1. OVEN TEST STAND 17/9/2014 Ville Toivanen

2. Introduction Test stand for the development of Linac3 GTS-LHC ion source micro oven (used for Pb beam production) Aims: Gain better understanding of the oven functionality Improve the oven performance Improve GTS-LHC and Linac3 performance with Pb Means: Correlation between input power and temperature Quantification of evaporation rate Measurement of short and long term stability … Test bench for Linac3 oven control system development A more sophisticated PLC control system

3. Overview and features 9 1.Vacuum enclosure 2.Pumping group 3.Pressure measurement 4.Oven 5.Oven feedthrough 6.Viewports + shutter 7.Thermocouple feedthrough 8.Venting / gas inlet 9.Evaporation rate detector 8 7 6 5 4 3 2 1 6 Quartz crystal sensor Deposition data from shift in the crystal fundamental frequency Shutter allows sampled measurement Industry “standard” Successfully used to diagnose Linac4 Cs oven

4. Cross section view Oven Thermocouple feedthroughs Evaporation detector Viewport Shutter

5. Control system (Michael O’Neil) Programmable Logic Control (PLC) Control, monitoring and data logging Oven control Diagnostics (thermocouples, evaporation rate, pressure) Long term operation (Optional) LabVIEW interface for measurement routine development Platform for future Linac3 oven control system upgrade

6. Current situation FeatureSituation Overall designCompleted Mechanical (vacuum) partsQuote for prices acquired Control systemQuote for prices acquired Custom oven feedthroughDesign decided, next details and manufacturing Frame, mountingPlanning ongoing Diagnostics (evaporation detector)Waiting for a quote Place for the test standNot yet known

7. Cost and schedule estimations CategoryCost estimateSchedule Mechanical parts, vacuum8100 CHF5 weeks delivery Diagnostics(waiting quote) Control system (PLC)3200 CHFOff the shelf Oven feedthrough (design+manuf.)~4000 CHF(workshop dependent) Support, mounting structures~5000 CHF(manuf. dependent) Bottom line: ~20000 CHF + detector price >1.5 months