Developments and Beam Studies for the Injectors APEX Workshop 2Nov06 ahrens.

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Presentation transcript:

Developments and Beam Studies for the Injectors APEX Workshop 2Nov06 ahrens

Planned activities for 2007 Black: APEX workshop - last year’s text Red: new listing for 07 Categorize as: Set up, Commissioning, or Study Exclude explicitly polarized proton work – Haixin will cover in separate talk

Subject black: as written for ’06 red:new subject for ‘07 blue: additional comments motivationTypeleader / players Model development / testing Booster, AGS, transfer lines new: “online” model emphasis, goal: feed model parameters to other applications (IPM, Orbit control) Machine performance understanding. AGS “bare” machine is not well modeled: tune, chromaticity, coupling Study Com Brown, Malitsky/ Ahrens, Tsoupas, Booster injection transverse apertures not pushed High intensity protons – and general understanding; new loss detectors StudyBrown/ Ahrens, Booster injection: Au31+ or Au32+gold intensityStudy Com Setup Steski, Gardner, Zeno Booster D6 septum magnet influence on booster injection Coexistence with NSRLStudyTsoupas/ Zeno, BtA foils performance measurement (if/when have new foils available) They are available, this item is second on startup agenda Quality (longitudinal, intensity) of gold beam for RHIC injection Study Setup Marr/ Ahrens, Zeno, Thieberger BtA transverse matching ongoing: need to have BtA model solid AGS beam quality: intensity, hori – polarization Com Setup Tsoupas/ Glenn, AGS vertical tune quads – new configuration Polarized proton accelerationSetupOperations AGS bunch merge (gold) replaced debunch/rebunch Longitudinal emittanceSetuprf group

Subject (gold beam)motivationTypeleader / players AGS tune meter / coherence monitor basic tunes ok, want chromaticity from coherence length Beam behavior up the AGS rampComAhrens,Bai/ Laster AGS IPMnew electronics, new software: more corrections, accept model input Study Com Setup Brown/ Skelly, Inst group AGS equilibrium orbit control and display hardware: fix missing BPMs, software: thorough revisit control, capability to accept model input ComAhrens/ Laster, Inst group AGS (proton) transverse emittance: CNI scan proton emittance – one more viewComHuang/Yip, Nemesure AGS injection transverse apertures not pushed – this for the non- snake machine High intensity proton – and general understanding StudyGardner/ Ahrens,Lee Transverse emittance cooling during AGS acceleration with Gold running and IPM improvements, 1st task: reproduce past results Understand- possible applications here and elsewhere StudyBlaskowicz, Brown, Ahrens, Trbojevic

Subject (gold beam)motivationTypeleader / players AGS Response Matrix meas data taken semi automatically, not yet systematically analyzed understand AGS optics/systems Added complication: with one tune near an integer (pol prot) planes cross-talk strongly – coupling emphasized StudyBai,Harvey, Morris/Satogata, Niedziela, Schoefer AtR arc trajectory tuning with RHIC at Store Maintain high transfer beam quality: transverse, intensity ComGlenn,Drees/ AtR new stripping foil behavior Prep for a Gold runStudy Setup Tsoupas/ Ahrens AtR new W line flags (thick, uniform) Transverse emittance measurement Study Com Tsoupas/Glenn AtR longitudinal emittance match Pumping worked as expected, but the resulting beam was not what RHIC needed. RHIC proton beam qualityCom Setup Blaskowicz/ rf group