Observation of multiple volume reflection by different planes in one bent silicon crystal for high-energy negative particles
- Scandale W
- Vomiero A
- Bagli E
- Baricordi S
- Dalpiaz P
- Fiorini M
- Guidi V
- Mazzolari A
- Vincenzi D
- Milan R
- Della Mea G
- Vallazza E
- Afonin AG
- Chesnokov YA
- Maisheev VA
- Yazynin IA
- Kovalenko AD
- Taratin AM
- Denisov AS
- Gavrikov YA
- Ivanov YM
- Lapina LP
- Malyarenko LG
- Skorobogatov VV
- Suvorov VM
- Vavilov SA
- Bolognini D
- Hasan S
- Mattera A
- Prest M
- Tikhomiro VV
DOIAbstract
Multiple volume reflection by different planes passing through the < 111 > axis in a bent silicon crystal was observed for the first time for 150 GeV/c negative particles, pi(-) mesons, at one of the secondary beams of the CERN SPS. The beam of pi(-) mesons was deflected opposite to the crystal bend by an angle of about 48 mu rad, which is 4.6 times larger than in a single volume reflection by the (110) bent planes. The one-side deflection efficiency was about 65%. Multiple volume reflection transforms to a single volume reflection when the orientation angle of the < 111 > axis relative to the beam direction is increased
Add to ORKG