Development of high-rate timing RPCs

✍ Scribed by L. Lopes; R. Ferreira Marques; P. Fonte; A. Pereira; V. Peskov; A. Policarpo

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 234 KB
• Volume: 533
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2004.07.003

✦ Synopsis

For many applications of RPCs to time-of-flight counters in heavy ion experiments the expansion to much higher values of the counting rate capability, so far limited to around 2 kHz/cm 2 is of fundamental importance. To address this issue we developed single-gap timing RPCs with resistive electrodes made from a commercially available plastic material. Tests performed in photon beams yielded a time resolution around 90 ps s, essentially unchanged from 2 kHz/ cm 2 to 27 kHz/cm 2 . This result establishes the basic feasibility of timing measurements with RPCs at rates of tens of kHz/cm 2 , keeping a time resolution below 100 ps s and using plastic electrode materials.