AN IMPROVED LIQUID HYDROGEN DIFFERENTIAL CERENKOV COUNTER

被引：4

作者：

AYRES, DS

CORMACK, AM

GREENBERG, AJ

KENNEY, RW

MCLAUGHLIN, EF

SCHAFER, RV

CALDWELL, DO

ELINGS, VB

HESSE, WP

MORRISON, RJ

机构：

[1] Lawrence Radiation Laboratory, University of California, Berkeley, CA

[2] Physics Department, University of California, Santa Barbara, CA

来源：

NUCLEAR INSTRUMENTS & METHODS | 1969年 / 70卷 / 01期

关键词：

D O I：

10.1016/0029-554X(69)90172-4

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A liquid hydrogen differential Čerenkov counter was developed to detect 0.3-GeV/c (β=0.92) pions for comparing π+and π- lifetimes in a check of CPT invariance. This type of counter, previously reported, has now been improved considerably so that it gives no counts when empty, remains clean with no window fogging, and has a very stable index of refraction. Two similar counters were constructed with 4″ and 7″ dia. apertures, and both could be used with either liquid hydrogen or liquid deuterium as the radiating medium. Each counter cleanly separated pions and muons of the same momentum, with a rejection of better than 104. © 1969.

引用

页码：13 / +

页数：1

共 6 条

[1] PRECISE COMPARISON OF PI+ AND PI- LIFETIMES [J].

AYRES, DS ;

CORMACK, AM ;

GREENBERG, AJ ;

KENNEY, RW ;

CALDWELL, DO ;

ELINGS, VB ;

HESSE, WP ;

MORRISON, RJ .

PHYSICAL REVIEW LETTERS, 1968, 21 (04) :261-+

[2] PION-ANTIPION LIFETIME COMPARISON [J].

AYRES, DS ;

CALDWELL, DO ;

GREENBERG, AJ ;

KENNEY, RW ;

KURZ, RJ ;

STEARNS, BF .

PHYSICS LETTERS B, 1967, B 24 (09) :483-+

[3] COMPARISON OF PI+ AND PI-LIFETIMES [J].

AYRES, DS ;

CALDWELL, DO ;

GREENBERG, AJ ;

KENNEY, RW ;

KURZ, RJ ;

STEARNS, BF .

PHYSICAL REVIEW, 1967, 157 (05) :1288-+

[4]

AYRES DS, 1968, UCRL18369 REP

[5] HIGH RESOLUTION FOCUSING CERENKOV DETECTOR FOR HIGH ENERGY PARTICLES [J].

HILL, DA ;

CALDWELL, DO ;

SCHLUTER, RA ;

OSBORNE, LS ;

FRISCH, DH ;

RITSON, DM .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1961, 32 (02) :111-&

[6]

KENNEY RW, 1966, 1966 P INT C INSTR H, P201

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