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Title: SWITCHED REFERENCE PHASE LOCK LOOP (SRPLL).

Abstract

The Brookhaven National Laboratory Relativistic Heavy Ion Collider (RHIC) has two beam synchronous event links (BSL), one for each ring, which use the 28 MHz ring low level rf to distribute event codes synchronously with a precise phase relationship to the beam. During a cogging reset just before injection, the low level rf sine wave is interrupted which causes the BSL receivers to lose lock. Lock loss in turn causes false triggers and other undesirable-effects on the beam position monitors (BPM), ionization profile monitors (IPM), the tune meter and various experiments which use the BSLs. To rectify these problems, a SRPLL has been inserted between the beam synchronous master and the low level rf source. The SRPLL inserts a frequency and phase continuous splice over the dead-band gap in the rf source created during a cogging reset. The splice removes the gap and prevents the distributed BSL receivers from losing lock.

Authors:
Publication Date:
Research Org.:
Brookhaven National Lab., Upton, NY (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
783174
Report Number(s):
BNL-68010; KB020202
R&D Project: AD005HIOP; KB020202; TRN: US0103757
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Conference
Resource Relation:
Conference: PARTICLE ACCELERATOR CONFERENCE 2001, CHICAGO, IL (US), 06/18/2001--06/22/2001; Other Information: PBD: 18 Jun 2001
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BROOKHAVEN RHIC; BEAM POSITION; HEAVY IONS; ION BEAMS; IONIZATION; BEAM MONITORS; BEAM PROFILES; RF SYSTEMS; BEAM INJECTION; FREQUENCY CONTROL

Citation Formats

KERNER,T. SWITCHED REFERENCE PHASE LOCK LOOP (SRPLL).. United States: N. p., 2001. Web.
KERNER,T. SWITCHED REFERENCE PHASE LOCK LOOP (SRPLL).. United States.
KERNER,T. Mon . "SWITCHED REFERENCE PHASE LOCK LOOP (SRPLL).". United States. https://www.osti.gov/servlets/purl/783174.
@article{osti_783174,
title = {SWITCHED REFERENCE PHASE LOCK LOOP (SRPLL).},
author = {KERNER,T.},
abstractNote = {The Brookhaven National Laboratory Relativistic Heavy Ion Collider (RHIC) has two beam synchronous event links (BSL), one for each ring, which use the 28 MHz ring low level rf to distribute event codes synchronously with a precise phase relationship to the beam. During a cogging reset just before injection, the low level rf sine wave is interrupted which causes the BSL receivers to lose lock. Lock loss in turn causes false triggers and other undesirable-effects on the beam position monitors (BPM), ionization profile monitors (IPM), the tune meter and various experiments which use the BSLs. To rectify these problems, a SRPLL has been inserted between the beam synchronous master and the low level rf source. The SRPLL inserts a frequency and phase continuous splice over the dead-band gap in the rf source created during a cogging reset. The splice removes the gap and prevents the distributed BSL receivers from losing lock.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {6}
}

Conference:
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