Richard Catherall AB-ATB-IF

Installation of RFQ into HRS beam line◦ Preliminary tests

HRS slits

Ventilation

REX

Target and ion source development

Shutdown Planning

Staff and support

http://ab-div-op-iso-rfqcb.web.cern.ch/ab-div-op-iso-rfqcb/Installation.htm

Platform◦ Ordered in January, delivered in August!!

HT transport◦ Home made “Boris tube” design by AB-PO

Vacuum installation◦ Reduction in manpower of AT-VAC◦ Access to HRS separator area◦ Creation of a new vacuum sector

Alignment◦ Access and observation

Connector feedthroughs◦ No longer in stock

Electrical power◦ Currently on temporary network

“Unforseen” technicalities◦ Cabling, mechanical, interlocks, dismounting and re-assembly

Erwin Siesling (AB-OP)

Pascal Fernier (AB-OP)

Jerome Helen Sarret (AB-ATB-IF)

Ermanno Barbero (AB-ATB-IF)

Hannah Franberg (AB-OP)

Pierre Delahaye (PH-IS)

Julien Parra-Lopez (AB-PO)

AB-OP, AT-VAC, AB-PO, TS-CV, TS-EL, SC-RP, AB-ATB, PH-IS

Transmission

Space charge limitations seen at (measured with 39K) 2e7 ions/bunch (~ 2 orders of magnitude higher than ordinary RFQC).

The tuning of the beam after the switchyard is much easier than before, COLLAPS measured a very nice low emittance parallel beam coming to their set-up in the end of the CA0.LA3 beam line.

On-line work done by:◦ Pierre Delahaye, Hanna Franberg, Magnus Eriksson, Pascal Fernier, Erwin Siesling and

Ivan Podadera,

Ions On-line Off-line (275)

