IOA 1300933668.docx

IOA: 1300933668

3 A0/RGC4-RDK-415D2

A0/ST-500-ATTOCUBE

Special Model ST-500-Attocube, detailed description below.

1ea

A0/336-TC

LakeShore Model 336 temperature controller featuring:

· Four independent diode / resistor input channels;

· Two independent heater output loops (1st loop 50 Watts or 100 W, 2nd loop 50 Watts);

· Autotuning PID, audible and visual alarms, and relays;

· USB and GPIB (IEEE-488) parallel computer interfaces;

· Cable to connect to cryostat.

Power Requirement: 100, 120, 220, or 240 VAC, (+6%, -10%), 50 or 60 Hz 1ea

3 A0/RGC4-RDK-415D2 * Recirculating gas chiller with the following features: 1ea

· Vacuum jacket that is approximately 15” in diameter by 22” high with the cold head occupying an additional height of 6.5”;

· Bellows sealed evacuation valve, safety pressure relief valve and a multi-pin hermetically sealed electrical feedthrough for the diagnostic thermometry in the system;

* Custom designed heat exchangers at the two stages of the cold head for cooling the circulating helium gas;

* Two (2) diagnostic standard curve silicon diode temperature