ANU Injection & Abort Lines

3/19/2007 Nova-doc-18143/19/2007 Nova-doc-1814 ANU Inject & Abort dej ANU Inject & Abort dej 11

ANU Injection & Abort LinesANU Injection & Abort LinesDave JohnsonDave Johnson

ANU Extraction Line and ANU Extraction Line and RR30RR30

Meiqin XiaoMeiqin XiaoMarch 19, 2007March 19, 2007

223/19/2007 Nova-doc-18143/19/2007 Nova-doc-1814 ANU Inject & Abort dej ANU Inject & Abort dej

OutlineOutlineInjection LineInjection Line

MotivationMotivation LayoutLayout

Modifications to 8 GeV lineModifications to 8 GeV lineModifications to RecyclerModifications to Recycler

LatticeLatticeMI8 to RecyclerMI8 to RecyclerMI8 to MI /mini-BooneMI8 to MI /mini-Boone

ApertureAperture Recycler InjectionRecycler Injection Magnets Magnets Power SuppliesPower Supplies InstrumentationInstrumentation

Abort LineAbort Line Existing LatticeExisting Lattice Recycler modificationsRecycler modifications Kicker Strength/TrajectoriesKicker Strength/Trajectories Kick ErrorsKick Errors ApertureAperture

SummarySummary

1531-v1 Magnet and Instrumentation Counts for 1531-v1 Magnet and Instrumentation Counts for Nova RecyclerNova Recycler

1529-v1 Recycler Abort Line with Gap Clearing 1529-v1 Recycler Abort Line with Gap Clearing Kickers for the NovaKickers for the Nova

1501-v1 Recycler Injection Line Options for the 1501-v1 Recycler Injection Line Options for the Nova Project Nova Project

1495-v1 Recycler Injection Kicker Configuration in 1495-v1 Recycler Injection Kicker Configuration in the Novathe Nova

1596-v5 Kicker for PP2 Specifications1596-v5 Kicker for PP2 Specifications

Related Documents


MotivationMotivationAlthough the initial solution produced an acceptable optical solution,

it required large ADC magnets to be hung from wide tunnel ceiling over mini-Boone line,

potential field leakage into Recycler.Features of new design.

hybrid vertical bending (next slide) use permanent magnets (“easy” installation) Only 2 powered magnets (switch & Lambertson)

fewer PS, reduced controls, less cable, less cooling, SB area reduced impact on tunnel utilities (hopefully) requires new mirror magnet design requires construction of existing Lambertson design (MLA)


Modifications to 8 GeV line846:

Replace LEP with HDCAdd MQT trim (ramped)

847:Replace LEP with VDCAdd MQT trim (ramped)

848:Replace LEP with HDCAdd MQT trim (ramped)Shift BPM upstream Install ADC 10” downstream of SQA steel

849:Shift quad 849 downstream by 80 inchesMove PDD-040 to “upper” line and replace w/ PDD_M mirror magnet

Cartoon of LayoutCartoon of Layout

847

101

103

Recycler

8 Gev line

100

850

102104

SWITCH MAGNET (15 Hz)V1 (ADCW) 32.8 mr

V2 (PDD) 19.2 mr

HBEND (35 mr)

VLAM (MLA) 13.6 mr (DC)

K

HKICK (1.208 mr)5 kickers 2 bumpers

848

MI8

849852 851

103 102

MI

QR853

QR852

Mirror magnets (new)

Mini-Boone switch magnet

Modifications to Recycler (besides ECOOL removal)101:

Move v101 corrector to upstream corrector slotDesign beam pipe from 101 to Lambertson (crotch)

102:Move h102 corrector and BPM (hp102) to middle between A & B quadInstall MI beam pipe from Lambertson to Q103

846

New MQT trims

MQT trims

Trim RQMx MQT RQMx MQT RQMX BPM MW


Q846 Q846

Replace LEP with HDCReplace LEP with HDCAdd MQT trim (ramped)Add MQT trim (ramped)Vacuum modificationsVacuum modifications


Q847Q847

Replace LEP with VDCReplace LEP with VDCAdd MQT trimAdd MQT trimVacuum modifications (require shift SQA ?)Vacuum modifications (require shift SQA ?)


