Difference between revisions of "PosRun 12 10 2013"
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| + | PICAP coincidence detector is compared of two silicon disks 1cm in radius separated by two cm | ||
{| border="1" |cellpadding="20" cellspacing="0 | {| border="1" |cellpadding="20" cellspacing="0 | ||
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|<math> \theta</math> || E (MeV) || I beam for e- pVs 50 ohms || I beam for e+ || e+ Rate || mag - det dist ( cm) | |<math> \theta</math> || E (MeV) || I beam for e- pVs 50 ohms || I beam for e+ || e+ Rate || mag - det dist ( cm) | ||
|- | |- | ||
| − | | 50 || 9.7 || || | + | | 50 || 9.7 || ||. || |
|- | |- | ||
| 57 || 8.8||. || || || 65 | | 57 || 8.8||. || || || 65 | ||
Latest revision as of 21:35, 10 December 2013
120 Hz , 39 MeV electrons on 2 mm thick tungsten
Electron coincidence rate was always 80 Hz
PICAP coincidence detector is compared of two silicon disks 1cm in radius separated by two cm
| E (MeV) | I beam for e- pVs 50 ohms | I beam for e+ | e+ Rate | mag - det dist ( cm) | |
| 50 | 9.7 | . | |||
| 57 | 8.8 | . | 65 | ||
| 68 | 6.8 | 197 | 5820 | 23 | 77 |
| 78 | 5.5 | 968 | 60 | ||
| 90 | 4.5 | 23 |