In this section the high voltage supply and the crate they will be housed in are presented.
To completely instrument the VeLo 9 16 channel HV supplies (EHQ F607n-F) were bought in august 2006. 3 of them act as spares. These units are used in the burn-in and the Velo Slice during module production.
The supplies would require one crate (ECH 238 UPS) but the modules can be operated individually by providing the two voltages required.
Iseg EHQ F607n-F | |
---|---|
Maximum Voltage | 700 |
Maximum Current | 4mA |
Ripple and Noise | < 20mV at max load and V > 50V |
Voltage Setting Resolution | 14mV |
Current Setting Resolution | 80nA |
Voltage Measurement Resolution | 14mV |
Current Measurement Resolution | 80nA |
Range of DVout/dt | 0.28V/s to 70V/s |
Resolution of DVout/dt | 0.5V/s |
The corresponding crate to house the EHQ HV modules and provide power to them is the ECH 238M UPS. It has the following properties:
The purpose of this test is to measure the channel gradient of each channel per HV module by setting a ramping speed of 7V/s via software in two cases:
Each HV Module test file in the left side presents 2 graphs corresponding to each case above.