1. MSDS is attached
2. Does not include cost of fluor or wavelength shifter, which depends on choice of detector/PMT
1. Are we still using a 2-meter diam. sphere surrounded by the hallway and toroid?
2. A 2-meter diam. sphere = 922 gal. (imperial) = 1,107 gal. (U.S.)
a. I think Canada uses imperial.
b. I think Petresa uses 50-gallon barrels.
c. Assume 1,000 gallons @ $500 per 50-gallon drum
1. Borexino CTF nylon provided by Bayer Chemical which is now Lanxess. I am still trying to get through to a representative, I’ve talked to the secretary of the CEO and I’ve left numerous voice mail messages at the number she gave me.
2. Durethane, semi-crystalline
3. Sales rep for that division: Brendan Dooley (412) 809-3545
4. President or CEO of company: Randy Dearth (412) 809-3600 (reaches a secretary or assistant who gave contact info for Brendan Dooley)
1. Contact person: Katsushi Arisaka
2. $5,000 per detector
3. Does not include Borexino-type light concentrator, which may not be required with lower radioactivity of QUPIDs (can be positioned closer to fiducial volume)
1. Assuming the front face of a 3” diam. detector is inscribed by a square of area 3” x 3”, and that these squares completely cover the surface of a 2-meter diam. sphere, ~2170 detectors are required.
2. However, 6” QUPIDs may also be an option; the number to completely cover the sphere would be ~542.
3. Complete coverage is not necessary; the Borexino CTF only used 100 PMTs.
4. Let’s assume 100 QUPIDs.
1. Katsushi has a cost estimate for a readout chain (HV power supply, pre-amp, ADC) of $2,000 / channel.
2. I have his design along with the models and specs which was sent out to the MAX collaboration, but I’m not sure if that is privileged information since it is still under development at UCLA.
1. We need some sort of support structure for QUPIDs (QSUP) even though we want to minimize the amount of materials within the “inner sanctum.“
2. The detectors would of course surround the fiducial volume of LAB, and could be in an outer “layer” of LAB or water, enclosed perhaps by another nylon bag a la Borexino CTF.
3. If we take the upper estimate for the fiducial volume nylon bag above, i.e., $1M, then maybe we just need to add in the cost of a QSUP.