Author/Authors :
Ikematsu، نويسنده , , K. and Iwata، نويسنده , , Y. and Kaimi، نويسنده , , K. and Kaneta، نويسنده , , M. and Kohama، نويسنده , , T. and Maeda، نويسنده , , N. and Matsukado، نويسنده , , K. and Ohnishi، نويسنده , , H. and Ono، نويسنده , , K. and Sakaguchi، نويسنده , , A. and Sugitate، نويسنده , , T. and Sumi، نويسنده , , Y. and Takata، نويسنده , , Y. and Tanabe، نويسنده , , M. and Yokoro، نويسنده , , A.، نويسنده ,
Abstract :
We describe a start-timing detector for the PHENIX experiment at the relativistic heavy-ion collider RHIC. The role of the detector is to detect a nuclear collision, provide precise time information with an accuracy of 50 ps, and determine the collision point along the beam direction with a resolution of a few cm. Technical challenges are that the detector must be operational in a wide particle-multiplicity range in a high radiation environment and a strong magnetic field. We present the performance of the prototype and discuss the final design of the detector.