23Na 50% 27%

39K >75% 60%

85Rb ~80% n/a

Reminder:◦ Orphan equipment◦ Had to be used manually◦ No reference position

Refurbished:◦ Revised conception and

mechanical parts◦ Plc driven via touch screen in

control room◦ Configuration calibration and

set up calibration◦ Fast in/out, gap width

adjustment, offset◦ User friendly visual display

interface◦ Accurate to 5µm, hysteresis of

50µm.◦ Full documentation

Thanks to Pekka Suominen and Erik Asen

Air activation levels over 3 years as measured in chimney

0.00E+00

5.00E+02

1.00E+03

1.50E+03

2.00E+03

2.50E+03

April to December

ch

imn

ey

mo

nit

or

kB

q/m

3

2007 2006 2005

GPS - AIMANTS

W1 116EXTRACTION AIMANTS

W1 117

EXTRACTION LABORATOIRE

V1 221

Extraction cibles

W1 115

Extraction tunnel

Q = 30000 m3/h

V = 7800 m3

DEBIT MESURE GV : 25972 m3/h

DEBIT MESURE PV : 18605 m3/h

air extrait des radioactives

Station extraction air contaminé

G

DESHUMIDIFICATION

CIBLESHRS GPS

Evacuation

pompe à vide

Qe=5m3/h

HOTTE

Qe=1100 m3/h

VUE AA

Qe=550 m3/h

HOTTE HOTTE

Qe=7500 - 10000m3/h

Qem= - m3/h

Porte Tunnel cibles

60 / 150 m3/h

VERS PRODUCTION EAU GLACEESTATION ST1 130

F1 93

LOCAL R-401

Dp/couloir : 50 Pa

LOCAL R-005

Dp/couloir : 50 Pa

LOCAL R-001

Dp/couloir : 100 Pa

clapet de

régulation

Qp=0-440m3/h

clapet coupe

feu

amortisseur

de bruit

CV1 192

pulsion locaux acces

Qp=6000m3/h

Pt = 800 paamortisseur

de bruit

Qp=0-1100m3/hQe=440m3/h

clapet de

réglage

clapet coupe

feu

LOCAL R-003

Dp/couloir : 100 Pa

caisson de

filtration

caisson de

filtration

Qp=0-550m3/h

clapet coupe

feu

clapet coupe

feu

Qe=350m3/h

A

Qpm=1058 - 3951m3/h

V = 1000 m3

Tr/h : 1.07 - 4

Qp=1071 - 4000m3/h

70

00

-1

00

00 m

3/h

G CIBLES

G G

G

G

2000 m3/hQp=0-350m3/h

20

00

m3/h

Tr/h : 3.85

Gaines et tuyauteries noyées dans le béton

BATIMENT 179 TUNNEL

CA

GG

V = 175 m3

Q = 900 m3/h

HRS - AIMANTS

Q = 300 m3/hTr/h : 5

Hall

ASPIRATION PAR

INETANCHEITE

DES PAROISST1 130

sous station chauffagesalle de contrôle

Batiment d'alimentation

adoucisseur

AC 178sécheur

chimiqueair comprimé

CR 82ES

1058 m3/hTunnel fermé

Hall expérience local HT + tunnel

Tunnel ouvert

DEBIT MESURE : 4677 m3/h

Tr/h : 21.74

Q = 5000 m3/h

V = 230 m3

HT

G

HALL

G G

CA

CA

SANITAIRES

CV1 193

Tmaxi = 40°C

V=160m3

Tr=23.13

Q=3700m3/h

circuit eau chaudebatterie de climatisation

vers caisson

déshumidification

dans tunnel

Tmaxi = 27°C

V=240m3

Tr=45.83

Q=11000m3/h

F1 93

productioneau glaçée

déshumidification

cibles HRS - GPS

EF 200

circuit

radiateur

Tmaxi = 40°C

V=300m3

Tr=24.33

Q=7300m3/h

SR - REDRESSEURS SE

3951 m3/h

mesure de débit

air contaminé

V3 138

EXTRACTION SANITAIRES

CV1 195

Locaux électriques

sous station climatisation

air extrait des

zones climatisées

AIR NEUF

During operation:

•Tunnel ~4000m3/h

•Class A ~5000m3/h

•Separators ~1000m3/h

•Faraday cages 0m3/h

List of actions undertaken at the ISOLDE facility during weeks 21 & 22:

Overall verification of ventilation at ISOLDE > ST-CV◦ Verification of debit at extraction.◦ 10000m3/h in operation mode measured by both SC and ST-CV. This compares to

14000m3/h measured in 2006 and 2005 (but measured with a different anemometer).

◦ Verification of pulsed air. OK, compares to last year

◦ Verification of closed circuit operation (from outside).◦ All hard wired signals found to be OK

Intervention in tunnel:◦ Observation of dehumidification equipment (part of closed circuit).

Seems correct, no panels removed, no new openings◦ Air tightness of faraday cages◦ OK, no compressed air leak◦ Measuring of potential beam loss “hot spots” along BTY beam line.

Nothing greater than 7uS/h background measured◦ Verification of valves and motors of closed circuit

OK◦ Verification of pulsing and extraction in tunnel

OK

Fine tuning of p-beam, monitoring of BLM’s, improvement of irregularities in ring 4.◦ No improvement of situation

Clarification of activity measurements◦ P. Vojtyla (SC-RP) confirms calibration of measuring device using

a fixed source. Calculations account for reduction in extraction debit.

Verification of exhaust gas collection system. ◦ OK

Graphs of air activation◦ Air activation monitored as a function of p-beam intensity. ◦ Measurements compared to those of 2006 and 2005.

Measurements as a function of ventilation debit

Delay between p-beam and gaseous radioactive release (Separator GPS)

0.0E+00

5.0E+04

1.0E+05

1.5E+05

2.0E+05

2.5E+05

14:30 14:44 14:58 15:13 15:27 15:42 15:56 16:10

Time

0

10

20

30

40

50

60

70

80

90

PMIY012 (µSv/h)

PMVG170C (kBq/m3)

4 mn

18mn

Delay between p-beam and gaseous radioactive release (Separator HRS)

0

50

100

150

200

250

300

350

400

16:30 16:58 17:27 17:56 18:25 18:54

0.0E+00

2.0E+06

4.0E+06

6.0E+06

8.0E+06

1.0E+07

1.2E+07

1.4E+07

1.6E+07

1.8E+07

PMVG170C (kBq/m3)

PMIY022 (µSv/h)

7 mn

22mn

Delay between p-beam and gaseous radioactive release

(ISOLDE GPS & HRS)

