Author/Authors :
Adachi، نويسنده , , S. and Akiyama، نويسنده , , T. and Aoki، نويسنده , , K. and Asano، نويسنده , , H. and Ebesu، نويسنده , , S. and Fukao، نويسنده , , Y. and Haki، نويسنده , , Y. and Hata، نويسنده , , M. and Ichikawa، نويسنده , , Y. and Iinuma، نويسنده , , H. and Ikeda، نويسنده , , Y. and Ikeno، نويسنده , , M. and Imai، نويسنده , , K. and Imazu، نويسنده , , Y. and Karatsu، نويسنده , , K. Eguchi-Kasai، نويسنده , , M. and Kawamura، نويسنده , , H. and Kim، نويسنده , , E. a، نويسنده ,
Abstract :
The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) offers the unique capability to collide polarized protons at high energies. One of the highlights of the polarized proton program performed at s = 500 GeV is that it affords the direct measurement of sea quark contribution to the proton spin via W-boson production through the measurement of the parity violating single spin asymmetry. A new trigger electronics system for forward muons, which is especially capable of W-boson detection, was developed for the PHENIX experiment. The trigger was installed as an additional electronic circuit, and it was connected in parallel with the existing cathode readout electronics of the muon tracking chamber.
Keywords :
Cathode strip chamber , High momentum trigger , Front-end electronics , PHENIX , Forward muon detection , Polarized parton distribution function
