Changeset 821 for trunk


Ignore:
Timestamp:
05/31/01 08:26:17 (23 years ago)
Author:
harald
Message:
some correctionss....
File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/ICRC_01/mccontrib.tex

    r819 r821  
    374374the expected rates from proton showers and background light.
    375375
    376 The estimated trigger rate due to proton showers is $143 \pm 11$ Hz. This
    377 rate would increase due to other hadron showers (He, Li, ...) which
     376The numbers quoted in this section are calcuated for a zenith angle
     377$\Theta = 10^o$. Same studies have been done for $\Theta =0^o$ and
     378for $\Theta = 15^o$ and we got similar results.
     379We estimated the rate for the first level trigger
     380with the "standard" trigger conditions. 
     381The first level trigger rate due to proton showers without any
     382background is $143 \pm 11~\mathrm{Hz}$.
     383This rate would increase due to other hadron showers (He, Li, ...) which
    378384we have not simulated yet. About 25 \% larger rate is expected due mainly
    379 to He. Moreover, to get a realistic rate one should assume a realistic
    380 background, for instance 0.09 photo electrons per ns \citep{ml94} and
    381 the Crab Nebula star field. Under this conditions the estimated rate is
    382 $396 \pm 88$ Hz.
     385to He.
     386
     387However, to get a more reliable rate one must take into account
     388a realistic background situation. We take for the diffuse part of the
     389night sky background a value of 0.09 photo electrons per ns
     390\citep{ml94}
     391and use the star field around the Crab nebula.
     392Under this more realistic conditions the first level trigger
     393background rate (protons and light of night sky) is $396 \pm 88$ Hz.
    383394
    384395It has been also studied the effect on the trigger rate of the discriminator
     
    396407\end{figure}
    397408
    398 The numbers that appear in this section have been estimated for $10^\circ$
    399 zenith angle. But the same studies have been done for $0^\circ$ and $15^\circ$
    400 and
    401 we got similar results.
    402409
    403410\section{Conclusion}
     
    420427MAGIC Collaboration, "The MAGIC Telescope, Design Study for
    421428the Construction of a 17m Cherenkov Telescope for Gamma
    422 Astronomy Above 10 GeV", Preprint MPI-PhE?18-5, March 1998.
     429Astronomy Above 10 GeV", Preprint MPI-PhE 18-5, March 1998.
    423430
    424431\bibitem[Heck and Knapp(1995)]{hk95}
     
    427434\bibitem[Mirzoyan and Lorenz(1997)]{ml97}
    428435Mirzoyan R. and E. Lorenz, Proc. 25th ICRC, Durban, 7, p.356, 1997
    429 
    430 
    431 \bibitem[Abramovitz and Stegun(1964)]{as64}
    432 Abramowitz, M. and Stegun, I. A., Handbook of Mathematical Functions,
    433 U. S. Govt. Printing Office, Washington D. C., 1964.
    434 
    435 \bibitem[Aref(1983)]{a83}
    436 Aref, H., Integrable, chaotic, and turbulent vortex motion in
    437 two-dimensional flows, Ann. Rev. Fluid Mech., 15, 345--389, 1983.
    438436
    439437\bibitem[Mirzoyan and Lorenz(1994)]{ml94}
     
    444442
    445443\end{document}
     444
     445
Note: See TracChangeset for help on using the changeset viewer.