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questions_area [2018/09/14 08:50]
berg
questions_area [2018/09/24 13:01] (current)
berg
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   * 6) How does a wedge restore the achromaticity in a fragment separator?   * 6) How does a wedge restore the achromaticity in a fragment separator?
   * 7) What is the purpose of the DSR (Spin dipole) in front of GRAND RAIDEN focal plan?   * 7) What is the purpose of the DSR (Spin dipole) in front of GRAND RAIDEN focal plan?
-{{ :questions_answers_lecture3.pptx |Answers}}+{{ :questions_answers_lecture3.pdf |Answers}} 
 + 
 +==== Some questions from Lecture 5 (Berg):==== 
 + 
 +  * 1) Why are there 189 Characteristic Rays (see Procedure CHARAY)? 
 +  * 2) How realistic is Gaussian distribution for the incoming beam? 
 +  * 3) Difference between dispersive focus and achromatic focus. 
 +  * 4) On ST. GEORGE the reactions that push the energy acceptance (+/-8%) also pushes the angular acceptance (+/-40 mrad). This doesn’t seem to be true in SECAR: 15O(p,g)19Ne pushes the energy acceptance (+/-3.1%) but not in the angular acceptance (only +/-15.6 mradvs. SECAR’s +/-25 mrad acceptance). Is there a reason SECAR was designed with angular acceptance so much larger than the energy acceptance? 
 +  * 5) Purpose of SECAR Section 3? 
 +  * 6) On slide 6, what is the meaning of the arrows the Effective Field Length and Good Field Regions? 
 +  * 7) Extended target for SECAR? 
 +  * 8) Engefunction (not from this Lecture)? 
 +  * 9) Is Q1 (Quad + Hex) used or only a design feature? 
 +  * 10) x_HO= (x’|x)*2_0 + HO, how are the higher order terms (HO) added 
 +  * 11) Clarify D in the definition of the Nominal Beam definition 
 +  * 12) Why is the alignment adjusted before and after the ion optical element? 
 +  * 13) Can the recirculatory-ring for projectile beam increase the nuclear reaction rate? I.E. can we return the projectile beam (passed through the target) to the beam again. 
 +  * 14) Alignment example not clear. 
 +  * 15) Does higher order effects give us details about the initial beam characteristic? Or do HO effects tell us that the beam line is different than what we think? ( e.g. field imperfections in the magnets etc.) 
 +{{ :questions_answers_lecture4.pdf |Answers}}
  
/srv/thewikis/JIOSS/data/attic/questions_area.1536929449.txt.gz · Last modified: 2018/09/14 08:50 by berg