Q848Q848

Replace LEP with HDCReplace LEP with HDCAdd MQT trimAdd MQT trimShift BPM upstream Shift BPM upstream Vacuum modificationsVacuum modificationsInstall ADC 10” downstream of SQA steelInstall ADC 10” downstream of SQA steel


Summary of ModificationsSummary of ModificationsModifications to 8 GeV lineModifications to 8 GeV line

846: 846: Replace LEP with HDCReplace LEP with HDCAdd MQT trim (ramped)Add MQT trim (ramped)

847:847:Replace LEP with VDCReplace LEP with VDCAdd MQT trimAdd MQT trim

848:848:Replace LEP with HDCReplace LEP with HDCAdd MQT trimAdd MQT trimShift BPM upstream Shift BPM upstream Install ADC 10” downstream of SQA steelInstall ADC 10” downstream of SQA steel

849:849:Shift quad 849 downstream by 80 inchesShift quad 849 downstream by 80 inchesMove PDD-040 to “upper” line and replace w/ PDD_M mirror magnetMove PDD-040 to “upper” line and replace w/ PDD_M mirror magnet

Modifications to Recycler (besides ECOOL removal)Modifications to Recycler (besides ECOOL removal) 101: 101:

Move v101 corrector to upstream corrector slotMove v101 corrector to upstream corrector slotDesign beam pipe from 101 to Lambertson (crotch)Design beam pipe from 101 to Lambertson (crotch)

102:102:Move h102 corrector and BPM (hp102) to middle between A & B quadMove h102 corrector and BPM (hp102) to middle between A & B quadInstall MI beam pipe from Lambertson to Q103 Install MI beam pipe from Lambertson to Q103


Match into RecyclerMatch into Recycler

V(up) V(dn) VLAM (dn)

Q848

Q102(RR)

VLAM K104Q846

All PM quads within standard Recycler strength


Match to MI/mini-BooneMatch to MI/mini-Boone

Quad trims (ramped) Mini-Boone switch

Q849 Q851

LAM101 (MI)K103

Q101Q846


Beamline ApertureBeamline ApertureProvide for loss free Provide for loss free transmissiontransmissionExpect emittance of 15-20 Expect emittance of 15-20 (history shows with large tails)(history shows with large tails)Would like to provide at least 1 Would like to provide at least 1 for loss free steering for loss free steeringAssume 99% in 6Assume 99% in 6 with 1%out with 1%out 88 -> -> use 10use 10 with 25 with 25 beam beam

Vertical aperture

Min horizontal aperture

Magnet type Shape Hor Ver Hor Ver

[in] [in] [mm] [mm]

ADCW Special 2.0 5.0 51 127

PDD Elliptical 3.8 1.8 95 44

PDD_rolled Elliptical 1.8 3.8 44 95

Quad Round 3.0 3.0 76 76

MI beam pipe Elliptical 4.6 2.0 117 51

Recycelr beam pipe Elliptical 3.8 1.8 95 44

MLA (field region) existing rectangular 1.7 4.7 44 120

MLA (field region) modified rectangular 2.0 4.7 51 120

between dipoles Round 4.0 4.0 102 102

See next slide


Recycler InjectionRecycler Injection

Nominal 54 mm separationNominal 54 mm separationInj. Trajectory || to straight , inj. angle Inj. Trajectory || to straight , inj. angle provided by Lambertson roll (~5provided by Lambertson roll (~5oo))Nominal kick angle 1.208 mr (71.6 G-m)Nominal kick angle 1.208 mr (71.6 G-m)MLA (field region increase) 44->50mmMLA (field region increase) 44->50mmMI beam pipe Lambertson->Q103MI beam pipe Lambertson->Q103

circulating injectionLambertson Kickers


Summary of Required MagnetsSummary of Required MagnetsType Comment Total Modify Construct Recycle

