RHIC Polarized proton operation (open access)

RHIC Polarized proton operation

The Relativistic Heavy Ion Collider (RHIC) operation as the polarized proton collider presents unique challenges since both luminosity(L) and spin polarization(P) are important. With longitudinally polarized beams at the experiments, the figure of merit is LP{sup 4}. A lot of upgrades and modifications have been made since last polarized proton operation. A 9 MHz rf system is installed to improve longitudinal match at injection and to increase luminosity. The beam dump was upgraded to increase bunch intensity. A vertical survey of RHIC was performed before the run to get better magnet alignment. The orbit control is also improved this year. Additional efforts are put in to improve source polarization and AGS polarization transfer efficiency. To preserve polarization on the ramp, a new working point is chosen such that the vertical tune is near a third order resonance. The overview of the changes and the operation results are presented in this paper. Siberian snakes are essential tools to preserve polarization when accelerating polarized beams to higher energy. At the same time, the higher order resonances still can cause polarization loss. As seen in RHIC, the betatron tune has to be carefully set and maintained on the ramp and during the store …
Date: March 28, 2011
Creator: Huang, H.; Ahrens, L.; Alekseev, I. G.; Aschenauer, E.; Atoian, G.; Bai, M. et al.
Object Type: Article
System: The UNT Digital Library
Brownwood Bulletin (Brownwood, Tex.), Vol. 114, No. 141, Ed. 1 Friday, March 28, 2014 (open access)

Brownwood Bulletin (Brownwood, Tex.), Vol. 114, No. 141, Ed. 1 Friday, March 28, 2014

Weekly newspaper from Brownwood, Texas that includes local, state and national news along with advertising.
Date: March 28, 2014
Creator: Hanrahan, Thom
Object Type: Newspaper
System: The Portal to Texas History
Hilltop Views (Austin, Tex.), Vol. 31, No. 8, Ed. 1 Wednesday, March 28, 2012 (open access)

Hilltop Views (Austin, Tex.), Vol. 31, No. 8, Ed. 1 Wednesday, March 28, 2012

Weekly student newspaper from St. Edward's University in Austin, Texas that includes news and information of interest to the college community along with advertising.
Date: March 28, 2012
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Cherokeean Herald (Rusk, Tex.), Vol. 163, No. 5, Ed. 1 Wednesday, March 28, 2012 (open access)

Cherokeean Herald (Rusk, Tex.), Vol. 163, No. 5, Ed. 1 Wednesday, March 28, 2012

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date: March 28, 2012
Creator: Gonzalez, Terrie
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The Optimist (Abilene, Tex.), Vol. 100, No. 47, Ed. 1 Wednesday, March 28, 2012 (open access)

The Optimist (Abilene, Tex.), Vol. 100, No. 47, Ed. 1 Wednesday, March 28, 2012

Bi-weekly student newspaper from Abilene Christian University in Abilene, Texas that includes local, state and campus news along with advertising.
Date: March 28, 2012
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System: The Portal to Texas History
Texas Jewish Post (Dallas, Tex.), Vol. 67, No. 13, Ed. 1 Thursday, March 28, 2013 (open access)

Texas Jewish Post (Dallas, Tex.), Vol. 67, No. 13, Ed. 1 Thursday, March 28, 2013

Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.
Date: March 28, 2013
Creator: Wisch-Ray, Sharon
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System: The Portal to Texas History
Elgin Courier (Elgin, Tex.), Vol. 128, No. 13, Ed. 1 Wednesday, March 28, 2018 (open access)

Elgin Courier (Elgin, Tex.), Vol. 128, No. 13, Ed. 1 Wednesday, March 28, 2018

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Date: March 28, 2018
Creator: Wright, Kevin & Jette, Lauren
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The Altus Times (Altus, Okla.), Vol. 112, No. 251, Ed. 1 Wednesday, March 28, 2012 (open access)

The Altus Times (Altus, Okla.), Vol. 112, No. 251, Ed. 1 Wednesday, March 28, 2012

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: March 28, 2012
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Denton Record-Chronicle (Denton, Tex.), Vol. 111, No. 238, Ed. 1 Saturday, March 28, 2015 (open access)

Denton Record-Chronicle (Denton, Tex.), Vol. 111, No. 238, Ed. 1 Saturday, March 28, 2015

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Date: March 28, 2015
Creator: Parks, Scott K.
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The Port Lavaca Wave (Port Lavaca, Tex.), Vol. 126, No. 26, Ed. 1 Wednesday, March 28, 2018 (open access)

The Port Lavaca Wave (Port Lavaca, Tex.), Vol. 126, No. 26, Ed. 1 Wednesday, March 28, 2018

Weekly newspaper from Port Lavaca, Texas that includes local, state, and national news along with advertising.
Date: March 28, 2018
Creator: French, Tania
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The Altus Times (Altus, Okla.), Vol. 118, No. 62, Ed. 1 Tuesday, March 28, 2017 (open access)

