Positrons

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Proposals

Collaboration

Work

Designs

HRRL beam Line installation

Experiments

PEPPo_Software

Simulations

Equipment

References

Neutron production

File:Huang NIMB229 2005.pdf

Positron_Yield_Estimate

PEPPo Comparison

The annihilation counter observed 1 e+ for every nA of electrons beam.  I was not sure what the compton polarimeter is observing given the large background.
Use the above to predict our rate if we run the HRRL at 80 mA peak current with 50 nsec wide pulses and a rep rate of 300 HZ.

<math>1~nA = 10^{-9}~C/s<math>

MDC Parts list

Parts received

Mar 10th 2012

Part# Quantity Discription Link
450005 1 view port big viewport for corosses
110022 1 Blank off Blank off
611005 2 feedthrough for cooling feedthrough for cooling
404048 1 Reduced T reduec T for ion pump

Apr 17th 2012

Part# Quantity Discription Link
450005 1 view port big viewport for corosses
100021 2 Flng, 4.5"x2.5"Rotatable long beam pipe flanges

Apr 23 2012

Long beam pipe through the wall is ready.


Apr 30th 2012

Part# Quantity Discription
1 Installation kit for chaber vacuum window


May 14th 2012

Part# Quantity Discription Link
9712007 1 Viewport for vaccum chamber viewport

May 18th 2012

Part# Quantity Discription Link
407005 1 6-way cross for Flag 3 6-way cross
9132004 1 10 pin electric feed through feed through

May 26th 2012

2 Faraday cups

Parts expecting

1) One 5 way cross;

1. 4-6way cross for 45 degree line

1) 5 way cross for 45 degree.

2) Blank-off or view port. (If we borrow the view port 0 degree, we need to buy a blank-off for 0 degree.)

HRRL order 45deg.png

Parts Quantity Link Delevary status
5-way cross 1 5-way cross
View Port 1 VPQ-300, quote from last time File:Hrrl-view-port-quote.pdf This item chaged to [MDC viewport for corosses] Delevered
Blank off 1 Blank off Delevered

2. 5-6 way cross for 90 degree line

HRRL order 90deg.png


Do we need Faraday Cup at the end of 90 degree?


Parts Quantity Link Delevary status
6-way cross 1 6-way cross
Faraday Cup 2 (1 for 45 degree and 1 for 90 degree) Faraday Cup, Buy this one Faraday Cup
View Port 1 VPQ-300, quote from last time File:Hrrl-view-port-quote.pdf This item chaged to [MDC viewport for corosses] Delevered

4. Flanges for 90 degree beam line

Parts Quantity Link Deleveray status
Flng, 4.5"x2.5"Rotatable 2 Flange 450-250 Delevered

5. Ion pump parts

Ion pump parts

Parts Parts Label Quantity Link Delevaray status
Reduced 3-way Cross (T) ReducingTee, 4.5"x2.75" 1 Reduced T Delevared.

6. Target chamber parts

Target chamber parts (HV = 10^{-8} Torr)

a.) 10- pin wiring feedthrough

http://www.mdcvacuum.com/displayproductcontent.aspx?d=MDC&p=i.1.1.2.1

b.) 4 flexible hoses for cooling lines (at least nitrogen gas hopefully liquid nitrogen)

http://www.mdcvacuum.com/displayproductcontent.aspx?d=MDC&p=m.6.2.4.1

c.) IR optical window for target temperature measurement

http://www.mdcvacuum.com/displayproductcontent.aspx?d=MDC&p=i.7.1.1.1

Parts Quantity Link Delevary status
10 - pin wiring feedthrough 1 Pin Through
4 flexible hoses for cooling lines 2 Cooling Hoses deleraved
IR optical window 1 Optical Window delevared

User_talk:foretony


User:Setisadi