RQMx Recycler style 20 in. permanent magnet quad 14 14 0 0

PDD_M PDD mirror magnet, new design 3 0 3 0

PDD PDD 8 Gev style double dipole, existing style 5 0 3 2*

PDD_R PDD dipole design, reduced field 2 0 2 0

SGD_M Recycler dispersion suppressor mirror magnet 0 0 0 0

ADCW Modified B1 style to open aperture 1 1 0 0

MLA MI style injection Lambertson, new,modified 1 0 1 0

ILA MI style Lambertson, existing, move 0 0 0 0

MQT Old MR style quad trim 13 0 0 13

HDC Old MR style horizontal corrector used in Recycler 2 0 0 2

VDC Old MR style vertical corrector used in Recycler 2 0 0 2

MCH LEP Horizontal corrector 2 0 0 2

MCV LEP vertical corrector 2 0 0 2

**One from spares and one moved from 8Gev line and replaced with mirror magnet


Power Supply SummaryPower Supply SummarySwitching Magnet (15 Hz)Switching Magnet (15 Hz)

Required current: 611 AmpsRequired current: 611 Amps Magnet resistance 38.4 mOhmsMagnet resistance 38.4 mOhms New supply patterned after mini-Boone switcher supplyNew supply patterned after mini-Boone switcher supply

Lambertson (DC)Lambertson (DC) Required current (with MLA modification): 396 AmpsRequired current (with MLA modification): 396 Amps Voltage:Voltage:

Quad trims (15 Hz)Quad trims (15 Hz) Required current: < 20ARequired current: < 20A Resistance: 1.6 ohms Inductance: 67 mHResistance: 1.6 ohms Inductance: 67 mH Slew rate: ~400 A/sec Slew rate: ~400 A/sec Voltage: 42 V @ 10A max slew rateVoltage: 42 V @ 10A max slew rate Number of channels: 3Number of channels: 3

Quad trims (DC)Quad trims (DC) Required current: < 10 AmpsRequired current: < 10 Amps Voltage: 16 voltsVoltage: 16 volts Number of channels: 5Number of channels: 5

Dipole trims (DC)Dipole trims (DC) Required current: < 10 AmpsRequired current: < 10 Amps ResistanceResistance Number of channels: 5 newNumber of channels: 5 new


InstrumentationInstrumentation

Utilize all recycled hardware and electronics (MI, Recycler, RR22, RR32, A1)Utilize all recycled hardware and electronics (MI, Recycler, RR22, RR32, A1)Require position measurement for steering/matching (1 bump)Require position measurement for steering/matching (1 bump)Require profile measurement matching -> MultiwiresRequire profile measurement matching -> MultiwiresMonitor loss (share existing loss monitors while adding a few around strategic Monitor loss (share existing loss monitors while adding a few around strategic places like switch magnets and Lambertsons) - details not yet finalizedplaces like switch magnets and Lambertsons) - details not yet finalizedIPM (???) where ??IPM (???) where ??

Type Comment Total Modify Construct Recycle

8GBPM_H 8 GeV style BPM 4" aperture Hor 2 0 0 2

8GBPM_V 8 GeV style BPM 4" aperture Ver 3 0 0 3

RRBPM_H Recycler Style BPM HOR 0 0 0 0

RRBPM_V Recycler style BPM Ver 0 0 0 0

MW Multiwire (4 line & 4 ring) 8 0 0 8

Toroid Current toroid (1 line & 1 ring) 2 0 0 2


ABORT LINEABORT LINE


Existing ABORT LINEExisting ABORT LINE

Recycler abort line shares the beam absorber with the MI. Recycler abort line shares the beam absorber with the MI. Contains vacuum break downstream of the Lambertson (do we keep ?)Contains vacuum break downstream of the Lambertson (do we keep ?)Abort kicker double duty as pbar extraction kicker (pbar function will go away with Nova)Abort kicker double duty as pbar extraction kicker (pbar function will go away with Nova)

NEWNEW > Want to install gap clearing kickers so the beam in the injection gap is cleanly sent to the absorber > Want to install gap clearing kickers so the beam in the injection gap is cleanly sent to the absorber