1.0E+03

1.0E+04

1.0E+05

1.0E+06

1.0E+07

1.0E+08

0:00 0:36 1:12 1:48 2:24 3:00 3:36 4:12 4:48 5:24

Time

0

50

100

150

200

250

300

350

400

PMIY022 (µSv/h)

PMIY012 (µSv/h)

GPS

HRS

PMVG170C (kBq/m3)

PMVG170C (kBq/m3)

2.963.15

2.55

1.5Sv/h

2.2 Sv/hon conv.

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

15:21 15:50 16:19 16:48 17:16 17:45

kB

q/m

3 f

or

CM

S

kB

q/m

3 f

or

ch

imn

ey m

on

ito

r

Time

Activation measurements of the ISOLDE target zone

chimney monitor

ventilation debit

PMIY022

CMS counter in target zone extraction

12-06-07

12-06-07

0

100

200

300

400

500

600

700

800

900

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8

Co

ncen

trati

on

des r

eje

ts g

azeu

x (

kB

q/m

3)

Intensité PSB (µA)

Rejets gazeux, Isolde-MD du 25/05/07 and 08/06/07

25-05-07

25-05-07

Séparateur GPS, cible #347 UC2-C 44 g/cm2

Ventilation

Installation of alarm at CCCActivated at 500kBq/m3 at extraction chimney (corresponds to ~0.7uA)

ST-CV currently working on air flow simulations

Modification of extraction and pulsing of air flow in the tunnel during the shutdown

Replacement of ventilator motor in hall

Highlights and beamstatistics Technical problems

In total 3 new elements (Sr, Ba, Hg) and new 8 isotopes were delivered for physics, coming either as single ions or molecular ions from ISOLDE.

One of the experimental runs could becarried out in spite of a malfunctioningtrap by operating the EBIS in continuousinjection mode. This opens up future possibilities with the RFQ cooler nowinstalled and operational.

The REX-ISOLDE post accelerator has this year also seriously entered the arena of heavy beams by acceleratinglight Hg isotopes to full linac energy.

Molecular sidebands from ISOLDE are not always the solution, e.g. 148BaF contaminated with 148NdF.

Sparking inside the REXTRAP due to deposits on insulators. Has been repaired.

Trap CS stopped working after a patch update of the general Windows environment at CERN. Has been corrected.

Sparking occurs inside the IHS cavityfor power levels higher than 60 kW. To be investigated this shutdown.

The beam tuning of the Linac has not been reproducible since the Minimove, causing occasional poortransmission. Still underinvestigation.

Minimove completed (background level in Ge detectors reallychanged?)

New control system for the REXEBIS (almost finished) and for the beam diagnostics

Closed circuit ventilation in RF room installed 9-gap amplifier now able to operate at full power

Future ideas and development◦ Verify mass selective cooling inside REXTRAP under realistic circumstances

-> ask for a test run◦ Investigate polarised beams◦ Emittance measurements after the linac◦ Hope to test O,C and N (as single ion or molecues) if Minimono gets

operational◦ Test pulsed and continuous beams from the RFQ cooler

Operation◦ Transfer daily operation to the ISOLDE IEC team ◦ Different (longer) setup procedure foreseen next year

Developments:◦ Bi-valve target Successfully tested

◦ Minimono target Failed at beginning of run after initial testing

2008: address design, construct 2 magnetron control interfaces for off-line and on-line use.

◦ SiC Tested successfully for F production

◦ Temperature controlled quartz line Temperature controlled line tested for alkalis but no

Cd seen. Reason due to polluted window in HRS magnet preventing laser ionization

Consolidation of RFQ installation◦ Vacuum, controls, power supplies◦ Removal and replacement??

Water distribution panel (orphan)◦ Separate target cooling from vacuum sequence◦ Support from ST-CV

Tape station◦ Revived project with Strasbourg collaboration◦ Delivery promised for April 2008, end of beamline installation in May 2008

Robot cameras◦ Improve current camera situation

Ventilation◦ Modification of ventilation system in tunnel

Vacuum consolidation ◦ REX, overall vacuum controls

Front end #6◦ Prepare installation of FE6 at HRS

AB-ATB-IF expects to lose 7 persons over the next 12 months. Consequences: target testing program and technical support for projects. 2009 > target production

Most grateful for support from collaboration and PH for UPAS

Concerned about external support from other CERN groups…i.e. vacuum, RP, ST-CV