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• Engineering: (Bill Vulcan)

• The bulkhead connectors are in

• Shv plugs – 50% are in

• Panels for connectors are in, need to drill holes

• AC supplies are ordered for HNNS (2-3 days)

• DC cable was ordered (be in Wed.)

• All vesda heads will be replaced this down period,

• The chips on quad interface are Hct chips, which are c mos;

• A(e,e’p) status (Kevin McIlhany)

• SOS – Cerenkov

Calo – calib

• Raster – changed…NOT!

• VESDA – radiation damage, expect trips lost ~16 hours
• Coincidence timing HMS« SOS
• Q123, D1 trips lost ~ 7 hours
• HV crate/card replacement lost ~ 7 hours maybe more!
• MCC related lost ~ 12-16 hours

• Maintenance Days (Rolf Ent)

• To check:

• Coincidence timing (hardware)

• HMS tracking eff.

• Target boiling

• Maintenance:

• Remove Pb SOS platform

• Remove ~ detector

• HMS pointing at 12.8

• SOS pointing at large angles

• VESDA heads swap/shielding

• HV resurrection

• HMS/SOS rotation

• Target Raster Modification in June 1999 (Chen Yan)

• Make two parallel system: Pseudo-spiral (1998) and TV

• They can be alternated within two hours:

• Switch power resonance loop (Hall C)
• Switch BRm monitor and FSD setting (Fast electronics)
• Switch EPICS control (Machine software)

• Status

• Karen agreed to make two software switchable (two down load time) during June shutdown
• Machineshop is producing 4 power resonance loops, due by 05/30/99
• Fast electronics group needs either re-calibrate the two system or build the second chassis (Chris?)

• No reports given:

• Paul Brindza
• Cynthia Keppel
• Jiang Xiaodong
• Richard Madey
• Steve Wood