The Altus Times (Altus, Okla.), Vol. 118, No. 62, Ed. 1 Tuesday, March 28, 2017

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: March 28, 2017
Creator: Steinkopff, Eric
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System: The Gateway to Oklahoma History
The Nocona News (Nocona, Tex.), Vol. 108, No. 38, Ed. 1 Thursday, March 28, 2013 (open access)

The Nocona News (Nocona, Tex.), Vol. 108, No. 38, Ed. 1 Thursday, March 28, 2013

Weekly newspaper from Nocona, Texas that includes local, state, and national news along with advertising.
Date: March 28, 2013
Creator: Mesler, Tracy R. & Mesler, Linda L.
Object Type: Newspaper
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Panhandle Herald (Panhandle, Tex.), Vol. 125, No. 37, Ed. 1 Thursday, March 28, 2013 (open access)

Panhandle Herald (Panhandle, Tex.), Vol. 125, No. 37, Ed. 1 Thursday, March 28, 2013

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Date: March 28, 2013
Creator: Wink, Shaun
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Sweetwater Reporter (Sweetwater, Tex.), Vol. 113, No. 115, Ed. 1 Monday, March 28, 2011 (open access)

Sweetwater Reporter (Sweetwater, Tex.), Vol. 113, No. 115, Ed. 1 Monday, March 28, 2011

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Date: March 28, 2011
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Coleman Chronicle & Democrat-Voice (Coleman, Tex.), Vol. 137, No. 13, Ed. 1 Wednesday, March 28, 2018 (open access)

Coleman Chronicle & Democrat-Voice (Coleman, Tex.), Vol. 137, No. 13, Ed. 1 Wednesday, March 28, 2018

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Date: March 28, 2018
Creator: Claywell, Trena
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System: The Portal to Texas History
Van Banner (Van, Tex.), Vol. 17, No. 35, Ed. 1 Thursday, March 28, 2013 (open access)

Van Banner (Van, Tex.), Vol. 17, No. 35, Ed. 1 Thursday, March 28, 2013

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Date: March 28, 2013
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The Light and Champion (Center, Tex.), Vol. 141, No. 13, Ed. 1 Wednesday, March 28, 2018 (open access)

The Light and Champion (Center, Tex.), Vol. 141, No. 13, Ed. 1 Wednesday, March 28, 2018

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Date: March 28, 2018
Creator: Fountain, Steve
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The Albany News (Albany, Tex.), Vol. 137, No. 45, Ed. 1 Thursday, March 28, 2013 (open access)

The Albany News (Albany, Tex.), Vol. 137, No. 45, Ed. 1 Thursday, March 28, 2013

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Date: March 28, 2013
Creator: Lucas, Melinda L.
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The Winkler County News (Kermit, Tex.), Vol. 78, No. 12, Ed. 1 Thursday, March 28, 2013 (open access)

The Winkler County News (Kermit, Tex.), Vol. 78, No. 12, Ed. 1 Thursday, March 28, 2013

Weekly newspaper from Kermit, Texas that includes local, state and national news along with advertising.
Date: March 28, 2013
Creator: Parks, Phil
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The Panola Watchman (Carthage, Tex.), Vol. 138, No. 25, Ed. 1 Sunday, March 28, 2010 (open access)

The Panola Watchman (Carthage, Tex.), Vol. 138, No. 25, Ed. 1 Sunday, March 28, 2010

Semiweekly newspaper from Carthage, Texas that includes local, state, and national news along with advertising.
Date: March 28, 2010
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Mount Vernon Optic-Herald (Mount Vernon, Tex.), Vol. 139, No. 35, Ed. 1 Thursday, March 28, 2013 (open access)

Mount Vernon Optic-Herald (Mount Vernon, Tex.), Vol. 139, No. 35, Ed. 1 Thursday, March 28, 2013

Weekly newspaper from Mount Vernon, Texas that includes local, state and national news along with advertising.
Date: March 28, 2013
Creator: Bush-Reves, Lillie
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The Express-Star (Chickasha, Okla.), Ed. 1 Wednesday, March 28, 2012 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Wednesday, March 28, 2012

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Date: March 28, 2012
Creator: DeSilver, Debi
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Polk County Enterprise (Livingston, Tex.), Vol. 131, No. 25, Ed. 1 Thursday, March 28, 2013 (open access)

Polk County Enterprise (Livingston, Tex.), Vol. 131, No. 25, Ed. 1 Thursday, March 28, 2013

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Date: March 28, 2013
Creator: Reddell, Valerie
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Denton Record-Chronicle (Denton, Tex.), Vol. 112, No. 239, Ed. 1 Monday, March 28, 2016 (open access)

Denton Record-Chronicle (Denton, Tex.), Vol. 112, No. 239, Ed. 1 Monday, March 28, 2016

Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.
Date: March 28, 2016
Creator: Parks, Scott K.
Object Type: Newspaper
System: The Portal to Texas History