400

LAM402KICKER

LAM402

MI EnclosureWall

Dump

402

5

Assume ~5E13/1.33 secAssume 2% in gap1E12/1.3sec 1 kW

Oct 2000Recycler e-log

RR

MI


New RR40 ConfigurationNew RR40 Configuration

Move abort kicker between G400A and Q400B Move abort kicker between G400A and Q400B Install Gap clearing kickers downstream of Q400BInstall Gap clearing kickers downstream of Q400BFit to same position at entrance to Lambertson with both kickers-> Fit to same position at entrance to Lambertson with both kickers->

difference in angle at entrance to Lambertson 100 ur -> 0.3 mm difference at difference in angle at entrance to Lambertson 100 ur -> 0.3 mm difference at Lambertson exitLambertson exit

Abort kicker nominal angle 1.07 mr and full turn kicker (>9.5 us) @ 0.77 HzAbort kicker nominal angle 1.07 mr and full turn kicker (>9.5 us) @ 0.77 HzGap clearing: nominal angle 1.18 mr with ~1.6 us flattop / 57ns rise/fall @ 15 HzGap clearing: nominal angle 1.18 mr with ~1.6 us flattop / 57ns rise/fall @ 15 Hz

G400A

Q400B

G341A

Abort Kicker

5 Gap Clearing Kickers

2 Bumper Kickers

G341B

HP400

VP400

HT400


Orbits ‘n suchOrbits ‘n such

Closed orbit 22 mm inside Closed orbit 22 mm inside Extraction position 32 mm outside (both)Extraction position 32 mm outside (both)Phase advance Phase advance

H: kick-Lam 90H: kick-Lam 90oo Lam-absorber 180 Lam-absorber 180oo

V: kick-Lam 90V: kick-Lam 90oo Lam-absorber 90 Lam-absorber 90oo

5% kick error (either) produces 2.7mm 5% kick error (either) produces 2.7mm displacement at both the Lambertson and displacement at both the Lambertson and absorber. -> set flattop tilt to 4%absorber. -> set flattop tilt to 4%

Abort SWIC location

Closed orbit

abort gap clearingLamb

insi

deou

tsid

e

Trajectory with 5% error


AperturesAperturesAbort line contains both elliptical Abort line contains both elliptical and round beam pipe (4”)and round beam pipe (4”)Several tight spots for 10Several tight spots for 10 of 25 of 25Comfortable for 6Comfortable for 6Modify envelope (?) with trim quadsModify envelope (?) with trim quads

H ellipse

V ellipse

4” round 24” round

H V V VL

Red-horizontal Blue-vertical

Beam envelope (10) for 25 H ellipse

4” round 24” round

H V V VL

V ellipse

Beam envelope (6) for 25


Lambertson ApertureLambertson Aperture

Cross section of Recycler beam pipe Cross section of Recycler beam pipe (thru Q402 upstream of Lambertson) (thru Q402 upstream of Lambertson) and Lambertson apertureand Lambertson apertureNo problem with commissioning beamNo problem with commissioning beamBig beam- tight Big beam- tight

Replace Recycler beam pipe (401-402) Replace Recycler beam pipe (401-402) with MI ellipsewith MI ellipse

Lambertson remains tight for 10Lambertson remains tight for 10 25 25

Extracted beam

Commissioning Beam (10)

Big Beam (25)

Approx MI pipe


SummarySummaryInjection Line Design FinalizedInjection Line Design Finalized

Required magnets and fields specifiedRequired magnets and fields specified

Abort geometry and Kicker strengths specifiedAbort geometry and Kicker strengths specified3D Model of each Injection and Extraction areas3D Model of each Injection and Extraction areas

(\\beamssrv1\mechdrft\public\meiqin)(\\beamssrv1\mechdrft\public\meiqin)

Next steps:Next steps: Look at tunnel /utility interferencesLook at tunnel /utility interferences Verify modifications to existing beamlinesVerify modifications to existing beamlines Stand designStand design Vacuum system designVacuum system design