The modern concept of the INCA project elements

The modern concept of the INCA project elements

Nuclear Physics B (Proc. Suppl.) 151 (2006) 426–429 www.elsevierphysics.com            a   a ...

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Nuclear Physics B (Proc. Suppl.) 151 (2006) 426–429 www.elsevierphysics.com

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)  $   " ") "$   $  C* 0 2 ?"@  "  "* 0920-5632/$ – see front matter © 2005 Elsevier B.V. All rights reserved. doi:10.1016/j.nuclphysbps.2005.07.077

Nlayer = 50 $ " B ?@  , " . " *B @  , " " "  ' $*     ," "* "$ "  . ) $ ' "  "  "  "$ , * " , * Llog = 200  "$  , "$ ) "$ " "    ) "* $  $ ?C* 0@ "." "  "  )$ "  $". $  * "*  " "$   *" ' * *" * "$   " "  )$  $ "  $  $ " *" ")$ ?∼ 80D , " @ !'  """ $$ "  $$ ,  $*   *"   * $ ?∼ 20D , " @ ' *.  2" * *"   , )" ).  )"  ," , " "   "

427

V.V. Ammosov et al. / Nuclear Physics B (Proc. Suppl.) 151 (2006) 426–429

$ $ ?C* 0@

   " $  )   ,   ) " "   ' $* , ,, " *. " $  ")" , $* *" ) $$    . * ) "$  "$    " . " )  C  , "   ". "$ 2 "  * "" , * *"  "$$  ) Nneut ,   * "$   )  ,  $) , " . "* ""$ ?%@ "$  E. "* )"    "  .  "  * " ∼ 106  ' "  , ") "$.   ""  $  . "  τtherm < ∼ 2 μ 2  $,, ?. * "@  ,   ")   τcapt ∼ 100 μ ?'" @ '   "   * .   *"  " * ) $ , τmeas < ∼ 300 μ   * $ ' ,   F  " * ) * )$ "$   Δτres < ∼ 10  ' " *$.)"  ) "" * 6 " (Nch  > ∼ 10 )  " ) $ , τch ∼ 1 μ '  $   ) " 2$ $"

"* (∼ 107 ) ' " "  " ".$  2$ ,  $"  " *$ )  ∼ 8  ' $  ,    2$ 2  "$    "" ?Ltherm < ∼ 10 @ "$ $,. , ,  ")  ?Lcapt < 10 @ '" ∼ )   )" "  , .!    *" ) $$   * . ) "$ $ , ,$*  % ": .  2" "  $ , " "   Llog = 200   " "" * λatt ∼ 50  "  )  "     $" ?"*  " ":@ 2 " " " δx ∼ 2  " "  "* 6 (  10 "  $ ,   $   ."* "   " 10 ? α@7 (  $ 2 ) $ "  , . " , α )"  ? 31 !@ "$ 7 ( ?6D@  "  , " , α )"  ? /3 !@ "$ :$ " , 7∗ ( ?4/D@ 2  ,"  .    * $ " 7 ( "$  , "

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γ . " 2 "  * Eγ = 0.478 !  )  .55 $$.)  . "  = 5> "  $ ' " 0.5D , " "   "$ "  " " $  " * $ F"  ;6D . 68D , " , " " "$ *   , " 0     ,, , F* "    * $ ,  .55 " " "  , 10 ? α@7 ( "  F"  "  . * , 58  '  .* "$ *" "  *," 2" "  ) $$ 

" " *$ )"  -2  $,,  "  $   $  *" ,   ) ,   ")  2  " ) " '2 2" , *.  * 2" *" "  $ $M ?"@  . "* , ,   ) ) "., * *$ "," $  " , )" " "$ " " $   * "" * λatt ∼ 150 B ?@  * , )" ).  )"  $ ," , " "    ) *   )" "  "* 6 ( " ," "   .")      " * " " , 10 2  "  * "   6 (? α@ "  /1 ! "$ γ . " "   $ & "  "$$" 2" ,  .$ "  2 :)   , Nγ γ . "  *"* " "  ,   ")  "$  * " ,  """ ) $$   γ . "  "  " $,,  $. " ,   ")  )M  ' ")  , "    " 10 

    , " γ . " 2 Eγ = 0.478 ! 0 -$ * $ " "$ ")   

428

V.V. Ammosov et al. / Nuclear Physics B (Proc. Suppl.) 151 (2006) 426–429

*   , " , $  "$   , " γ . " 2 Eγ = 2.2 ! ) * ")  5  $*   " "$:.    "$ 2 " *  . , Cd  ".  " ) ?σcapt ∼ 5300 "  " En = 2 !@     , γ . " ?Nγ = 4.1 Eγ tot  16.4 ! ) * ").  @  "  2 " $)* , "$ ) )"  "    *" . " ?$N-= 0.0032@ $  "*  * " ) * = / ;> / "* , : "  ," ,  "   " $   "  " ". Gd * "$  *"$ ?σcapt ∼ 60000 "  Nγ  = 4.6 Eγ tot  13.9 !@ 7 ,  $ "  )  . "  "  ,, ,  .") 

* "  $"$""* ,  $ . * $"  γ . "$"  "  *" $   ,    .")  ) -2  "))" ,  2" ,  . *" * "  $ "  " " "  " "  "))" " , :)$ ,, "$  "$   2 )  O $*    $ ".  $  "  :)$   ) . * $  $ , ,  % " ) *" ")$ "  " $   ""$  *   E *  *   )    $,,   ")$ " $ "  $ , " "  ,  $ " ,  % ":  $" 2 * " "   "  " " ".  δx ∼ 2  2" " "$ "$ , " " 6  *  "$$ *" ) $$  " ""$  " " "  * $   " " "  , 2$ Lw = 2.5  ,   ""$ .  *" 2*$ ":  $ $ 2 " " " δx ∼ 3  O :)*  ")) "  Nlayer ".    " *," )   " .  " " ?δx ∼ 1/ Nlayer @ )" $   " " )  δ < ∼ 1  , *. * ""$

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V.V. Ammosov et al. / Nuclear Physics B (Proc. Suppl.) 151 (2006) 426–429

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