Ispiryan, Karo

karo@lx2.yerphi.am


Abstract:

RICH Like Detectors with Radiators consisting of Stack of Plates

L.A. Gevorgian, K.A. Ispirian 1, M.K. Ispiryan * , V.G. Khachatryan
Yerevan Physics Institute, Brothers Alikhanian 2, 375036, Yerevan, Armenia; 
* University of Houston, Houston, TX, USA

Abstract

     The production of optical and UV Cherenkov and transition radiation (TR) photons in stacks of identical and different transparent plates by high energy particles and heavy ions is considered. With the decrease of the thickness of the plates the Cherenkov radiation losses its threshold behavior, and the angular distribution of the produced Cherenkov-transition radiation becomes much wider. Possible construction and use of RICH like detectors with such radiators are discussed.


Processing of the data of  Ring Transition Radiation Detectors (RTRD)

K.A. Ispirian 1, M.K. Ispiryan * and V.G. Khachatryan

Yerevan Physics Institute,, Brothers Alikhanian 2, 375036, Yerevan, Armenia; 

* University of Houston, Houston, TX, USA

Abstract

     While the Cherenkov radiation rings in RICH detectors allow to measure the particle velocity, in recently proposed RTRD it is necessary to obtain the angular distribution of the transition radiation (TR) photons produced in a stack of plates in order to determine the Lorentz factor of single relativistic heavy ions (RHI). Some possible methods of processing of RTRD data which can provide the highest resolution are discussed.


1 Corresponding author. E-rnail: karo@lx2.yerphi.am (K.A. Ispirian)

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