THE DESIGN AND CONSTRUCTION OF THE BARREL SHOWER COUNTER FOR BES
- Received Date: 1900-01-01
- Accepted Date: 1900-01-01
- Available Online: 1989-11-15
Abstract: The design and construction details of the barrel shower counter for BES are discussed.The barrel shower counter is cylinderical,of 2.5m inner diameter,3.4m outer diameter and 3.85m length,constructed on an aluminum spool of 2.5m diameter,3 cm thickness and 4.23m length.There are 23 layers of lead (0.5r.l. as an absorber) and 24 layers of selfquenching streamer (SQS) tubes.The total weight of the counter is 40,000kg and 80% of 4π sr soild angle coverage.