Repository logo

Browsing by Author "Kielar, Eryk"

  • 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
    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.
  • Thumbnail Image
    Item
    The optical alignment system for luminosity detector at ILC
    (Institute of Nuclear Physics Polish Academy of Sciences, 2014) Banaś, Elżbieta; Daniluk, Witold; Kielar, Eryk; Kotuła, Jerzy; Krupa, Beata; Moszczyński, Arkadiusz; Oliwa, Krzysztof; Pawlik, Bogdan; Wierba, Wojciech; Zawiejski, Leszek
    The possibility to use semi-transparent silicon detectors to measure the displacement detector luminosity LumiCal, planned for the future linear accelerator ILC / CLIC, was studied using an optical laser system based on these detectors. Preliminary results of measurements were achieved using the prototype of this system provided in the displacement measurement values of the X and Y directions with an accuracy of a few microns.