University of Virginia Helium-3 Target Lab


E02-013 GEn-style Helium-3 Target Cell Inventory

Cell Name Polarization
(%)
Lasers/Beams
(#/#)
Laser Power
(W)
NMR Signal
(mV)
Spinup
(@235C)
Spindown
(@25C)
Cell Density
(gas system)
Cell Density
(pressure broadening)*
Pressure
(@255C)
Nominal Starting
Alkali Ratio K/Rb**
Mix
Label
LARGE
Anna 39%3/130W129.1mV7hrTBA8.01+/-0.07amg8.094+/-0.062amg14.0atm(20)8.11.04
31%2/120W102.1mV
24%1/110W78.7mV
Barbara53%5/297W6hrTBA7.56+/-0.07amg7.604+/-0.056amg13.2atm(20)7.28.04
43%3/130W
Dolly 42%3/130W76.1mV5.6hrhr7.39+/-0.07amg7.421+/-0.059amg12.5atm18.68.05.05-I
Edna 54%3/255W108.4mV4.9hr28hr7.40+/-0.07amg7.470+/-0.057amg12.5atm5.110.28.05
Gloria 58%3/253W5hr35hr7.37+/-0.07amg7.395+/-0.059amg12.5atm17.97.27.05
STANDARD
AL ttc 54%5/297W8hr26hr8.89+/-0.08amg8.905+/-0.069amg13.6atm19.96.06.05
53%5/149W
45%3/130W
Dexter 52%5/297W8hr18hr9.95+/-0.09amgN.A.15.1atm18.58.03.05
43%3/130W
Guests from W&M
Eva 54%2/260WN.A.33hr 7.5amg7.650+/-0.059amgTBA17.16.13.05-II
Simone 45%2/260WN.A.32hr8.5amg8.174+/-0.071amgTBA21.46.15.05-I

*Pressure Broadening results provided by Vladimir Nelyubin.

**Alkali Mixes provided by Peter Dolph. The vapor ratio is defined as K to Rb vapor density ratio at 235C.


Gas System and Buoyancy Measurement Volume and Density


Cell Name
V_tot
(cc)
V_pc
(cc)
V_tt
(cc)
V_tc
(cc)
density
(amg)
Anna 386.78303.732.8280.238.01
Barbara393.49306.813.4983.197.56
Dolly 378.22293.543.3781.307.39
Edna 374.85290.303.4081.157.40
Gloria 378.22298.783.5075.957.37
AL ttc 168.36 90.192.3375.848.89
Dexter 181.44 99.293.0879.079.95

raw buoyancy data


Cell Production History Timeline


Cell Name

Cell Type
Pull-off
(all by Willy)

Comments
Panache GEn-Large 12/19/2003oven heater soot covers Pumping Chamber
Mama Miastandard 07/02/2004located & tested at William & Mary
Sosa GEn-Large 08/12/2004Rb-only cell, under testing now at UVA (May 2009)
Anna GEn-Large 03/24/2005exploded in oven at UVA in 2008
Barbara GEn-Large 04/09/2005
AL ttc GEn-standard06/15/2005
Chloe GEn-Large 07/21/2005snapped at pull-off during cell fill
Dolly GEn-Large 08/17/2005back at UVA after in-beam during GEn (2009)
Ellen GEn-Large 08/31/2005pull-off popped off while pumping at 235C
Dexter GEn-standard09/22/2005crack developed on pull-off after pumping
Gloria GEn-Large 10/12/2005crack developed on pull-off after pumping
Edna GEn-Large 11/11/2005
Fiona GEn-Large 11/30/2005crack developed on pull-off after warming up in LHe dewar


* If you would like to post any target related information on this homepage or post any links to other pages, please contact Al Tobias


wat4y@virginia.edu
http://www.phys.virginia.edu/~wat4y/
Last Modified: May 5, 2009