Testing SHMS Preshower

Status

• The SHMS Calorimeter has been cabled with signal and HV.
• Have checked setting each channel to 1400V that signal is seen.
• Altered voltages within SHMS Calorimeter to match around 50 mV per tube.
• Added external PMT's across top of calorimeter, 6 in total,
• 06/28 Taking data for number of events through calorimeter and external PMT's
• 07/10 Added diagram of Modules and Live connections

Computer Setup

• Computer is called cnu. The account is gep5.

HV Setup

• Can control the CAEN 403 through terminal on cnu.
  • Open terminal
  • type "su" to login as superuser.
  • type "minicom"
• SHMS Specs

Event Data

• Coincidence data between SHMS Cal and external PMTs Hits per hour
• Diagram of modules used for collecting coincidence data Module Diagram
• Voltage versus PMT# plots for the negative and positive sides of the calorimeter. plot