School of Chemistry: Electron Paramagnetic Resonance Spectroscopy

Q-Band Pulse EPR Spectrometer - An existing Bruker E580 X-band (~9.5 GHz) pulse EPR spectrometer operating with a Bruker ER 073 electromagnet, and a Cryogenics Cryogen Free Variable Temperature Cryostat is to be replaced, extended or upgraded to Q-band (~34 GHz). - The current 3.6 kW magnet power supply will need to be exchanged with a 12 kW power supply (Bruker ER 83 CS) available in the laboratory. - The current capability of generating arbitrary waveforms is to be retained. -The current capability of ENDOR (electron nuclear double resonance) is to be retained. - A data acquisition workstation and software licence are to be provided (Bruker Xepr license could be exchanged). -Pulse programming allowing standard experiments and usual phase cycles (4-pulse DEER, 5-pulse RIDME, 6 Pulse DQC, 2 and 3-pulse ESEEM, HYSCORE, Mims- and Davies-ENDOR etc.). Additional information: All tenders for the University of St Andrews are administered through our eTendering System (InTend).To Express an Interest please go to our tender website at https://intendhost.co.uk/universityofstandrews Please note that 'Notes of Interest' placed via PCS (Public Contracts Scotland) are not automatically accepted

- Q-band resonator with large sample access for high concentration sensitivity. - Operating temperatures from 1.8 K to 300 K. - Compatible with Cryogenics Cryogen Free Variable Temperature Cryostat. - Connected via WR-28 waveguides. - Cold sample loading system. Additional information: All tenders for the University of St Andrews are administered through our eTendering System (InTend).To Express an Interest please go to our tender website at https://intendhost.co.uk/universityofstandrews Please note that 'Notes of Interest' placed via PCS (Public Contracts Scotland) are not automatically accepted

- Q-band resonator with small sample access for high absolute sensitivity. - Operating temperatures from 1.8 K to 300 K. - Compatible with Cryogenics Cryogen Free Variable Temperature Cryostat. - Connected via WR-28 waveguides. - Cold sample loading system. - Typical B1 conversion factor at low Q. - Sample access size: diameter and active length. - Bandwidth at low Q. - Optical access. - Short ring down time with low Q and high-power pulses. Additional information: All tenders for the University of St Andrews are administered through our eTendering System (InTend).To Express an Interest please go to our tender website at https://intendhost.co.uk/universityofstandrews Please note that 'Notes of Interest' placed via PCS (Public Contracts Scotland) are not automatically accepted

- Q-band microwave amplifier for pulse operation. - At least 40 W peak power (46 dB gain from 1 dBm). - Frequency of operation. - Peak power. - Typical gain. - Input and output connectors. - Pulse rise and fall times. - Maximum gate length and duty cycle. - Enclosure and power supply. - WR-28 output connection. - 100 W or more output peak power. - noise blanking. Additional information: All tenders for the University of St Andrews are administered through our eTendering System (InTend).To Express an Interest please go to our tender website at https://intendhost.co.uk/universityofstandrews Please note that 'Notes of Interest' placed via PCS (Public Contracts Scotland) are not automatically accepted

- 10 kHz – 100 MHz output. - Peak power. - Gain. - Duty cycle. - Input and output connectors. - Enclosure and power supply. - 150 W or more output peak power. Additional information: All tenders for the University of St Andrews are administered through our eTendering System (InTend).To Express an Interest please go to our tender website at https://intendhost.co.uk/universityofstandrews Please note that 'Notes of Interest' placed via PCS (Public Contracts Scotland) are not automatically accepted