Bent Solenoid C or S type. Akira SATO Osaka University Jun COMET-mu2e joint workshop
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1 Bent Solenoid C or S type Akira SATO Osaka University Jun. 9 COMET-mu2e joint workshop
2 Contents COMET vs mu2e C/S-type Bend Solenoid for COMET 2
3 COMET vs mu2e
4 COMET vs MECO/mu2e Target C or W W, Au, Pt??? Mirror Field no yes Shield Shape around the target Curved Solenoid Collimeter C-shaped no Akira SATO COMET Collaboration KEK, 1 Dec. 8 S-shaped yes 4
5 COMET vs MECO using g4beamline Code : g4beamline-1.15 Capture solenoid and rad. shield COMET : from proposal MECO : from mu2e document server Mu2e_Muon_Beamline.in (version 3) with bug fix proton beam and target 8GeV/c.4M protons beam size : rms=1 mm for x&y target : Au, mm, r=6 mm, tiltx=12.22, tilty=1.8deg Physics model QGSP with default parameters Akira SATO COMET Collaboration KEK, 1 Dec. 8 5
6 Result Plot Ptot for Mu- before stopping target.9μ-/proton COMET stopping efficiency 3% cf. from PAC presen with W target.71μ-/protons stopping efficiency 26% g4beamline x15 protons on Au target QGSP.59μ-/proton stopping efficiency??? Mu2e cf. from NuFact8 talk.43μ-/protons stopping efficiency 58% P(MeV/c)
7 Result Plot Ptot for Mu- before stopping target.9μ-/proton COMET stopping efficiency 3% cf. from PAC presen with W target.71μ-/protons stopping efficiency 26% g4beamline x15 protons on Au target QGSP momentumplotmuons Muon Momentum 7.59μ-/proton stopping efficiency??? 5 Mu2e cf. from NuFact8 talk.43μ-/protons stopping efficiency 58% P(MeV/c)
8 Plot Ptot for Mu- before stopping target COMET momentumplotmuons Muon Momentum g4beamline x15 protons on Au target QGSP 7 5 Mu2e P(MeV/c)
9 C/S-type Bend Solenoid for COMET
10 Type of Bend Solenoid All setting is same except for C/S. C-type S-type The inner radius of the bend sol. is 175 mm. 1
11 C-Type 11
12 S-Type 12
13 Codes and Hadron Production Code : g4beamline Capture solenoid and rad. shield COMET : from proposal proton beam and target 8GeV/c 1M protons beam size : rms=2 mm for x&y target : W, mm, r=6 mm, tilt=1, tilty=2deg Hadron production MARS at surface of the production target 13
14 Capture Solenoid 14
15 15
16 6 Bs(Tesla) Bs(Tesla) Magnetic Field by tilted coil s(mm) C-type 3 s(mm) Bx(Tesla) Bx(Tesla) s(mm) 3 s(mm) By(Tesla) By(Tesla) s(mm) 25 3 s(mm) S-type 16
17 Bs(Tesla) Magnetic Field : S-type vs MECO 6 S-type for COMET 4 2 By(Tesla) MECO.1 3 s(mm) Bx(Tesla) s(mm) 17 2
18 C-type vs S-type without Collimators just a status report
19 Type of Bend Solenoid monitor33 monitor33 C-type S-type 19
20 Total Momentum of µ- at monitor33 Momentum of µ - at monitor33 h1 Underflow Overflow Integral (counts) (counts) Momentum of µ - at monitor33 h1 Underflow Overflow Integral P(MeV/c) C-type P(MeV/c) S-type
21 Total Momentum of µ- at monitor33 (counts) Momentum of µ - at monitor33 h Underflow Overflow Integral (counts) Momentum of µ - at monitor33 h1 Underflow Overflow Integral C-type P(MeV/c) S-type P(MeV/c) 21
22 Total Momentum of e- at monitor33 - Underflow Overflow Integral Underflow Overflow Integral h3 Momentum of e at monitor (counts) (counts) - h3 Momentum of e at monitor33 P(MeV/c) C-type P(MeV/c) S-type 22
23 Time of µ- at monitor33 h5 Underflow Overflow Integral 3 25 Time of µ- at monitor (counts) (counts) Time of µ- at monitor33 h5 Underflow Overflow Integral ToF(ns) C-type 25 3 ToF(ns) S-type 23
24 Time of µ- at monitor33 (counts) Time of µ- at monitor33 h5 Underflow Overflow Integral ToF(ns) C-type 24
25 Total Momentum of π- at monitor33 h2 Underflow Overflow Integral 1.8 Momentum of! - at monitor (counts) (counts) Momentum of! - at monitor33 h2 Underflow Overflow Integral P(MeV/c) C-type P(MeV/c) S-type 25
26 C-type S-type 26
27 C-type S-type 27
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