A “BTeV” Hybrid Pixel Telescope for MTest David Christian May 4, 2007.
SY120/MTest Beam Upgrades Rick Coleman AEM 10 March, 2008
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Transcript of SY120/MTest Beam Upgrades Rick Coleman AEM 10 March, 2008
SY120/MTest Beam Upgrades
Rick ColemanAEM
10 March, 2008
Switchyard 120 Project
Switchyard 120 project
Phase I low intensity beams to Meson- Completed 2002-connection to Main Injector & 800 GeV SY- replace cryo. left bends encl C with conventional magnets
Phase II clean transmission for High Intensity - Not Done-add quads F2, F3 manholes-move electrostatic septa from F1 encl. to M01 enclosure-rework M01 3-way split -rework (eliminate) “Meson Train” target box/collimators
Meson Test Beam FacilityMovable upstream 25 cm Al target Movable downstream 30cm target location
Mtest secondary beamline
MTest Beam Layout and Modes
Proton Mode: 120 GeV protons
transmitted through upstream target
Proton Mode: 120 GeV protons
transmitted through upstream target
Pion Mode: 8-66 GeV beam tuned for
secondaries from upstream target
Pion Mode: 8-66 GeV beam tuned for
secondaries from upstream target
Low Energy Pion Mode: 1-32 GeV beam tuned for
secondaries from downstream target
Feb 2007
Low Energy Pion Mode: 1-32 GeV beam tuned for
secondaries from downstream target
Feb 2007
Adding a quad doublet to Switchyard F3 Manhole
F3 Manhole Quad Installation
F3 Manhole Quad Installed
Special Thanks to:
AD/Mech (Mike Petkus, Chris Ader, Willie Stitts, Paul Gentry, Cliff
Foster, John Featherstone, Bob Albrecht, Bob Slazyk), AD/EE (Julius Lentz, Bryan Falconer )
PPD/Alignment, PPD/Mechanical Installation
Improvement with new F3 quads
BeforeMT4/F1 ~40%
AfterMT4/F1 ~80%
More Spill Options
Currently operating with a 4 second long slow spill once per minute (6 sec. total, 12 hours/day or 5%)
We have in the past changed from 4 sec to 1 sec,but done manually it required a handful of expertsone or more shifts
• 4 sec or 1 sec Slow spill length change automated-Operations changes event type and few parameters (Denton Morris, Dave Capista, Wally Kissel, Paul Allcorn, Peter Prieto, Charlie Briegel, Chuck Brown)
•“Pings” 2ms width slow resonant, ~5 pings per pulse
Changes to Main Injector QXR for Pings
1. Added an external 150V 15A Power supply for Pings.2. Switch added in QXR Regulator so it can add Ping current on
during spill.3. Controls hardware added so Ping events ($33) through TCLK. Up
to 8 events per spill.4. MI-30 test that QXR can extracts beam with a 1 sec cycle and a 4
sec cycle and Pings can be generated during either one.
Peter Prieto
50 amps witha 2ms duration
Need to test QXR driver software and then ready for beam test.
MILESTONE: SWITCHYARD OPERATES REFRIGERATORL-R, R. Andrews, J. McCarthy, J. Appel discuss expansion engine operation June 1978
Backup Slides
MTest
Switchyard
P3
SY120 = P3 -> Switchyard -> MTest
SY120 Beam Line
MTest Detectors
PWCTOF CerenkovSwic
Beam Energy (GeV)
Rate at Entrance to Facility (per spill)
Rate at Exit of Facility (per spill)
%Pions, Muons**
% Electrons**
16 132,000 95,000 82% 18%
8 89,000 65,000 42% 58%
4 82,000 51,000 26% 72%
2 88,000 38,000 34% 65%
1 79,000 23,000 <50% >50%
Beam Energy (GeV)
Rate at Entrance to Facility (per spill)
Rate at Exit of Facility (per spill)
%Pions, Muons**
% Electrons**
16 86,000 59,000 100% 0%
8 31,000 18,000 95% 5%
4 5,400 1,300 73% 16%
2 6,000 480 51% 42%
1 5,000 120 ~60% ~40%
Rates* without lead scatterer
Rates* with lead scatterer
*Rates here are normalized to 1E11 at MW1SEM
**Measured at exit of facility with PbG calorimeter
Peter Prieto in front of pulsing circuit for QXR
QXR quadrupole in Main Injector
Fast pulse performance in Tevatron - 1997
Many thanks to Accelerator Division for their efforts
QXR MVME 2400Processor andCAMAC_Serial
Link DriverMI 60
5760 Link MI60 to MI30
QXR SLOW Extraction
Power Supply30V 65A
CAMAC181
DAC 119
DAC 119
Ping Program
QXR Program
Status
IBEAM DIGITIZED
EnCODED ONMDAT
DCCT MI 30I Beam
MI30Air Core Quad
Q304
MI30Air Core Quad
Q302
10mOhm Shunt
30V 50A
150V
17uF
Crowbar
FET BANK
50uH
GTO
GTO DriverCircuit