Quick VPT Test Rig meeting - minutes

Date of meeting: 11 August 2000

Venue: RAL

Present: P Flower, B Kennedy, M Sproston, A Turner, J Williams

1.  Mechanics

• JHW has designed support structure for baseplate - awaiting parts. 
• Floor in magnet area has been stripped and sealed. 
• Magnet radiation safety - advice from RP expert is to collect swarf for later testing.  If it is found to be active, it will be disposed of as low-level radioactive waste.
• MS has mounted stepper rmotor control box in rack and cabled it up.   Hopes to test Labview prorgam with stepper motor today.

2. Electronics

• Preamps - motherboards (and another 5-channel card) sent from Bristol on Wednesday, but have not yet arrived.  Next batch of cards not yet ordered by Bristol; no estimate yet on delivery date.
• Will need multichannel RS232 system for magnet and HT control.

3.  Plans for next two weeks:

• Build base plate support structure.
• Finish, test  and install anode current leakage box.
• Test a single VPT in one channel of the rig, as in item 1, using the stepper motor to set the angle.  This should show up any noise problems.
• Add magnet and HT controls to main LabView control program.
• Noise tests on Bristol preamp cards as soon as possible.
• Instrument and test complete row of 8 VPT holders as soon as leakage box & preamps are ready.
• Peter Hobson will visit RAL next Wednesday to see the test rig.

5.  AOB

• JHW will order digital camera today.  Has removed password protection on VPT web pages, at request of DJAC.  On leave next Thurs & Fri.
• He rig - RMB needs more information on He tests for NIM paper.   PSF will supply this.
• Glue testing rig - AMT/PSF have removed faulty pressure sensor.   Rig is now ready for drying experiments.  Will attempt to take humidity to below 25% - glue manufacturer recommends at least 35% for satisfactory drying.

Bruce Kennedy / 05 December 2003