and the temperature of the calorimeter have to be stable. The aim of this paper is to describe the mechanical structure of the detector which can fulfill the requirement of the structure stiffness. For the proposed structure appropriate calculations of deformations under the dead load have been carried out. From presented here results of calculations it is concluded that the proposed structure can be accepted from the stiffness point of view.
  • Thumbnail Image
    Item
    CMOS optical sensor and readout electronics for LumiCal Alignment System
    (Institute of Nuclear Physics Polish Academy of Sciences, 2007) Błocki, Jacek; Daniluk, Witold; Gil, M.; Kielar, Eryk; Moszczyński, Arkadiusz; Oliwa, Krzysztof; Pawlik, Bogdan; Słomiński, Wojciech; Suszycki, Leszek; Wierba, Wojciech; Zawiejski, Leszek
    The silicon-tungsten calorimeter LumiCal, located in very forward region of the future detector at the International Linear Collider, is proposed for precisely luminosity measurement. One of the requirements to fulfil this task is available information on the actual position of the calorimeter relative to the beam interaction area which should be known with accuracy of a few micrometers. In this paper we present project measurement unit for the positioning of the LumiCal electron detector by optical method using a laser beam and a CMOS sensor.
  • Thumbnail Image
    Item
    Laser measurement of the LumiCal detector displacement
    (Institute of Nuclear Physics Polish Academy of Sciences, 2006) Błocki, Jacek; Daniluk, Witold; Gil, M.; Karbowiak, Michał; Moszczyński, Arkadiusz; Oliwa, Krzysztof; Pawlik, Bogdan; Słomiński, Wojciech; Suszycki, Leszek; Wierba, Wojciech; Zawiejski, Leszek
    The silicon-tungsten calorimeter LumiCal, located in very forward region of the future detector at the International Linear Collider, is proposed for precisely luminosity measurement. One of the requirements to fulfil this task is available information on the actual position of the calorimeter relative to the beam interaction area which should be known with accuracy of a few micrometers. In this paper we discuss the possible solutions for the positioning of the LumiCal electron detector by optical method. The results of the displacement measurement using a laser beam and a CCD camera are described. The measurements were performed on a proof-of-principle basis and achieved the accuracy of about ± 1 μm in x, y and ± 3 μm in z direction.
  • Thumbnail Image
    Item
    Silicon sensors for the LumiCal for the Very Forward Region
    (Institute of Nuclear Physics Polish Academy of Sciences, 2007) Błocki, Jacek; Daniluk, Witold; Dąbrowski, Władysław; Gil, M.; Harder, U.; Idzik, Marek; Kielar, Eryk; Moszczyński, Arkadiusz; Oliwa, Krzysztof; Pawlik, Bogdan; Suszycki, Leszek; Wierba, Wojciech; Zawiejski, Leszek
    The silicon-tungsten calorimeter LumiCal, located in very forward region of the future detector at the International Linear Collider, is proposed for the precise luminosity measurements based on the Bhabha scattering process. For this purpose, the precise measurement of the scattering polar angles is crucial. A silicon–tungsten sandwich calorimeter with fine–segmented silicon sensors has been designed for this purpose. This paper describes two slightly different designs of silicon sensors for the LumiCal based on available silicon technologies and especially on the possibility of cutting silicon wafers on curved lines.