A Study of Millepede Alignment Algorithm on Monte Carlo Model of Hera-b Outer Tracker

نویسندگان

  • I. Belotelov
  • G. Ososkov
چکیده

In this paper a method of internal alignment of HERA-B OTR PC chambers is discussed. The method is based on simultaneous ˇt of the track and alignment parameters using Millepede matrix reduction and singular value decomposition. Software which implements this idea has been developed, the method has been studied on Monte Carlo models with different levels of simulation. A method generalization for the case of track nonlinear model has been proposed.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Hera-b 98{154 Software 98{019 Ranger { a Pattern Recognition Algorithm for the Hera-b Main Tracking System Part Ii: the Hera-b Magnet Tracker

A method for reconstructing tracks in the inhomogeneous magnetic eld of the HERA-B spectrometer has been developed. It is based on an extension of the Concurrent Track Evolution method, which was originally introduced for pattern recognition in the pattern tracker 1]. The method uses now three-dimensional propagation, with special measures necessary to achieve fast transport in the presence of ...

متن کامل

First Studies on Software Alignment for the Hera-b Outer Tracker

A rst study of software alignment for the Outer Tracker with the standard HERA-B software environment has been performed, using fully simulated events with an average of ve superimposed interactions, and full pattern recognition. The method of hit selection and estimation of the visible shift are discussed in detail. The method was tested in scenarios with displacements of full layers and indiv...

متن کامل

Ranger { a Pattern Recognition Algorithm for the Hera-b Main Tracking System Part I: the Hera-b Pattern Tracker

A pattern recognition strategy for the HERA-B main tracking system is presented. A concurrent track evolution algorithm has been developed to select the optimal track candidate compatible with a seed. Intrinsically a local method, it combines the virtues of track following procedures with the necessary ability to optimize between many available paths in a high occupancy environment. The problem...

متن کامل

Alignment of the Cosmic Rack with the Hits and Impact Points Algorithm

We present first results of a track based alignment procedure applied to test beam data recorded with Cosmic Rack, a test setup which mimicks the outer barrel of the CMS Tracker. The Hits and Impact Points alignment method is used within the CMS reconstruction software framework to align this telescope-like device. These results were compared to results obtained with manual alignment and to res...

متن کامل

s . in s - de t ] 1 0 Ja n 20 07 The Outer Tracker Detector of the HERA - B Experiment . Part III : Operation and Performance HERA - B Outer Tracker Group

In this paper we describe the operation and performance of the HERA-B Outer Tracker, a 112 674 channel system of planar drift tube layers. The performance of the HERA-B Outer Tracker system fullfilled all requirements for stable and efficient operation in a hadronic environment, thus confirming the adequacy of the honeycomb drift tube technology and of the front-end readout system. The detector...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006