The Candi system is designed to provide end users with a continuous supply of a low vapor pressure liquid precursor (>1 Torr) delivered at a steady pressure.
Applications
Typical applications: liquid precursor supply to Direct Liquid Injection (DLI), on-board bubbler or vaporizer and on-board buffer canister.
Pressurized helium is used to transfer a precursor from the shuttle canister to an internal day tank and from this day tank to the tool. The day tank allows for the continuous dispensing of the chemical during a shuttle canister change-out. The patented Candi purge, which uses gas compression and expansion cycles, ensures a safe shuttle canister change-out and prevents the contamination of a supplied precursor often very sensitive to air and moisture.
+ Other patented features, such as the back-up distribution mode, the day tank level control and the empty shuttle canister detection technique for maximum chemical use, ensure a reliable & cost saving distribution of the precursor to the process.
Qualification
The Candi is qualified by most tool manufacturers for 300-mm processes:
Referenced on multiple OEMs platforms
Pre-defined interfacing with multiple OEMs
Candi - Precursor distribution system
Features
Precise delivery pressure control (± 50 mbar) for the most demanding applications
System adapts to any SEMI-compliant shuttle canister up to 40L
8L day tank
Patented back-up mode for improved reliability
Smart Empty Control for maximal chemical usage
Chemical purge sequence validated with live chemicals
PLC based technology with 10” color touch screen
Ethernet communication port for SCADA monitoring
Customized signal interface
Options
On-board vacuum pump
On-board degassing device
Pigtails heating
Up to 4 on-board outlet processes
Valves Manifold Box (VMB) for distribution to multiple points of use
Different communication protocols available
Start-up and operator training
Safety features
Fully automatic distribution and canister change-out sequences
Easy to reach “Emergency Machine Off” button
Standard exhaust flow alarm
Optional fire and gas detection alarms
Leak detection
Open door detection
Individual pressure switch and relief valve on N2 and He pressurized lines
计时器增压/减压tank, for day tank refill
Precise alarm messages
Operator intervention reduced to a minimum
Multi-level password protection to restrict access to critical functions
Reliability
MTBF*: 8,760 hours
Uptime: 99.98%
*Mean Time Between Failure
Utilities requirements
He
7 barg, UHP, 1 Nm3/h
N2
7 barg, UHP, 10 Nm3/h
Pneumatics
7 barg, 5 Nm3/h
Exhaust
< 2 Torr
Vacuum
110-240 VAC, 50/60 Hz
Power
UPS, 110/240VAC, 50/60Hz, 1kVA
Process data
Chemical maximum flow rate: 1 slpm when working at Candi maximum pressure of 5 barg