Difference between revisions of "MagnetScan"

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== Rescattering
 
== Rescattering
  
== Integrating mode
+
* Integrating mode
 
* 2 uA (to be safe) on Lead
 
* 2 uA (to be safe) on Lead
 
* Adjust HV to get a good signal for 2 uA  
 
* Adjust HV to get a good signal for 2 uA  
Compare signal on-detector for new HV to normal HV
+
* Compare signal on-detector for new HV to normal HV
Detune spectrometer up in momentum.
+
* Detune spectrometer up in momentum.
1%, 2%, 4%, 7%, 10%, 15%, 20%, 25%
+
* 1%, 2%, 4%, 7%, 10%, 15%, 20%, 25%
Note, Jack said the septum could go up but wasn't sure how high.  The septum power supply may limit us.
+
* Note, Jack said the septum could go up but wasn't sure how high.  The septum power supply may limit us.
  
A scan down may be considered. Motivation is for poletip scattering and just in general to understand the HRS.
+
* A scan down may be considered. Motivation is for poletip scattering and just in general to understand the HRS.
Same conditions as above.   
+
* Same conditions as above.   
-1%, -2%, -4%, -7%, -10% (negative)
+
* -1%, -2%, -4%, -7%, -10% (negative)
  
Poletip Scan
+
== Poletip Scan
  
Start with all magnets at tune P (nominal).
+
* Start with all magnets at tune P (nominal).
Counting mode.
+
* Counting mode.
20 nA on Lead
+
* 20 nA on Lead
  
Q2 scan +/- 2%, 5%, 10%
+
* Q2 scan +/- 2%, 5%, 10%
  
Septum scan: +/- 5%, 10%, 15%
+
* Septum scan: +/- 5%, 10%, 15%
  
 
Later to have a Geant4 model to try to understand these scans.
 
Later to have a Geant4 model to try to understand these scans.

Revision as of 09:13, 29 August 2019

Magnet scan for rescattering and poletip.

== Rescattering

  • Integrating mode
  • 2 uA (to be safe) on Lead
  • Adjust HV to get a good signal for 2 uA
  • Compare signal on-detector for new HV to normal HV
  • Detune spectrometer up in momentum.
  • 1%, 2%, 4%, 7%, 10%, 15%, 20%, 25%
  • Note, Jack said the septum could go up but wasn't sure how high. The septum power supply may limit us.
  • A scan down may be considered. Motivation is for poletip scattering and just in general to understand the HRS.
  • Same conditions as above.
  • -1%, -2%, -4%, -7%, -10% (negative)

== Poletip Scan

  • Start with all magnets at tune P (nominal).
  • Counting mode.
  • 20 nA on Lead
  • Q2 scan +/- 2%, 5%, 10%
  • Septum scan: +/- 5%, 10%, 15%

Later to have a Geant4 model to try to understand these scans.