Precise momentum determination of the external COSY proton beam near 1930 MeV/c

被引：5

作者：

Betigeri, MG

Bojowald, J

Budzanowski, A

Chatterjee, A

Drochner, M

Ernst, J

Förtsch, S

Freindl, L

Frekers, D

Garske, W

Grewer, K

Hamacher, A

Hawash, M

Igel, S

Ilieva, I

Jahn, R

Jarczyk, L

Kemmerling, G

Kilian, K

Kliczewski, S

Klimala, W

Kolev, D

Kutsarova, T

Lieb, BJ

Lippert, G

Machner, H ^{[1
]}

Magiera, A

Maier, R

Nann, H

Plendl, HS

Protic, D

Razen, B

von Rossen, P

Roy, B

Siudak, R

Smyrski, J

Strzalkowski, A

Tsenov, R

Zolnierczuk, PA

Zwoll, K

机构：

[1] BARC, Div Nucl Phys, Bombay, Maharashtra, India

[2] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany

[3] Inst Nucl Phys, Krakow, Poland

[4] Forschungszentrum Julich, Zent Lab Elekt, Julich, Germany

[5] Univ Bonn, Inst Strahlen & Kernphys, D-5300 Bonn, Germany

[6] Natl Accelerator Ctr, ZA-7131 Faure, South Africa

[7] Univ Munster, Inst Kernphys, D-4400 Munster, Germany

[8] Inst Nucl Phys & Nucl Energy, Sofia, Bulgaria

[9] Jagiellonian Univ, Inst Phys, Krakow, Poland

[10] Univ Sofia, Fac Phys, BU-1126 Sofia, Bulgaria

[11] GMU Univ, Dept Phys & Astron, Fairfax, VA USA

[12] IUCF, Bloomington, IN USA

[13] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1999年 / 426卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

proton beam; pions; deuterons; 1930 MeV c;

D O I：

10.1016/S0168-9002(99)00014-5

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We present a method to determine precisely the absolute momentum of the external proton beam from the Julich Cooler Synchrotron COSY near 1930 MeV/c. In the pp --> d pi(+) reaction at 1930.477 MeV/c incident beam momentum, the forward going pions (theta(c.m.) = 0 degrees) and the backward going deuterons (theta(c.m.) = 180 degrees) have the same laboratory momentum. Such coincident pion-deuteron events are detected in the focal plane of the magnetic spectrometer BIG KARL located at theta(lab) = 0 degrees. Using the nearly linear dependence of the difference between the measured pion and deuteron momenta as a function of the proton beam momentum, the absolute momentum of the external proton beam from COSY near 1930 MeV/c was determined with a precision of 5.2 x 10(-5). (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：249 / 253

页数：5

共 6 条

[1] The p+p→π++d reaction close to threshold at COSY [J].

Drochner, M ;

Ernst, J ;

Fortsch, S ;

Freindl, L ;

Frekers, D ;

Garske, W ;

Grewer, K ;

Igel, S ;

Jahn, R ;

Jarczyk, L ;

Kemmerling, G ;

Kilian, K ;

Kliczewski, S ;

Klimala, W ;

Kolev, D ;

Kutsarova, T ;

Lippert, G ;

Machner, H ;

Maier, R ;

Nake, C ;

Razen, B ;

von Rossen, P ;

Roy, BR ;

Scho, K ;

Siudak, R ;

Smyrski, J ;

Strzalkowski, A ;

Tsenov, R ;

Zolnierczuk, PA ;

Zwoll, K .

NUCLEAR PHYSICS A, 1998, 643 (01) :55-82

[2] A LIQUID-HYDROGEN DEUTERIUM TARGET WITH VERY THIN WINDOWS [J].

JAECKLE, V ;

KILIAN, K ;

MACHNER, H ;

NAKE, C ;

OELERT, W ;

TUREK, P .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 349 (01) :15-17

[3] THE QQDDQ MAGNET SPECTROMETER BIG KARL [J].

MARTIN, SA ;

HARDT, A ;

MEISSBURGER, J ;

BERG, GPA ;

HACKER, U ;

HURLIMANN, W ;

ROMER, JGM ;

SAGEFKA, T ;

RETZ, A ;

SCHULT, OWB ;

BROWN, KL ;

HALBACH, K .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, 1983, 214 (2-3) :281-303

[4] THE ETA-MESON MASS [J].

PLOUIN, F ;

FLEURY, P ;

BACHELIER, D ;

BEURTEY, R ;

BOIVIN, M ;

BOUDARD, A ;

BOYARD, JL ;

BRISCOE, W ;

HENNINO, T ;

KESSLER, R ;

MAYER, B ;

MILLERET, G ;

MOALEM, A ;

NAKACH, A ;

NEFKENS, BMK ;

PILLAI, C ;

WHITTEN, C ;

WILKIN, C .

PHYSICS LETTERS B, 1992, 276 (04) :526-530

[5]

RAZEN B, 1998, THESIS U BONN GERMAN

[6]

ZOLNIERCZUK P, 1996, THESIS U CRACOW POLA

← 1 →