1. Slide 1 UCSB CDMS Group Neutron Trigger

2. Slide 2 UCSB CDMS Group Neutron Trigger PROGRESS: à Electronics Fabrication/ Test –Gate Generator (Jimmy) à Synchronized Clock –High Frequency Oscillator and Counter Designed –Fabrication (Bobby) à Simulation Work –Complete Trigger Electronics à Packaging –Panel drawing complete (review)

3. Slide 3 UCSB CDMS Group Trig. Electronics Breadboard Trigger Gate Circuit à Surface mount parts on Surfboards over ground plane.

4. Slide 4 UCSB CDMS Group NIM Neutron Trigger Panel TRIGGER (LED): LIVE (LED): TRIGGER OUT: Global Trigger (Lemo) PULSE IN: NIM Pulse input (Lemo) EXTERNAL TRIGGER IN: CMOS Test input (BNC) USB CONTROL: Control Gate time and Pulse count, (other functions?) Trigger Enable

5. Slide 5 UCSB CDMS Group Future Plans Continue Trigger Logic fabrication using Surf Boards Build low jitter gate circuit and test NIM module panel drawing to shop Write LabVIEW USB GUI à Sets Gate Time [T] à Sets Pulse Count [N] à Trigger Enable à Software Trigger

6. Slide 6 UCSB CDMS Group Future Plans (continued) LED Pulse Stretch Circuit à Design –Pulse Integrator and Lamp Driver (Jimmy) à Simulation –PSpice à Incorporate into Trigger design