Difference between revisions of "MagnetScan"
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== Rescattering | == Rescattering | ||
| − | + | * 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.
