1. G5 Beam Instrumentation D. Gassner, E. Pozdeyev 4-09

2. Instrumentation Goals Measure Intensity Current Transformer BPM’s Faraday Cups Profiles YAG & OTR screen PM’s Position BPM’s Profile Monitors Emittance Pepper pot, slits & PM’s Beam Halo Halo scrapers Losses PMT BLM, Ion Chamber’s, & pin diodes Vacuum Chamber Temperature IR Camera

3. G5 Instrumentation Quantities & Layout Current Transformer 1 Halo Scraper (1H & 1V) 2 Pepper Pot 1 Faraday Cups 2 BPM’s 4 Profile Monitors 5 BPM Profile Monitors (YAG & Tgt) Profile Monitors YAG & OTR Pepper Pot Ports Halo Scrapers CT Faraday Cups/ Beam Stops (TBD) Gun 5-Cell Cavity Profile Monitor YAG & Slit Limited to vacuum related components

4. In-Flange Current Transformer Bergoz ICT-CF6-60.4 Integrating type CT Fast bunches IHR electronics Noise <1pC beam charge 60.4mm ID 40mm axial length Rad-Hard option Bakeable to 180C, plan 48h at 150C Separate bake-out zone Internal TC, type-E

5. Beam Position Monitors - Dual plane - 4 locations (3 at 2MeV, 1 at 20MeV) - BPM Button Pick-ups – Proven Design 10mm diameter SMA Connector 1- 4pF, 5% matching 200C bake-out Signal Processing Libera Brilliance BNL Design

6. Profile Monitors Radiabeam Technologies Optional PM Positions YAG:Ce Screens: 100u thick, 10’s of pC at 2.5MeV, and ~1 pC at 20MeV OTR foils: Silicon wafer, 20MeV, & > ~130pC Emittance Slit: 50u slit on 2mm thick Tungsten plate Resolution target: Adjust focus to 50u resolution Impedance Match Cage Vacuum conductance slits 6” Cube PM Actuator Cooling Option Copper tubing welded around the actuator nipples to protect the actuator during the bake out, keep below 100C. 3 position pneumatic actuator Optics Box

7. Profile Monitor Optics Box CCD Camera Full Remote Control Interface Image analysis & logging Remote Control Lens Triple motor Zoom, focus, iris Two mirrors for Alignment purposes CCD axis shifted upstream from the diagnostics to minimize X-ray exposure Virtual target (20MeV locations) Resolution 50u Illumination lamp

8. Halo Scrapers, Pepper Pot, & Faraday Cup - All 3 systems are still being designed - Vacuum ports/crosses available - Princeton Scientific possible vendor Halo Scrapers Measure beam halo distribution Collect charge from intercepted beam halo Two sets of isolated jaws, H & V. Keithley electrometer read out. Stepper motor control & position readback. Pepper Pot Two sets of remote control plunging slits (mask) Resulting image processed on downstream 2MeV PM viewer Faraday Cups/Beam Stop (more details at 4:30 talk today) Located at the end of each transport Ceramic break Isolated beam stop

9. Loss Monitors & IR camera Non-vacuum chamber related Beam Loss Monitors (2 each) Machine Protection Primary Detector - Bare PMT’s (JLAB-CEBAF) (Hamamatsu 931B) – Fast (<10us) – 50dB DR (5nA – 100uA from tube), calibrate signal versus beam charge loss. – Limited coverage – Ion chambers (long cables), (ELBE, etc..) – Full coverage – Calibration (R/hr) – less sensitive, useful at areas where we expect high levels – Pin Diodes (MIP sensitive, small area coverage, rate limited to ~10MHz. IR Camera Check for beam pipe heating, moveable, variable locations. Remote image display & storage.